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Showing 201 - 300 of 466 results

The Eighteenth Annual Salzberg Memorial Lecture: An Address by Alan S. Boyd, Under Secretary of Commerce for Transportation

Boyd, Alan S.

1966-11-07 | Boyd, Alan S. | PDF

"Transportation in an Evolving Context" was an address by Alan S. Boyd, Under Secretary of Commerce for Transportation, prepared for delivery at the Syracuse Transportation Conference at Syracuse University on November 7, 1966. Boyd's address was the Eighteen Annual Salzberg Memorial Lecture.

12/05/2025

Title : The Eighteenth Annual Salzberg Memorial Lecture: An Address by Alan S. Boyd, Under Secretary of Commerce for Transportation Creator(s) : Boyd, Alan S. Corporate Creator(s) : United States. Department of Commerce Published Date : 1966-11-07 Series : Boyd, Alan S. DOI : https://doi.org/10.21949/yp4n-p889 Boyd, Alan S. (1966). The Eighteenth Annual Salzberg Memorial Lecture: An Address by Alan S. Boyd, Under Secretary of Commerce for Transportation. https://doi.org/10.21949/yp4n-p889 Boyd, Alan S. "The Eighteenth Annual Salzberg Memorial Lecture: An Address by Alan S. Boyd, Under Secretary of Commerce for Transportation" (1966), https://doi.org/10.21949/yp4n-p889 Boyd, Alan S. "The Eighteenth Annual Salzberg Memorial Lecture: An Address by Alan S. Boyd, Under Secretary of Commerce for Transportation" , 1966, https://doi.org/10.21949/yp4n-p889 Export RIS Citation Information. TY - Speeches AU - Boyd, Alan S. A2 - United States. Department of Commerce AB - "Transportation in an Evolving Context" was an address by Alan S. Boyd, Under Secretary of Commerce for Transportation, prepared for delivery at the Syracuse Transportation Conference at Syracuse University on November 7, 1966. Boyd's address was the Eighteen Annual Salzberg Memorial Lecture. AN - dot:88036 DO - https://doi.org/10.21949/yp4n-p889 KW - Economic and social factors KW - Domestic transportation KW - Transportation planning KW - Federal government agencies LA - English PB - United States. Department of Commerce PY - 1966-11-07 T2 - Boyd, Alan S. TI - The Eighteenth Annual Salzberg Memorial Lecture: An Address by Alan S. Boyd, Under Secretary of Commerce for Transportation M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88036 ER -
Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Federal Procurement and Regulation of the Joint Economic Committee

Boyd, Alan S.

1966-05-19 | Boyd, Alan S. | PDF

Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Federal Procurement and Regulation of the Joint Economic Committee on May 19, 1966.

12/05/2025

Title : Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Federal Procurement and Regulation of the Joint Economic Committee Creator(s) : Boyd, Alan S. Corporate Creator(s) : United States. Department of Commerce Published Date : 1966-05-19 Series : Boyd, Alan S. DOI : https://doi.org/10.21949/pegz-at20 Boyd, Alan S. (1966). Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Federal Procurement and Regulation of the Joint Economic Committee. https://doi.org/10.21949/pegz-at20 Boyd, Alan S. "Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Federal Procurement and Regulation of the Joint Economic Committee" (1966), https://doi.org/10.21949/pegz-at20 Boyd, Alan S. "Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Federal Procurement and Regulation of the Joint Economic Committee" , 1966, https://doi.org/10.21949/pegz-at20 Export RIS Citation Information. TY - Speeches AU - Boyd, Alan S. A2 - United States. Department of Commerce AB - Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Federal Procurement and Regulation of the Joint Economic Committee on May 19, 1966. AN - dot:88035 DO - https://doi.org/10.21949/pegz-at20 KW - Water transportation KW - Economic factors KW - International trade KW - International transportation KW - Shipping KW - Costs LA - English PB - United States. Department of Commerce PY - 1966-05-19 T2 - Boyd, Alan S. TI - Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Federal Procurement and Regulation of the Joint Economic Committee M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88035 ER -
Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, on S. 3197 and S. 3198

Boyd, Alan S.

1966-05-13 | Boyd, Alan S. | PDF

Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, on S. 3197 and S. 3198, bills to amend the Federal Aviation Act of 1958, on May 13, 1966.

12/05/2025

Title : Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, on S. 3197 and S. 3198 Creator(s) : Boyd, Alan S. Corporate Creator(s) : United States. Department of Commerce Published Date : 1966-05-13 Series : Boyd, Alan S. DOI : https://doi.org/10.21949/jkfh-m850 Boyd, Alan S. (1966). Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, on S. 3197 and S. 3198. https://doi.org/10.21949/jkfh-m850 Boyd, Alan S. "Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, on S. 3197 and S. 3198" (1966), https://doi.org/10.21949/jkfh-m850 Boyd, Alan S. "Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, on S. 3197 and S. 3198" , 1966, https://doi.org/10.21949/jkfh-m850 Export RIS Citation Information. TY - Speeches AU - Boyd, Alan S. A2 - United States. Department of Commerce AB - Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, on S. 3197 and S. 3198, bills to amend the Federal Aviation Act of 1958, on May 13, 1966. AN - dot:88034 DO - https://doi.org/10.21949/jkfh-m850 KW - Legislation KW - Aviation KW - Airlines KW - International transportation KW - International trade KW - Permits LA - English PB - United States. Department of Commerce PY - 1966-05-13 T2 - Boyd, Alan S. TI - Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, on S. 3197 and S. 3198 M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88034 ER -
Statement by Alan S. Boyd, Under Secretary for Transportation, Department of Commerce, before the Subcommittee on Roads of the Committee of Public Works, United States Senate

Boyd, Alan S.

1966-05-11 | Boyd, Alan S. | PDF

Statement by Alan S. Boyd, Under Secretary for Transportation, Department of Commerce, before the Subcommittee on Roads of the Committee of Public Works, United States Senate on May 11, 1966.

12/05/2025

Title : Statement by Alan S. Boyd, Under Secretary for Transportation, Department of Commerce, before the Subcommittee on Roads of the Committee of Public Works, United States Senate Creator(s) : Boyd, Alan S. Corporate Creator(s) : United States. Department of Commerce Published Date : 1966-05-11 Series : Boyd, Alan S. DOI : https://doi.org/10.21949/x1k7-mf24 Boyd, Alan S. (1966). Statement by Alan S. Boyd, Under Secretary for Transportation, Department of Commerce, before the Subcommittee on Roads of the Committee of Public Works, United States Senate. https://doi.org/10.21949/x1k7-mf24 Boyd, Alan S. "Statement by Alan S. Boyd, Under Secretary for Transportation, Department of Commerce, before the Subcommittee on Roads of the Committee of Public Works, United States Senate" (1966), https://doi.org/10.21949/x1k7-mf24 Boyd, Alan S. "Statement by Alan S. Boyd, Under Secretary for Transportation, Department of Commerce, before the Subcommittee on Roads of the Committee of Public Works, United States Senate" , 1966, https://doi.org/10.21949/x1k7-mf24 Export RIS Citation Information. TY - Speeches AU - Boyd, Alan S. A2 - United States. Department of Commerce AB - Statement by Alan S. Boyd, Under Secretary for Transportation, Department of Commerce, before the Subcommittee on Roads of the Committee of Public Works, United States Senate on May 11, 1966. AN - dot:88033 DO - https://doi.org/10.21949/x1k7-mf24 KW - Laws and legislation KW - Highway transportation KW - Interstate highways KW - Economic and social factors KW - Transportation planning LA - English PB - United States. Department of Commerce PY - 1966-05-11 T2 - Boyd, Alan S. TI - Statement by Alan S. Boyd, Under Secretary for Transportation, Department of Commerce, before the Subcommittee on Roads of the Committee of Public Works, United States Senate M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88033 ER -
Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, May 3, 1966

Boyd, Alan S.

1966-05-03 | Boyd, Alan S. | PDF

Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate on May 3, 1966.

12/05/2025

Title : Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, May 3, 1966 Creator(s) : Boyd, Alan S. Corporate Creator(s) : United States. Department of Commerce Published Date : 1966-05-03 Series : Boyd, Alan S. DOI : https://doi.org/10.21949/nffy-7e40 Boyd, Alan S. (1966). Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, May 3, 1966. https://doi.org/10.21949/nffy-7e40 Boyd, Alan S. "Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, May 3, 1966" (1966), https://doi.org/10.21949/nffy-7e40 Boyd, Alan S. "Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, May 3, 1966" , 1966, https://doi.org/10.21949/nffy-7e40 Export RIS Citation Information. TY - Speeches AU - Boyd, Alan S. A2 - United States. Department of Commerce AB - Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate on May 3, 1966. AN - dot:88032 DO - https://doi.org/10.21949/nffy-7e40 KW - Laws and legislation KW - Airports KW - Aviation KW - Airport planning KW - Appropriations KW - Airport capacity KW - Air transportation LA - English PB - United States. Department of Commerce PY - 1966-05-03 T2 - Boyd, Alan S. TI - Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, May 3, 1966 M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88032 ER -
Statement by Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Special Subcommittee on Federal-Aid Highway Programs

Boyd, Alan S.

1966-06-23 | Boyd, Alan S. | PDF

Statement by Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Special Subcommittee on Federal-Aid Highway Programs on June 23, 1966.

12/05/2025

Title : Statement by Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Special Subcommittee on Federal-Aid Highway Programs Creator(s) : Boyd, Alan S. Corporate Creator(s) : United States. Department of Commerce Published Date : 1966-06-23 Series : Boyd, Alan S. DOI : https://doi.org/10.21949/9hw4-2r58 Boyd, Alan S. (1966). Statement by Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Special Subcommittee on Federal-Aid Highway Programs. https://doi.org/10.21949/9hw4-2r58 Boyd, Alan S. "Statement by Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Special Subcommittee on Federal-Aid Highway Programs" (1966), https://doi.org/10.21949/9hw4-2r58 Boyd, Alan S. "Statement by Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Special Subcommittee on Federal-Aid Highway Programs" , 1966, https://doi.org/10.21949/9hw4-2r58 Export RIS Citation Information. TY - Speeches AU - Boyd, Alan S. A2 - United States. Department of Commerce AB - Statement by Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Special Subcommittee on Federal-Aid Highway Programs on June 23, 1966. AN - dot:88031 DO - https://doi.org/10.21949/9hw4-2r58 KW - Toll roads KW - Transportation policy KW - Highway facilities KW - Highways KW - Government funding LA - English PB - United States. Department of Commerce PY - 1966-06-23 T2 - Boyd, Alan S. TI - Statement by Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Special Subcommittee on Federal-Aid Highway Programs M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88031 ER -
Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, February 28, 1966

Boyd, Alan S.

1966-02-28 | Boyd, Alan S. | PDF

Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, on February 28, 1966.

12/05/2025

Title : Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, February 28, 1966 Creator(s) : Boyd, Alan S. Corporate Creator(s) : United States. Department of Commerce Published Date : 1966-02-28 Series : Boyd, Alan S. DOI : https://doi.org/10.21949/hxmv-dx93 Boyd, Alan S. (1966). Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, February 28, 1966. https://doi.org/10.21949/hxmv-dx93 Boyd, Alan S. "Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, February 28, 1966" (1966), https://doi.org/10.21949/hxmv-dx93 Boyd, Alan S. "Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, February 28, 1966" , 1966, https://doi.org/10.21949/hxmv-dx93 Export RIS Citation Information. TY - Speeches AU - Boyd, Alan S. A2 - United States. Department of Commerce AB - Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, on February 28, 1966. AN - dot:88030 DO - https://doi.org/10.21949/hxmv-dx93 KW - Local service airlines KW - Passenger transportation KW - Passenger aircraft KW - Air travel LA - English PB - United States. Department of Commerce PY - 1966-02-28 T2 - Boyd, Alan S. TI - Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Aviation Subcommittee of the Committee on Commerce, United States Senate, February 28, 1966 M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88030 ER -
Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, to Safety Associations' Representatives

Boyd, Alan S.

1966-12-06 | Boyd, Alan S. | PDF

Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, to Safety Associations' Representatives on December 6, 1966.

12/05/2025

Title : Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, to Safety Associations' Representatives Creator(s) : Boyd, Alan S. Corporate Creator(s) : United States. Department of Commerce Published Date : 1966-12-06 Series : Boyd, Alan S. DOI : https://doi.org/10.21949/mb7a-ek93 Boyd, Alan S. (1966). Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, to Safety Associations' Representatives. https://doi.org/10.21949/mb7a-ek93 Boyd, Alan S. "Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, to Safety Associations' Representatives" (1966), https://doi.org/10.21949/mb7a-ek93 Boyd, Alan S. "Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, to Safety Associations' Representatives" , 1966, https://doi.org/10.21949/mb7a-ek93 Export RIS Citation Information. TY - Speeches AU - Boyd, Alan S. A2 - United States. Department of Commerce AB - Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, to Safety Associations' Representatives on December 6, 1966. AN - dot:88029 DO - https://doi.org/10.21949/mb7a-ek93 KW - Highway safety KW - Highway safety organizations KW - Vehicle safety KW - Safety programs KW - Laws and legislation LA - English PB - United States. Department of Commerce PY - 1966-12-06 T2 - Boyd, Alan S. TI - Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, to Safety Associations' Representatives M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88029 ER -
Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Senate Post Office and Civil Service Committee

Boyd, Alan S.

1966-08-03 | Boyd, Alan S. | PDF

Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Senate Post Office and Civil Service Committee on H.R. 14904 on August 3, 1966.

12/05/2025

Title : Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Senate Post Office and Civil Service Committee Creator(s) : Boyd, Alan S. Corporate Creator(s) : United States. Department of Commerce Published Date : 1966-08-03 Series : Boyd, Alan S. DOI : https://doi.org/10.21949/fcre-rh40 Boyd, Alan S. (1966). Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Senate Post Office and Civil Service Committee. https://doi.org/10.21949/fcre-rh40 Boyd, Alan S. "Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Senate Post Office and Civil Service Committee" (1966), https://doi.org/10.21949/fcre-rh40 Boyd, Alan S. "Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Senate Post Office and Civil Service Committee" , 1966, https://doi.org/10.21949/fcre-rh40 Export RIS Citation Information. TY - Speeches AU - Boyd, Alan S. A2 - United States. Department of Commerce AB - Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Senate Post Office and Civil Service Committee on H.R. 14904 on August 3, 1966. AN - dot:88028 DO - https://doi.org/10.21949/fcre-rh40 KW - Size and weight regulations KW - Package and mail service KW - Postal service KW - Congressional hearings LA - English PB - United States. Department of Commerce PY - 1966-08-03 T2 - Boyd, Alan S. TI - Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Senate Post Office and Civil Service Committee M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88028 ER -
Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, on 50% U.S. Flag Requirement on Shipments of Wheat to Soviet Bloc Countries

Boyd, Alan S.

1965-09-17 | Boyd, Alan S. | PDF

Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, on 50% U.S. Flag requirement on shipments of wheat to Soviet Bloc countries, before the Senate Foreign Relations Committee on September 17, 1965.

12/05/2025

Title : Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, on 50% U.S. Flag Requirement on Shipments of Wheat to Soviet Bloc Countries Creator(s) : Boyd, Alan S. Corporate Creator(s) : United States. Department of Commerce Published Date : 1965-09-17 Series : Boyd, Alan S. DOI : https://doi.org/10.21949/fghy-7b06 Boyd, Alan S. (1965). Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, on 50% U.S. Flag Requirement on Shipments of Wheat to Soviet Bloc Countries. https://doi.org/10.21949/fghy-7b06 Boyd, Alan S. "Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, on 50% U.S. Flag Requirement on Shipments of Wheat to Soviet Bloc Countries" (1965), https://doi.org/10.21949/fghy-7b06 Boyd, Alan S. "Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, on 50% U.S. Flag Requirement on Shipments of Wheat to Soviet Bloc Countries" , 1965, https://doi.org/10.21949/fghy-7b06 Export RIS Citation Information. TY - Speeches AU - Boyd, Alan S. A2 - United States. Department of Commerce AB - Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, on 50% U.S. Flag requirement on shipments of wheat to Soviet Bloc countries, before the Senate Foreign Relations Committee on September 17, 1965. AN - dot:88027 DO - https://doi.org/10.21949/fghy-7b06 KW - International trade KW - Congressional hearings KW - Transportation policy KW - Exports KW - Licenses KW - Agricultural products KW - Grain KW - Shipping LA - English PB - United States. Department of Commerce PY - 1965-09-17 T2 - Boyd, Alan S. TI - Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, on 50% U.S. Flag Requirement on Shipments of Wheat to Soviet Bloc Countries M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88027 ER -
Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Commerce, United States Senate, on Hearings Regarding Public Law 88-108

Boyd, Alan S.

1965-09-15 | Boyd, Alan S. | PDF

Statement of the Honorable Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Commerce, United States Senate, on hearings regarding Public Law 88-108 and Award of Arbitration on Board 282 on September 15, 1965.

12/05/2025

Title : Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Commerce, United States Senate, on Hearings Regarding Public Law 88-108 Creator(s) : Boyd, Alan S. Corporate Creator(s) : United States. Department of Commerce Published Date : 1965-09-15 Series : Boyd, Alan S. DOI : https://doi.org/10.21949/afd6-x423 Boyd, Alan S. (1965). Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Commerce, United States Senate, on Hearings Regarding Public Law 88-108. https://doi.org/10.21949/afd6-x423 Boyd, Alan S. "Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Commerce, United States Senate, on Hearings Regarding Public Law 88-108" (1965), https://doi.org/10.21949/afd6-x423 Boyd, Alan S. "Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Commerce, United States Senate, on Hearings Regarding Public Law 88-108" , 1965, https://doi.org/10.21949/afd6-x423 Export RIS Citation Information. TY - Speeches AU - Boyd, Alan S. A2 - United States. Department of Commerce AB - Statement of the Honorable Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Commerce, United States Senate, on hearings regarding Public Law 88-108 and Award of Arbitration on Board 282 on September 15, 1965. AN - dot:88026 DO - https://doi.org/10.21949/afd6-x423 KW - Congressional hearings KW - Transportation planning KW - Railroads KW - Laws KW - Policy, legislation and regulation LA - English PB - United States. Department of Commerce PY - 1965-09-15 T2 - Boyd, Alan S. TI - Statement of Alan S. Boyd, Under Secretary of Commerce for Transportation, before the Committee on Commerce, United States Senate, on Hearings Regarding Public Law 88-108 M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88026 ER -
Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, Prepared for Delivery before Meeting of the National Freight Traffic Association

Boyd, Alan S.

1965-10-25 | Boyd, Alan S. | PDF

Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, prepared for delivery before meeting of the National Freight Traffic Association at the Boca Raton Hotel in Boca Raton, Florida on October 25, 1965.

12/05/2025

Title : Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, Prepared for Delivery before Meeting of the National Freight Traffic Association Creator(s) : Boyd, Alan S. Corporate Creator(s) : United States. Department of Commerce Published Date : 1965-10-25 Series : Boyd, Alan S. DOI : https://doi.org/10.21949/13ca-hp96 Boyd, Alan S. (1965). Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, Prepared for Delivery before Meeting of the National Freight Traffic Association. https://doi.org/10.21949/13ca-hp96 Boyd, Alan S. "Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, Prepared for Delivery before Meeting of the National Freight Traffic Association" (1965), https://doi.org/10.21949/13ca-hp96 Boyd, Alan S. "Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, Prepared for Delivery before Meeting of the National Freight Traffic Association" , 1965, https://doi.org/10.21949/13ca-hp96 Export RIS Citation Information. TY - Speeches AU - Boyd, Alan S. A2 - United States. Department of Commerce AB - Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, prepared for delivery before meeting of the National Freight Traffic Association at the Boca Raton Hotel in Boca Raton, Florida on October 25, 1965. AN - dot:88025 DO - https://doi.org/10.21949/13ca-hp96 KW - Freight traffic KW - Transportation planning KW - Transportation policy KW - Regulations KW - Deregulation LA - English PB - United States. Department of Commerce PY - 1965-10-25 T2 - Boyd, Alan S. TI - Remarks by Alan S. Boyd, Under Secretary of Commerce for Transportation, Prepared for Delivery before Meeting of the National Freight Traffic Association M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88025 ER -
Statement of Karl S. Bowers, Deputy Federal Highway Administrator, before the Subcommittee on Oversight, House Committee on Ways and Means

Bowers, Karl S.

1977-11-30 | PDF

Statement of Karl S. Bowers, Deputy Federal Highway Administrator, before the Subcommittee on Oversight, House Committee on Ways and Means on November 30, 1977.

12/05/2025

Title : Statement of Karl S. Bowers, Deputy Federal Highway Administrator, before the Subcommittee on Oversight, House Committee on Ways and Means Creator(s) : Bowers, Karl S. Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Published Date : 1977-11-30 DOI : https://doi.org/10.21949/jwqt-4b98 Bowers, Karl S. (1977). Statement of Karl S. Bowers, Deputy Federal Highway Administrator, before the Subcommittee on Oversight, House Committee on Ways and Means. https://doi.org/10.21949/jwqt-4b98 Bowers, Karl S. "Statement of Karl S. Bowers, Deputy Federal Highway Administrator, before the Subcommittee on Oversight, House Committee on Ways and Means" (1977), https://doi.org/10.21949/jwqt-4b98 Bowers, Karl S. "Statement of Karl S. Bowers, Deputy Federal Highway Administrator, before the Subcommittee on Oversight, House Committee on Ways and Means" , 1977, https://doi.org/10.21949/jwqt-4b98 Export RIS Citation Information. TY - Speeches AU - Bowers, Karl S. A2 - United States. Department of Transportation. Federal Highway Administration AB - Statement of Karl S. Bowers, Deputy Federal Highway Administrator, before the Subcommittee on Oversight, House Committee on Ways and Means on November 30, 1977. AN - dot:88024 DO - https://doi.org/10.21949/jwqt-4b98 KW - Trucks KW - Trucks by weight KW - Vehicle size KW - Laws KW - Load limits KW - Highways LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 1977-11-30 TI - Statement of Karl S. Bowers, Deputy Federal Highway Administrator, before the Subcommittee on Oversight, House Committee on Ways and Means M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88024 ER -
Perspectives: Prepared Remarks for Carolyn Blum

Blum, Carolyn

1994-06-28 | PDF

Perspectives: Prepared Remarks for Carolyn Blum for the Technical Women's Organization, Cape Cod, Massachusetts on June 28, 1994.

12/05/2025

Title : Perspectives: Prepared Remarks for Carolyn Blum Creator(s) : Blum, Carolyn Corporate Creator(s) : United States. Department of Transportation Published Date : 1994-06-28 DOI : https://doi.org/10.21949/amf2-zc85 Blum, Carolyn (1994). Perspectives: Prepared Remarks for Carolyn Blum. https://doi.org/10.21949/amf2-zc85 Blum, Carolyn "Perspectives: Prepared Remarks for Carolyn Blum" (1994), https://doi.org/10.21949/amf2-zc85 Blum, Carolyn "Perspectives: Prepared Remarks for Carolyn Blum" , 1994, https://doi.org/10.21949/amf2-zc85 Export RIS Citation Information. TY - Speeches AU - Blum, Carolyn A2 - United States. Department of Transportation AB - Perspectives: Prepared Remarks for Carolyn Blum for the Technical Women's Organization, Cape Cod, Massachusetts on June 28, 1994. AN - dot:88023 DO - https://doi.org/10.21949/amf2-zc85 KW - Aviation KW - Air traffic control KW - Federal government KW - Management and organization KW - Personnel management KW - Families LA - English PB - United States. Department of Transportation PY - 1994-06-28 TI - Perspectives: Prepared Remarks for Carolyn Blum M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88023 ER -
Special Crash Investigations: On-Site Rollover System Crash Investigation; Vehicle: 2019 Subaru Outback Limited; Location: North Carolina; Crash Date: November 2022

Crash Research & Analysis, Inc

2025-12-01 | PDF

This Special Crash Investigations report documents the on-site investigation of the rollover crash of a 2019 Subaru Outback Limited in North Carolina in November 2022 driven by a belted 34-year-old female with a belted 70-year-old female front passenger. The Subaru crossed into the oncoming lane, traveling more than half a mile before veering off t ...

12/05/2025

Title : Special Crash Investigations: On-Site Rollover System Crash Investigation; Vehicle: 2019 Subaru Outback Limited; Location: North Carolina; Crash Date: November 2022 Corporate Creator(s) : Crash Research & Analysis, Inc Corporate Contributor(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 2025-12-01 Report Number : DOT HS 813 715 DOI : https://doi.org/10.21949/0d3r-0d76 Crash Research & Analysis, Inc (2025). Special Crash Investigations: On-Site Rollover System Crash Investigation; Vehicle: 2019 Subaru Outback Limited; Location: North Carolina; Crash Date: November 2022. https://doi.org/10.21949/0d3r-0d76 Crash Research & Analysis, Inc "Special Crash Investigations: On-Site Rollover System Crash Investigation; Vehicle: 2019 Subaru Outback Limited; Location: North Carolina; Crash Date: November 2022" (2025), https://doi.org/10.21949/0d3r-0d76 Crash Research & Analysis, Inc "Special Crash Investigations: On-Site Rollover System Crash Investigation; Vehicle: 2019 Subaru Outback Limited; Location: North Carolina; Crash Date: November 2022" , 2025, https://doi.org/10.21949/0d3r-0d76 Export RIS Citation Information. TY - Tech Report A2 - Crash Research & Analysis, Inc A3 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - This Special Crash Investigations report documents the on-site investigation of the rollover crash of a 2019 Subaru Outback Limited in North Carolina in November 2022 driven by a belted 34-year-old female with a belted 70-year-old female front passenger. The Subaru crossed into the oncoming lane, traveling more than half a mile before veering off the road, striking a large tree, a lamppost and another large tree, then rolling over. The driver sustained police-reported non-incapacitating (B-level) injuries [and] was hospitalized for a day. The front passenger sustained police-reported incapacitating (A-level) injuries and was hospitalized for 8 days. AN - dot:88022 DO - https://doi.org/10.21949/0d3r-0d76 KW - Rollover crashes KW - Crash investigation KW - On the scene crash investigation KW - Crash analysis LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis PY - 2025-12-01 SN - DOT HS 813 715 TI - Special Crash Investigations: On-Site Rollover System Crash Investigation; Vehicle: 2019 Subaru Outback Limited; Location: North Carolina; Crash Date: November 2022 M3 - Tech Report N1 - United States N1 - 693JJ919C000004 UR - https://rosap.ntl.bts.gov/view/dot/88022 ER -
Wildlife-Vehicle Collision Reduction Study: Report to Congress

Huijser, M.P.

;

McGowan, Patrick

2008-08-01 | PDF

Under the SAFETEA-LU Congressional Bill, the Secretary of Transportation was directed to conduct a national wildlife-vehicle collision (WVC) reduction study. The study was to advance the understanding of the causes and impacts of WVCs and identify solutions to this growing safety problem. This report contains the findings of this study, beginning w ...

12/01/2025

Title : Wildlife-Vehicle Collision Reduction Study: Report to Congress Creator(s) : Huijser, M.P.;McGowan, Patrick;Fuller, J.;Hardy, A.;Kociolek, Angela V.;Clevenger, A. P.;Smith, D.;Ament, R.; Corporate Creator(s) : Montana State University. Western Transportation Institute;Louis Berger, Inc.; Corporate Contributor(s) : United States. Federal Highway Administration. Office of Safety Research and Development;United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center; Contributor(s) : Durbin, Dennis R.;Zineddin, Abdul; Published Date : 2008-08-01 Report Number : FHWA-HRT-08-034 URL : https://rosap.ntl.bts.gov/view/dot/88021 Huijser, M.P. et al. (2008). Wildlife-Vehicle Collision Reduction Study: Report to Congress. Huijser, M.P. et al. "Wildlife-Vehicle Collision Reduction Study: Report to Congress" (2008) Huijser, M.P. et al. "Wildlife-Vehicle Collision Reduction Study: Report to Congress" , 2008 Export RIS Citation Information. TY - Tech Report AU - Huijser, M.P. AU - McGowan, Patrick AU - Fuller, J. AU - Hardy, A. AU - Kociolek, Angela V. AU - Clevenger, A. P. AU - Smith, D. AU - Ament, R. A2 - Montana State University. Western Transportation Institute A2 - Louis Berger, Inc. A3 - United States. Federal Highway Administration. Office of Safety Research and Development A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center A4 - Durbin, Dennis R. A4 - Zineddin, Abdul A4 - Durbin, Dennis; Zineddin, Abdul AB - Under the SAFETEA-LU Congressional Bill, the Secretary of Transportation was directed to conduct a national wildlife-vehicle collision (WVC) reduction study. The study was to advance the understanding of the causes and impacts of WVCs and identify solutions to this growing safety problem. This report contains the findings of this study, beginning with estimates on the current magnitude and trend for WVCs in the United States. Based on several national datasets, the study found that there are between one and two million WVCs annually in the United States and that the number is increasing. Estimates are provided for the costs associated with WVCs, and the impact of direct road mortality is described for 21 federally listed threatened and endangered species. The core of the report is an in-depth review of over 34 WVC mitigation methods assembled from information obtained from hundreds of literature sources (both published and “gray” literature). Each mitigation measure is described in detail, and information including case studies, benefits, costs, undesirable effects, and design guidelines is provided. The report also covers planning and design considerations and provides cost-benefit analyses for the mitigation methods that had sufficient data available to support these analyses. A working group of seven national experts provided input and evaluated the effectiveness of the mitigation methods, categorizing them as either recommended for implementation, recommended for future research, or not recommended for future research or implementation. A summary of their evaluation is included in this report. Recommendations for implementation of effective measures and for further investigation of promising mitigation measures are provided. AN - dot:88021 KW - Animal vehicle crashes KW - Deer KW - Endangered species KW - Fences KW - Wildlife crossings KW - Wildlife LA - English PB - United States. Federal Highway Administration. Office of Safety Research and Development PY - 2008-08-01 SN - FHWA-HRT-08-034 TI - Wildlife-Vehicle Collision Reduction Study: Report to Congress M3 - Tech Report N1 - United States N1 - DTFH61-05-D-00018 N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88021 ER -
Geometric and Positional Isomer Effects on Ignition Behavior of Cycloalkanes: Implications for Sustainable Aviation Fuels

Yang, Zhibin

;

Faulhaber, Conor

2025-09-01 | PDF

This study investigates the ignition behavior of six dimethylcyclohexane (DMCH) isomers and cis-/trans-decalin, focusing on the effects of molecular geometry and substitution patterns. Ignition delay and derived cetane number (DCN) were measured using a CFR ignition quality tester under ASTM D6890 conditions. Among the DMCH isomers, cis-1,3-DMCH ex ...

12/01/2025

Title : Geometric and Positional Isomer Effects on Ignition Behavior of Cycloalkanes: Implications for Sustainable Aviation Fuels Creator(s) : Yang, Zhibin;Faulhaber, Conor;Boehm, Randall C.;Heyne, Joshua; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;Washington State University; Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Published Date : 2025-09-01 Report Number : acs.energyfuels.5c03856 DOI : https://doi.org/10.1021/acs.energyfuels.5c03856 Yang, Zhibin et al. (2025). Geometric and Positional Isomer Effects on Ignition Behavior of Cycloalkanes: Implications for Sustainable Aviation Fuels. https://doi.org/10.1021/acs.energyfuels.5c03856 Yang, Zhibin et al. "Geometric and Positional Isomer Effects on Ignition Behavior of Cycloalkanes: Implications for Sustainable Aviation Fuels" (2025), https://doi.org/10.1021/acs.energyfuels.5c03856 Yang, Zhibin et al. "Geometric and Positional Isomer Effects on Ignition Behavior of Cycloalkanes: Implications for Sustainable Aviation Fuels" , 2025, https://doi.org/10.1021/acs.energyfuels.5c03856 Export RIS Citation Information. TY - Journal Article AU - Yang, Zhibin AU - Faulhaber, Conor AU - Boehm, Randall C. AU - Heyne, Joshua A2 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A2 - Washington State University A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - This study investigates the ignition behavior of six dimethylcyclohexane (DMCH) isomers and cis-/trans-decalin, focusing on the effects of molecular geometry and substitution patterns. Ignition delay and derived cetane number (DCN) were measured using a CFR ignition quality tester under ASTM D6890 conditions. Among the DMCH isomers, cis-1,3-DMCH exhibited the highest reactivity (DCN = 37.4), while cis-1,2-DMCH showed the lowest (DCN = 21.8). The most significant stereochemical effect was observed between cis- and trans-1,3-DMCH, with a 12-unit DCN difference. Temperature- and pressure-dependent tests of decalin isomers revealed that cis-decalin consistently ignited faster and exhibited stronger pressure sensitivity, supporting a mechanistic interpretation based on 1,5- versus 1,6-H shift pathways. Additionally, the impact of trace polar degradation products on ignition delay (ID) was assessed, revealing significant ID reduction in trans isomers after storage. These findings highlight the need to consider geometric isomerism in kinetic modeling, sustainable aviation fuel formulation, and surrogate design, particularly for fuels rich in cycloalkanes. AB - This is an open access article under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) license https://creativecommons.org/licenses/by/4.0/. Please cite this article as: Energy Fuels 2025, 39, 38, 18641–18648 AN - dot:88020 DO - https://doi.org/10.1021/acs.energyfuels.5c03856 KW - Aviation fuels KW - Molecular structure KW - Chemical reactivity KW - ASCENT KW - Isomerism KW - Redox reactions LA - English PB - ACS Publications PY - 2025-09-01 SN - acs.energyfuels.5c03856 TI - Geometric and Positional Isomer Effects on Ignition Behavior of Cycloalkanes: Implications for Sustainable Aviation Fuels M3 - Journal Article N1 - United States N1 - 13-C-AJFE-WaSU-035, 044 N1 - Open Access; https://creativecommons.org/licenses/by/4.0/ UR - https://rosap.ntl.bts.gov/view/dot/88020 ER -
Upgrading Biocrude Oil into Sustainable Aviation Fuel Using Zeolite-Supported Iron-Molybdenum Carbide Nanocatalysts

Yu, Siying

;

He, Haozhen

2025-06-01 | PDF

Food waste is an underdeveloped source for production of sustainable aviation fuel (SAF). Now, there is no certified conversion process of food waste for SAF by American Society for Testing and Materials (ASTM). We report the use of zeolite-supported molybdenum carbide nanocatalysts in upgrading biocrudes, produced from food wastes through HTL, int ...

12/01/2025

Title : Upgrading Biocrude Oil into Sustainable Aviation Fuel Using Zeolite-Supported Iron-Molybdenum Carbide Nanocatalysts Creator(s) : Yu, Siying;He, Haozhen;Summers, Sabrina;Yang, Zhibin;Si, Buchun;Gao, Runnan;Song, Anran;Heyne, Joshua;Zhang, Yuanhui;Yang, Hong; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;Washington State University; Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Published Date : 2025-06-01 Report Number : sciadv.adu5777 DOI : https://doi.org/10.1126/sciadv.adu5777 Yu, Siying et al. (2025). Upgrading Biocrude Oil into Sustainable Aviation Fuel Using Zeolite-Supported Iron-Molybdenum Carbide Nanocatalysts. https://doi.org/10.1126/sciadv.adu5777 Yu, Siying et al. "Upgrading Biocrude Oil into Sustainable Aviation Fuel Using Zeolite-Supported Iron-Molybdenum Carbide Nanocatalysts" (2025), https://doi.org/10.1126/sciadv.adu5777 Yu, Siying et al. "Upgrading Biocrude Oil into Sustainable Aviation Fuel Using Zeolite-Supported Iron-Molybdenum Carbide Nanocatalysts" , 2025, https://doi.org/10.1126/sciadv.adu5777 Export RIS Citation Information. TY - Journal Article AU - Yu, Siying AU - He, Haozhen AU - Summers, Sabrina AU - Yang, Zhibin AU - Si, Buchun AU - Gao, Runnan AU - Song, Anran AU - Heyne, Joshua AU - Zhang, Yuanhui AU - Yang, Hong A2 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A2 - Washington State University A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - Food waste is an underdeveloped source for production of sustainable aviation fuel (SAF). Now, there is no certified conversion process of food waste for SAF by American Society for Testing and Materials (ASTM). We report the use of zeolite-supported molybdenum carbide nanocatalysts in upgrading biocrudes, produced from food wastes through HTL, into SAF precursors. Our data show a complete removal of oxygen from the biocrude through hydrodeoxygenation and a higher heating value of 46.5 MJ/kg, which is comparable to that of Jet A (46.1 MJ/kg). The prescreening tests (tier alpha and beta) show the average carbon number of the distillation cut (150° to 230°C) of upgraded fuel is 10.6, close to the value of 11.4 for average conventional jet fuel, and the specifications of properties including surface tension, viscosity, heating value, flash point, and freezing point were found to meet the standards of SAF. The metal carbide nanocatalysts were reusable in upgrading tests, and the activity of deoxygenation was retained. AB - This is an open access article under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) license https://creativecommons.org/licenses/by/4.0/. Please cite this article as: Siying Yu et al. ,Upgrading biocrude oil into sustainable aviation fuel using zeolite-supported iron-molybdenum carbide nanocatalysts.Sci. Adv.11,eadu5777(2025). https://doi.org/10.1126/sciadv.adu5777 AN - dot:88019 DO - https://doi.org/10.1126/sciadv.adu5777 KW - Biomass fuels KW - Sustainable transportation KW - Aviation fuels KW - Crude oil KW - ASCENT LA - English PB - American Association for the Advancement of Science PY - 2025-06-01 SN - sciadv.adu5777 TI - Upgrading Biocrude Oil into Sustainable Aviation Fuel Using Zeolite-Supported Iron-Molybdenum Carbide Nanocatalysts M3 - Journal Article N1 - United States N1 - 13-C-AJFE-WaSU-035, 044 N1 - Open Access; https://creativecommons.org/licenses/by/4.0/ UR - https://rosap.ntl.bts.gov/view/dot/88019 ER -
Blend Prediction Model for Vapor Pressure of Jet Fuel Range Hydrocarbons

Boehm, Randall C.

;

Parker, Robert

2025-10-01 | PDF

The ability to predict the vapor pressure and vapor-phase composition of hydrocarbon mixtures (such as jet fuel, sustainable aviation fuel or its un-refined precursors) and partially vaporized hydrocarbon mixtures is important to simulations of processes that involve vaporization such as distillations, flash points, combustion properties of partial ...

12/01/2025

Title : Blend Prediction Model for Vapor Pressure of Jet Fuel Range Hydrocarbons Creator(s) : Boehm, Randall C.;Parker, Robert;Yang, Zhibin;Dooley, Stephen;Heyne, Joshua; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;Washington State University; Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Published Date : 2025-10-01 Report Number : sustainability-17-09612 DOI : https:// doi.org/10.3390/su17219612 Boehm, Randall C. et al. (2025). Blend Prediction Model for Vapor Pressure of Jet Fuel Range Hydrocarbons. https:// doi.org/10.3390/su17219612 Boehm, Randall C. et al. "Blend Prediction Model for Vapor Pressure of Jet Fuel Range Hydrocarbons" (2025), https:// doi.org/10.3390/su17219612 Boehm, Randall C. et al. "Blend Prediction Model for Vapor Pressure of Jet Fuel Range Hydrocarbons" , 2025, https:// doi.org/10.3390/su17219612 Export RIS Citation Information. TY - Journal Article AU - Boehm, Randall C. AU - Parker, Robert AU - Yang, Zhibin AU - Dooley, Stephen AU - Heyne, Joshua A2 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A2 - Washington State University A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - The ability to predict the vapor pressure and vapor-phase composition of hydrocarbon mixtures (such as jet fuel, sustainable aviation fuel or its un-refined precursors) and partially vaporized hydrocarbon mixtures is important to simulations of processes that involve vaporization such as distillations, flash points, combustion properties of partially vaporized fuels, etc. Raoult’s Law provides a simple algebraic formula relating liquid composition and temperature to vapor composition and pressure. However, Raoult’s Law is not accurate at low mole fractions, which is typical for complex mixtures such as fuels. A common approach to correcting Raoult’s Law is to apply a scale factor, a so-called activity coefficient. Numerous models exist for predicting activity coefficients. Here we benchmark against the UNIFAC model, which predicts activity coefficients based on mole fractions, group fractions, Van derWaals volume and surface area and temperature-dependent interaction terms between groups. While this approach is truly predictive, its accuracy at very low mole fractions has not been validated, and it is computationally intensive, particularly for simulations (especially optimizations) that require vapor composition or pressure within the inner-most loop. Here we present an alternative correction to Raoult’s law, where the vapor pressure of the ith component is represented by a modified form of the Clausius–Clapeyron equation. AB - This is an open access article under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) license https://creativecommons.org/licenses/by/4.0/. Please cite this article as: Boehm, R.C.; Parker, R.; Yang, Z.; Dooley, S.; Heyne, J.S. Blend Prediction Model for Vapor Pressure of Jet Fuel Range Hydrocarbons. Sustainability 2025, 17, 9612. https:// doi.org/10.3390/su17219612 AN - dot:88018 DO - https:// doi.org/10.3390/su17219612 KW - Sustainable transportation KW - Aviation fuels KW - Hydrocarbons KW - Vapor pressure KW - Vapor liquid equilibrium KW - NetZero aviation LA - English PB - MDPI PY - 2025-10-01 SN - sustainability-17-09612 TI - Blend Prediction Model for Vapor Pressure of Jet Fuel Range Hydrocarbons M3 - Journal Article N1 - United States N1 - 13-C-AJFE-WaSU-035, 044 N1 - Open Access; https://creativecommons.org/licenses/by/4.0/ UR - https://rosap.ntl.bts.gov/view/dot/88018 ER -
Long-Term Pavement Performance (LTPP) Program

United States. Department of Transportation. Federal Highway Administration

2023-01-01 | PDF

Please join the Federal Highway Administration (FHWA) for a recap of the LTPP program lectern session held at the Transportation Research Board 102nd Annual Meeting in January 2023.

12/01/2025

Title : Long-Term Pavement Performance (LTPP) Program Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center Published Date : 2023-01-01 Report Number : FHWA-HRT-23-055 URL : https://rosap.ntl.bts.gov/view/dot/88017 United States. Department of Transportation. Federal Highway Administration (2023). Long-Term Pavement Performance (LTPP) Program. United States. Department of Transportation. Federal Highway Administration "Long-Term Pavement Performance (LTPP) Program" (2023) United States. Department of Transportation. Federal Highway Administration "Long-Term Pavement Performance (LTPP) Program" , 2023 Export RIS Citation Information. TY - Booklet/Pamphlet A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center AB - Please join the Federal Highway Administration (FHWA) for a recap of the LTPP program lectern session held at the Transportation Research Board 102nd Annual Meeting in January 2023. AN - dot:88017 KW - Perpetual pavements KW - Infrastructure KW - Pavement performance LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2023-01-01 SN - FHWA-HRT-23-055 TI - Long-Term Pavement Performance (LTPP) Program M3 - Booklet/Pamphlet N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88017 ER -
Measurement of Spray Chamber Ignition Delay and Cetane Numbers for Aviation Turbine Fuels

Luecke, Jon ;

Naser, Nimal

2025-05-01 | PDF

Experiments using pure compounds, National Jet Fuels Combustion Program (NJFCP) test fuels, and commercial jet fuels were conducted to demonstrate the equivalence of the indicated cetane number (ICN) and derived cetane number (DCN) for jet fuels. The calibrated range for ICN was also extended to lower cetane number (CN) values (5 to 35) to allow CN ...

12/01/2025

Title : Measurement of Spray Chamber Ignition Delay and Cetane Numbers for Aviation Turbine Fuels Creator(s) : Luecke, Jon;Naser, Nimal;Yang, Zhibin;Heyne, Joshua;McCormick, Robert L; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;Washington State University; Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Published Date : 2025-05-01 Report Number : acs.energyfuels.5c01350 DOI : https://doi.org/10.1021/acs.energyfuels.5c01350 Luecke, Jon et al. (2025). Measurement of Spray Chamber Ignition Delay and Cetane Numbers for Aviation Turbine Fuels. https://doi.org/10.1021/acs.energyfuels.5c01350 Luecke, Jon et al. "Measurement of Spray Chamber Ignition Delay and Cetane Numbers for Aviation Turbine Fuels" (2025), https://doi.org/10.1021/acs.energyfuels.5c01350 Luecke, Jon et al. "Measurement of Spray Chamber Ignition Delay and Cetane Numbers for Aviation Turbine Fuels" , 2025, https://doi.org/10.1021/acs.energyfuels.5c01350 Export RIS Citation Information. TY - Journal Article AU - Luecke, Jon AU - Naser, Nimal AU - Yang, Zhibin AU - Heyne, Joshua AU - McCormick, Robert L A2 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A2 - Washington State University A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - Experiments using pure compounds, National Jet Fuels Combustion Program (NJFCP) test fuels, and commercial jet fuels were conducted to demonstrate the equivalence of the indicated cetane number (ICN) and derived cetane number (DCN) for jet fuels. The calibrated range for ICN was also extended to lower cetane number (CN) values (5 to 35) to allow CN quantification for jet fuel synthetic blending components (SBCs) with low CN. ICN and DCN were shown to be highly correlated for values above about 30. This study presents the most comprehensive comparison of these two methods published to date. Because of the importance of low-volume test methods for early-stage SBC production process development, we demonstrated that ICN and DCN can be accurately measured with 15 mL of fuel, well below 40 to 100 mL required by standard methods. ICN or DCN is important for jet fuels because fuels with lower CN are more prone to lean blowout (LBO), an undesirable operational failure in a jet engine. Comparing data on a fuel-to-air ratio (Φ) at LBO for the NJFCP fuels shows similar linear correlations for ICN and DCN. Ignition delay measurements at lower-pressure and higher-temperature conditions may be more directly relevant to LBO. At 675 °C, 0.5 MPa, and a global Φ of roughly 0.68, ignition delay time correlations to LBO were similar to those produced from DCN and ICN. A much weaker correlation was obtained with a global Φ value of 0.34. AB - This is an open access article under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) license https://creativecommons.org/licenses/by/4.0/. Please cite this article as: Energy Fuels 2025, 39, 22, 10479–10487 AN - dot:88016 DO - https://doi.org/10.1021/acs.energyfuels.5c01350 KW - Atmospheric chemistry KW - Calibration KW - Fossil fuels KW - Fuels KW - ASCENT KW - Redox reactions LA - English PB - American Chemical Society PY - 2025-05-01 SN - acs.energyfuels.5c01350 TI - Measurement of Spray Chamber Ignition Delay and Cetane Numbers for Aviation Turbine Fuels M3 - Journal Article N1 - United States N1 - 13-C-AJFE-WaSU-042 N1 - Open Access; https://creativecommons.org/licenses/by/4.0/ UR - https://rosap.ntl.bts.gov/view/dot/88016 ER -
Long-Term Infrastructure Performance (LTIP) Team

United States. Department of Transportation. Federal Highway Administration

2023-01-01 | PDF

Please join us to learn about the Federal Highway Administration’s 2023 LTIP Student Data Analysis Contest.

12/01/2025

Title : Long-Term Infrastructure Performance (LTIP) Team Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center Published Date : 2023-01-01 Report Number : FHWA-HRT-23-042 URL : https://rosap.ntl.bts.gov/view/dot/88015 United States. Department of Transportation. Federal Highway Administration (2023). Long-Term Infrastructure Performance (LTIP) Team. United States. Department of Transportation. Federal Highway Administration "Long-Term Infrastructure Performance (LTIP) Team" (2023) United States. Department of Transportation. Federal Highway Administration "Long-Term Infrastructure Performance (LTIP) Team" , 2023 Export RIS Citation Information. TY - Booklet/Pamphlet A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center AB - Please join us to learn about the Federal Highway Administration’s 2023 LTIP Student Data Analysis Contest. AN - dot:88015 KW - Perpetual pavements KW - Infrastructure KW - Pavement performance KW - Education and training LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2023-01-01 SN - FHWA-HRT-23-042 TI - Long-Term Infrastructure Performance (LTIP) Team M3 - Booklet/Pamphlet N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88015 ER -
Development of Crash Modification Factors for Bicycle Treatments at Intersections [Techbrief]

Avelar, Raul

;

Kutela, Boniphace

2023-06-01 | PDF

The Federal Highway Administration’s (FHWA) Development of Crash Modification Factors (DCMF) Program was established in 2012 to address highway safety research needs for evaluating new and innovative safety strategies by developing reliable quantitative estimates of their effectiveness in reducing crashes (FHWA 2022). Forty-one State departments of ...

12/01/2025

Title : Development of Crash Modification Factors for Bicycle Treatments at Intersections [Techbrief] Creator(s) : Avelar, Raul;Kutela, Boniphace;Li, Xiao; Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center Published Date : 2023-06-01 Report Number : FHWA-HRT-23-031 URL : https://rosap.ntl.bts.gov/view/dot/88014 Avelar, Raul et al. (2023). Development of Crash Modification Factors for Bicycle Treatments at Intersections [Techbrief]. Avelar, Raul and Kutela, Boniphace and Li, Xiao "Development of Crash Modification Factors for Bicycle Treatments at Intersections [Techbrief]" (2023) Avelar, Raul et al. "Development of Crash Modification Factors for Bicycle Treatments at Intersections [Techbrief]" , 2023 Export RIS Citation Information. TY - Brief AU - Avelar, Raul AU - Kutela, Boniphace AU - Li, Xiao A2 - United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center AB - The Federal Highway Administration’s (FHWA) Development of Crash Modification Factors (DCMF) Program was established in 2012 to address highway safety research needs for evaluating new and innovative safety strategies by developing reliable quantitative estimates of their effectiveness in reducing crashes (FHWA 2022). Forty-one State departments of transportation (DOTs) provided technical feedback on safety improvements to the DCMF Program and implemented new safety improvements to facilitate evaluations. These States are members of the Evaluation of Low-Cost Safety Improvements Pooled Fund Study (ELCSI-PFS), which functions under the DCMF Program. This project evaluated bicycle treatments at urban intersections. The ELCSI-PFS Technical Advisory Committee selected this evaluation as one of the priorities within its purview. AN - dot:88014 KW - Crash modification factors KW - Bicycle safety KW - Intersections KW - Bicycle lanes LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology PY - 2023-06-01 SN - FHWA-HRT-23-031 TI - Development of Crash Modification Factors for Bicycle Treatments at Intersections [Techbrief] M3 - Brief N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88014 ER -
Modeling Uncertainties in Primary Zone Soot Predictions for a Rich-Quench-Lean Combustion System

Karpe, Shubham Basavaraj

;

Menon, Suresh

2025-08-01 | PDF

A comprehensive uncertainty quantification (UQ) of soot volume fraction (SVF) predictions in the primary zone of a Rich-Quench-Lean (RQL) combustor is presented, with particular emphasis on the modeling uncertainties in the rates of nucleation, growth, oxidation, condensation, and coagulation. Large-eddy simulations (LES) of soot formation in a rea ...

12/01/2025

Title : Modeling Uncertainties in Primary Zone Soot Predictions for a Rich-Quench-Lean Combustion System Creator(s) : Karpe, Shubham Basavaraj;Menon, Suresh; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;Georgia Institute of Technology; Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Published Date : 2025-08-01 Report Number : j.proci.2025.105805 DOI : https://doi.org/10.1016/j.proci.2025.105805 Karpe, Shubham Basavaraj and Menon, Suresh (2025). Modeling Uncertainties in Primary Zone Soot Predictions for a Rich-Quench-Lean Combustion System. https://doi.org/10.1016/j.proci.2025.105805 Karpe, Shubham Basavaraj and Menon, Suresh "Modeling Uncertainties in Primary Zone Soot Predictions for a Rich-Quench-Lean Combustion System" (2025), https://doi.org/10.1016/j.proci.2025.105805 Karpe, Shubham Basavaraj and Menon, Suresh "Modeling Uncertainties in Primary Zone Soot Predictions for a Rich-Quench-Lean Combustion System" , 2025, https://doi.org/10.1016/j.proci.2025.105805 Export RIS Citation Information. TY - Journal Article AU - Karpe, Shubham Basavaraj AU - Menon, Suresh A2 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A2 - Georgia Institute of Technology A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - A comprehensive uncertainty quantification (UQ) of soot volume fraction (SVF) predictions in the primary zone of a Rich-Quench-Lean (RQL) combustor is presented, with particular emphasis on the modeling uncertainties in the rates of nucleation, growth, oxidation, condensation, and coagulation. Large-eddy simulations (LES) of soot formation in a realistic single-sector RQL combustor are first performed, and the local thermochemical data, along with the volumes of the zones containing the respective finite volume cells, are then used to construct a chemical reactor network (CRN) model. The CRN model, coupled with the UQ tool DAKOTA, is used to conduct forward UQ, sensitivity analysis, and inverse UQ. The forward UQ indicates variability ranging from 28 % to 89% around the mean soot prediction, depending on the location within the combustor. The local and global sensitivity analyses highlight the contributions of nucleation and condensation processes near the fuel injection zone, while growth and oxidation processes predominantly influence soot predictions in the primary zone. Since the baseline model underpredicts soot compared to experimental measurements, a Bayesian inference-based inverse UQ analysis is performed to identify sensitive input rate uncertainties that can improve the quantitative agreement with experimental soot levels. Thus, the overall strategy identifies the most influential aspects of the soot model, their relevant sensitivity to local zones within the combustor, and further refinements to the baseline rates that can provide valuable insights for future model developments. AB - This is an open access article under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) license https://creativecommons.org/licenses/by/4.0/. Please cite this article as: Shubham Basavaraj Karpe, Suresh Menon, Modeling uncertainties in primary zone soot predictions for a rich-quench-lean combustion system, Proceedings of the Combustion Institute, Volume 41, 2025, 105805, ISSN 1540-7489, https://doi.org/10.1016/j.proci.2025.105805. AN - dot:88013 DO - https://doi.org/10.1016/j.proci.2025.105805 KW - Aircraft exhaust gases KW - Alternate fuels KW - Carbon KW - Oxidation KW - Mathematical prediction KW - Estimating KW - ASCENT KW - Soot LA - English PB - Elsevier PY - 2025-08-01 SN - j.proci.2025.105805 TI - Modeling Uncertainties in Primary Zone Soot Predictions for a Rich-Quench-Lean Combustion System M3 - Journal Article N1 - United States N1 - 13-C-AJFE-GIT-100 N1 - Open Access: https://creativecommons.org/licenses/by/4.0/ UR - https://rosap.ntl.bts.gov/view/dot/88013 ER -
An Experimental Evaluation of an Electronic Rotor Phase Synchronization System for Multirotor Aircraft Noise Control

Valente, Vítor T ;

Greenwood, Eric

2025-09-01 | PDF

Multirotor electric vertical take-off and landing vehicles and small unmanned aircraft systems commonly use distributed electric propulsion. One approach to reducing their noise involves synchronizing rotor phase relationships to control radiated noise directionally. This paper presents a practical electronic phase synchronization method for multir ...

12/01/2025

Title : An Experimental Evaluation of an Electronic Rotor Phase Synchronization System for Multirotor Aircraft Noise Control Creator(s) : Valente, Vítor T;Greenwood, Eric;Johnson, Eric; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;Pennsylvania State University; Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Published Date : 2025-09-01 Report Number : jahs2347 URL : https://rosap.ntl.bts.gov/view/dot/88012 Valente, Vítor T et al. (2025). An Experimental Evaluation of an Electronic Rotor Phase Synchronization System for Multirotor Aircraft Noise Control. Valente, Vítor T and Greenwood, Eric and Johnson, Eric "An Experimental Evaluation of an Electronic Rotor Phase Synchronization System for Multirotor Aircraft Noise Control" (2025) Valente, Vítor T et al. "An Experimental Evaluation of an Electronic Rotor Phase Synchronization System for Multirotor Aircraft Noise Control" , 2025 Export RIS Citation Information. TY - Journal Article AU - Valente, Vítor T AU - Greenwood, Eric AU - Johnson, Eric A2 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A2 - Pennsylvania State University A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - Multirotor electric vertical take-off and landing vehicles and small unmanned aircraft systems commonly use distributed electric propulsion. One approach to reducing their noise involves synchronizing rotor phase relationships to control radiated noise directionally. This paper presents a practical electronic phase synchronization method for multirotor aircraft, experimentally evaluates its effectiveness using a hexacopter in an anechoic chamber, and investigates how vehicle configuration influences noise control capability. Harmonic noise reductions of 10 dB are demonstrated over a 20◦ azimuthal arc, with limited increases in other directions. Noise amplification of 6 dB is also achieved over the same region. Global reductions of 6 dB across nearly all observer angles are obtained using alternative rotor phase offsets. Statistical analysis of phase controller error indicates that maintaining phase accuracy within 5◦ is necessary for 10 dB attenuation. Simulations across various rotor configurations show consistent noise control performance, with higher rotor counts enabling greater directional control of radiated noise. AN - dot:88012 KW - Rotor blades KW - Rotors KW - Aviation KW - Aircraft noise KW - Noise control KW - ASCENT LA - English PB - United States. Department of Transportation. Federal Aviation Administration PY - 2025-09-01 SN - jahs2347 TI - An Experimental Evaluation of an Electronic Rotor Phase Synchronization System for Multirotor Aircraft Noise Control M3 - Journal Article N1 - United States N1 - 13-C-AJFE-PSU-112 UR - https://rosap.ntl.bts.gov/view/dot/88012 ER -
SMART Counties in Kansas [Data Management Plan]

Cui, Qingbin ;

Zhang, Yunfeng

2025-11-10 | PDF

Prototype a GIS based platform that integrates local infrastructure assets to provide innovative data, monitor asset conditions, and inform technological solutions in Kansas.

12/01/2025

Title : SMART Counties in Kansas [Data Management Plan] Creator(s) : Cui, Qingbin;Zhang, Yunfeng;Tsegaye, Natnael Taye; Corporate Creator(s) : North Central Regional Planning Commission Corporate Contributor(s) : Strengthening Mobility and Revolutionizing Transportation (SMART) Program Published Date : 2025-11-10 URL : https://rosap.ntl.bts.gov/view/dot/88011 Cui, Qingbin et al. (2025). SMART Counties in Kansas [Data Management Plan]. Cui, Qingbin and Zhang, Yunfeng and Tsegaye, Natnael Taye "SMART Counties in Kansas [Data Management Plan]" (2025) Cui, Qingbin et al. "SMART Counties in Kansas [Data Management Plan]" , 2025 Export RIS Citation Information. TY - Data Management Plan AU - Cui, Qingbin AU - Zhang, Yunfeng AU - Tsegaye, Natnael Taye A2 - North Central Regional Planning Commission A3 - Strengthening Mobility and Revolutionizing Transportation (SMART) Program A4 - Ohlde, Debra AB - Prototype a GIS based platform that integrates local infrastructure assets to provide innovative data, monitor asset conditions, and inform technological solutions in Kansas. AN - dot:88011 KW - Data management plans KW - Bridges KW - Drones KW - Structural health monitoring KW - Concrete KW - Unmanned aerial vehicles LA - English PB - North Central Regional Planning Commission PY - 2025-11-10 TI - SMART Counties in Kansas [Data Management Plan] M3 - Data Management Plan N1 - United States N1 - 69A3552341015 SMARTFY22N1P1G24 UR - https://rosap.ntl.bts.gov/view/dot/88011 ER -
Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 8, Data Complete Through 11/26/2025

United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information

2025-11-26 | Special Issue - Weekly Motor Fuel Report | PDF

The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration ...

12/01/2025

Title : Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 8, Data Complete Through 11/26/2025 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Published Date : 2025-11-26 Series : Special Issue - Weekly Motor Fuel Report URL : https://rosap.ntl.bts.gov/view/dot/88010 United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2025). Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 8, Data Complete Through 11/26/2025. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information "Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 8, Data Complete Through 11/26/2025" (2025) United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information "Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 8, Data Complete Through 11/26/2025" , 2025 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information AB - The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration (EIA) website. The EIA publishes the average daily amount of gasoline supplied in barrels, which HPPI converts to an average number of gallons of gasoline per week. AN - dot:88010 KW - Fuel consumption KW - Gasoline KW - Supply KW - Traffic volume KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information PY - 2025-11-26 T2 - Special Issue - Weekly Motor Fuel Report TI - Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 8, Data Complete Through 11/26/2025 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88010 ER -
VOICES

United States. Department of Transportation. Federal Highway Administration

2022-01-01 | PDF

The Virtual Open Innovation Collaborative Environment for Safety (VOICES) project is developingan environment to allow geographically distributed stakeholders (public sector, private sector, and academic institutions) to collaborate and test together using a common middleware. Throughresearch that incorporates live, virtual, and constructed element ...

12/01/2025

Title : VOICES Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center Published Date : 2022-01-01 Report Number : FHWA-HRT-22-106 URL : https://rosap.ntl.bts.gov/view/dot/88009 United States. Department of Transportation. Federal Highway Administration (2022). VOICES. United States. Department of Transportation. Federal Highway Administration "VOICES" (2022) United States. Department of Transportation. Federal Highway Administration "VOICES" , 2022 Export RIS Citation Information. TY - Booklet/Pamphlet A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center AB - The Virtual Open Innovation Collaborative Environment for Safety (VOICES) project is developing AB - an environment to allow geographically distributed stakeholders (public sector, private sector, and academic institutions) to collaborate and test together using a common middleware. Through AB - research that incorporates live, virtual, and constructed elements in real-time, VOICES is improving interoperability across the country and leading the way in demonstrating the value of AB - collaborative research for cooperative driving automation (CDA). AN - dot:88009 KW - Automation KW - Connectivity KW - Testing KW - Cooperation LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2022-01-01 SN - FHWA-HRT-22-106 TI - VOICES M3 - Booklet/Pamphlet N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88009 ER -
Infrastructure Open-Source Tools

United States. Department of Transportation. Federal Highway Administration

2022-01-01 | PDF

The Federal Highway Administration (FHWA) has developed various infrastructure-related, open-source tools to promote the deployment of interoperable transportation systems. Infrastructure open-source software (OSS) allows infrastructure owners and operators, software companies, and device manufacturers to deploy intelligent transportation systems a ...

12/01/2025

Title : Infrastructure Open-Source Tools Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center Published Date : 2022-01-01 Report Number : FHWA-HRT-22-105 URL : https://rosap.ntl.bts.gov/view/dot/88008 United States. Department of Transportation. Federal Highway Administration (2022). Infrastructure Open-Source Tools. United States. Department of Transportation. Federal Highway Administration "Infrastructure Open-Source Tools" (2022) United States. Department of Transportation. Federal Highway Administration "Infrastructure Open-Source Tools" , 2022 Export RIS Citation Information. TY - Booklet/Pamphlet A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center AB - The Federal Highway Administration (FHWA) has developed various infrastructure-related, open-source tools to promote the deployment of interoperable transportation systems. Infrastructure open-source software (OSS) allows infrastructure owners and operators, software companies, and device manufacturers to deploy intelligent transportation systems and to collaborate and contribute to these tools. AN - dot:88008 KW - Infrastructure KW - Software KW - Transportation system management KW - Open-Source Software LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2022-01-01 SN - FHWA-HRT-22-105 TI - Infrastructure Open-Source Tools M3 - Booklet/Pamphlet N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88008 ER -
CDA Support Services

United States. Department of Transportation. Federal Highway Administration

2022-01-01 | PDF

Cooperative Driving Automation (CDA) Support Services provides stakeholders with knowledge and technical support on the CDA Product Suite to accelerate CDA research. The Federal Highway Administration's Saxton Transportation Operations Laboratory staff provides tools. Training, guidance, support materials, and documentation are being developed unde ...

12/01/2025

Title : CDA Support Services Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center Published Date : 2022-01-01 Report Number : FHWA-HRT-22-104 URL : https://rosap.ntl.bts.gov/view/dot/88007 United States. Department of Transportation. Federal Highway Administration (2022). CDA Support Services. United States. Department of Transportation. Federal Highway Administration "CDA Support Services" (2022) United States. Department of Transportation. Federal Highway Administration "CDA Support Services" , 2022 Export RIS Citation Information. TY - Booklet/Pamphlet A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center AB - Cooperative Driving Automation (CDA) Support Services provides stakeholders with knowledge and technical support on the CDA Product Suite to accelerate CDA research. The Federal Highway Administration's Saxton Transportation Operations Laboratory staff provides tools. Training, guidance, support materials, and documentation are being developed under CDA Support Services. AN - dot:88007 KW - Automated vehicle control KW - Stakeholders KW - Education and training LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2022-01-01 SN - FHWA-HRT-22-104 TI - CDA Support Services M3 - Booklet/Pamphlet N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88007 ER -
Cooperative Driving Automation

United States. Department of Transportation. Federal Highway Administration

2022-01-01 | PDF

Collaborate with the Federal Highway Administration (FHWA) Office of Safety and Operations Research and Development (HRSO) and help create a safer and more efficient transportation system.

12/01/2025

Title : Cooperative Driving Automation Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center Published Date : 2022-01-01 Report Number : FHWA-HRT-22-103 URL : https://rosap.ntl.bts.gov/view/dot/88006 United States. Department of Transportation. Federal Highway Administration (2022). Cooperative Driving Automation. United States. Department of Transportation. Federal Highway Administration "Cooperative Driving Automation" (2022) United States. Department of Transportation. Federal Highway Administration "Cooperative Driving Automation" , 2022 Export RIS Citation Information. TY - Brief A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center AB - Collaborate with the Federal Highway Administration (FHWA) Office of Safety and Operations Research and Development (HRSO) and help create a safer and more efficient transportation system. AN - dot:88006 KW - Intelligent vehicles KW - Connected vehicles KW - Traffic safety KW - Transportation operations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2022-01-01 SN - FHWA-HRT-22-103 TI - Cooperative Driving Automation M3 - Brief N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88006 ER -
Connected and Automated Vehicles Support Services

United States. Department of Transportation. Federal Highway Administration

2022-01-01 | PDF

This service provides a connected and automated vehicle (CAV) user with the opportunity to become familiar with the types of equipment typically used in connected vehicle deployment. Equipment loans can include roadside units, onboard units, diagnostic tools, traffic signal controllers, and connected work zone equipment.

12/01/2025

Title : Connected and Automated Vehicles Support Services Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center Published Date : 2022-01-01 Report Number : FHWA-HRT-22-102 URL : https://rosap.ntl.bts.gov/view/dot/88005 United States. Department of Transportation. Federal Highway Administration (2022). Connected and Automated Vehicles Support Services. United States. Department of Transportation. Federal Highway Administration "Connected and Automated Vehicles Support Services" (2022) United States. Department of Transportation. Federal Highway Administration "Connected and Automated Vehicles Support Services" , 2022 Export RIS Citation Information. TY - Booklet/Pamphlet A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center AB - This service provides a connected and automated vehicle (CAV) user with the opportunity to become familiar with the types of equipment typically used in connected vehicle deployment. Equipment loans can include roadside units, onboard units, diagnostic tools, traffic signal controllers, and connected work zone equipment. AN - dot:88005 KW - Connected vehicles KW - Intelligent vehicles KW - Equipment KW - Plan implementation LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2022-01-01 SN - FHWA-HRT-22-102 TI - Connected and Automated Vehicles Support Services M3 - Booklet/Pamphlet N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88005 ER -
Sustainable Aviation Fuel Production in Colombia: Opportunities and Challenge

Martinez-Valencia, Lina ;

Valderrama-Rios, Claudia

2024-01-01 | PDF

The sustainable aviation fuel (SAF) working group in Colombia was convened under the SAF Global Supply Chain Development project (Project A93) led by the Federal Aviation Administration’s (FAA) Center of Excellence for Alternative Jet Fuels and Environment, also termed the Aviation Sustainability Center of Excellence (ASCENT) and executed by Washin ...

12/01/2025

Title : Sustainable Aviation Fuel Production in Colombia: Opportunities and Challenge Creator(s) : Martinez-Valencia, Lina;Valderrama-Rios, Claudia; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Contributor(s) : Garcia-Perez, Manuel Published Date : 2024-01-01 DOI : https://doi.org/10.7273/000006281 Martinez-Valencia, Lina and Valderrama-Rios, Claudia (2024). Sustainable Aviation Fuel Production in Colombia: Opportunities and Challenge. https://doi.org/10.7273/000006281 Martinez-Valencia, Lina and Valderrama-Rios, Claudia "Sustainable Aviation Fuel Production in Colombia: Opportunities and Challenge" (2024), https://doi.org/10.7273/000006281 Martinez-Valencia, Lina and Valderrama-Rios, Claudia "Sustainable Aviation Fuel Production in Colombia: Opportunities and Challenge" , 2024, https://doi.org/10.7273/000006281 Export RIS Citation Information. TY - Tech Report AU - Martinez-Valencia, Lina AU - Valderrama-Rios, Claudia A2 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy A4 - Garcia-Perez, Manuel A4 - Lobo, Prem AB - The sustainable aviation fuel (SAF) working group in Colombia was convened under the SAF Global Supply Chain Development project (Project A93) led by the Federal Aviation Administration’s (FAA) Center of Excellence for Alternative Jet Fuels and Environment, also termed the Aviation Sustainability Center of Excellence (ASCENT) and executed by Washington State University. The working group includes stakeholders across aviation, biofuel production, agriculture, government agencies, academic research, and technical consultancies. A complete list of stakeholders is included after the cover page. This group recognizes that developing SAF requires gathering knowledge and insights across multiple sectors, such as academia, private enterprise, local and federal governments, as well as multilateral, environmental, and energy advocates. This report serves as a high-level information identification to be use as starting point for designing and analyzing the supply chain to produce SAF in Colombia. AN - dot:88004 DO - https://doi.org/10.7273/000006281 KW - Sustainable transportation KW - Aviation fuels KW - Fuel processing KW - Supply chain management KW - Biomass fuels LA - English PB - United States. Department of Transportation. Federal Aviation Administration PY - 2024-01-01 TI - Sustainable Aviation Fuel Production in Colombia: Opportunities and Challenge M3 - Tech Report N1 - Colombia N1 - 13-C-AJFE-WaSU-037 N1 - Open Access UR - https://rosap.ntl.bts.gov/view/dot/88004 ER -
Query Techniques

United States. Department of Transportation. Federal Highway Administration

2022-01-01 | PDF

This sheet defines several search techniques and offers examples of how to use them.

12/01/2025

Title : Query Techniques Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center Published Date : 2022-01-01 Report Number : FHWA-HRT-22-056 URL : https://rosap.ntl.bts.gov/view/dot/88003 United States. Department of Transportation. Federal Highway Administration (2022). Query Techniques. United States. Department of Transportation. Federal Highway Administration "Query Techniques" (2022) United States. Department of Transportation. Federal Highway Administration "Query Techniques" , 2022 Export RIS Citation Information. TY - Booklet/Pamphlet A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center AB - This sheet defines several search techniques and offers examples of how to use them. AN - dot:88003 KW - Library operations KW - Information management KW - Information services KW - Education and training methods KW - Research KW - Guides to information LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2022-01-01 SN - FHWA-HRT-22-056 TI - Query Techniques M3 - Booklet/Pamphlet N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88003 ER -
Long-Term Pavement Performance Warm-Mix Asphalt Study Final Report, Volume Ⅱ: SPS-10 Experimental Matrix and Research Plan

Puccinelli, Jason ;

Schmalzer, Peter

2023-02-01 | PDF

The purpose of this report is to document the research plan and experimental design for the Specific Pavement Studies-10 (SPS-10) experiment for the Long-Term Pavement Performance (LTPP) program. Projects nominated for the SPS-10 experiment would be constructed specifically to satisfy experiment design cells within the experimental matrix and would ...

12/01/2025

Title : Long-Term Pavement Performance Warm-Mix Asphalt Study Final Report, Volume Ⅱ: SPS-10 Experimental Matrix and Research Plan Creator(s) : Puccinelli, Jason;Schmalzer, Peter;Senn, Kevin;McDonald, Linda; Corporate Creator(s) : NCE Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development;United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center; Contributor(s) : Springer, Jack Published Date : 2023-02-01 Report Number : FHWA-HRT-22-019 URL : https://rosap.ntl.bts.gov/view/dot/88002 Puccinelli, Jason et al. (2023). Long-Term Pavement Performance Warm-Mix Asphalt Study Final Report, Volume Ⅱ: SPS-10 Experimental Matrix and Research Plan. Puccinelli, Jason et al. "Long-Term Pavement Performance Warm-Mix Asphalt Study Final Report, Volume Ⅱ: SPS-10 Experimental Matrix and Research Plan" (2023) Puccinelli, Jason et al. "Long-Term Pavement Performance Warm-Mix Asphalt Study Final Report, Volume Ⅱ: SPS-10 Experimental Matrix and Research Plan" , 2023 Export RIS Citation Information. TY - Tech Report AU - Puccinelli, Jason AU - Schmalzer, Peter AU - Senn, Kevin AU - McDonald, Linda A2 - NCE A3 - United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center A4 - Springer, Jack A4 - Springer, Jack AB - The purpose of this report is to document the research plan and experimental design for the Specific Pavement Studies-10 (SPS-10) experiment for the Long-Term Pavement Performance (LTPP) program. Projects nominated for the SPS-10 experiment would be constructed specifically to satisfy experiment design cells within the experimental matrix and would adhere to the guidelines set forth in this research plan. Because these projects would be nominated prior to construction, all material properties, sampling, and construction activities could be documented to ensure a complete data set. This document defines the goals/objectives of the SPS-10 experiment, the independent variables to be studied, and the methods used to control other factors that affect pavement performance. AN - dot:88002 ET - Final Report KW - Pavement performance KW - Warm mix paving mixtures KW - Asphalt concrete KW - Asphalt concrete pavements KW - Subgrade (Pavements) KW - Monitoring LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development PY - 2023-02-01 SN - FHWA-HRT-22-019 TI - Long-Term Pavement Performance Warm-Mix Asphalt Study Final Report, Volume Ⅱ: SPS-10 Experimental Matrix and Research Plan M3 - Tech Report N1 - United States N1 - DTFH61-12-C-00017 N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88002 ER -
Characterization of Key Asphalt Mixtures for AASHTOware Pavement-ME Design

Bowers, Benjamin F. ;

Timm, David H.

2025-07-01 | PDF

The Alabama Department of Transportation (ALDOT) is currently using the Alabama Design and Analysis of Pavement Thickness (ADAPT) software for their structural pavement design process, which is based on the 1993 American Association of State Highway and Transportation Officials (AASHTO) Pavement Design Guide. In 2008, the American Association of St ...

12/01/2025

Title : Characterization of Key Asphalt Mixtures for AASHTOware Pavement-ME Design Creator(s) : Bowers, Benjamin F.;Timm, David H.;Moraes, Raquel;Ambrose, Kevin;Gatiganti, Surendra C; Corporate Creator(s) : Auburn University. National Center for Asphalt Technology Corporate Contributor(s) : Alabama. Department of Transportation Published Date : 2025-07-01 URL : https://rosap.ntl.bts.gov/view/dot/88001 Bowers, Benjamin F. et al. (2025). Characterization of Key Asphalt Mixtures for AASHTOware Pavement-ME Design. Bowers, Benjamin F. et al. "Characterization of Key Asphalt Mixtures for AASHTOware Pavement-ME Design" (2025) Bowers, Benjamin F. et al. "Characterization of Key Asphalt Mixtures for AASHTOware Pavement-ME Design" , 2025 Export RIS Citation Information. TY - Tech Report AU - Bowers, Benjamin F. AU - Timm, David H. AU - Moraes, Raquel AU - Ambrose, Kevin AU - Gatiganti, Surendra C A2 - Auburn University. National Center for Asphalt Technology A3 - Alabama. Department of Transportation AB - The Alabama Department of Transportation (ALDOT) is currently using the Alabama Design and Analysis of Pavement Thickness (ADAPT) software for their structural pavement design process, which is based on the 1993 American Association of State Highway and Transportation Officials (AASHTO) Pavement Design Guide. In 2008, the American Association of State Highway and Transportation Officials (AASHTO) released the “Mechanistic-Empirical Pavement Design Guide – A Manual of Practice (MEPDG)”, which documents a pavement design methodology based on engineering mechanics that has been nationally calibrated using in-service pavement performance data (AAHSTO, 2008). In 2011, AASHTO released the first version of DARWin-ME, rebranded to AASHTOWare© Pavement ME Design, which is a production ready pavement design software tool that expands and improves the features of the prototype computational software developed as part of National Cooperative Highway Research Program (NCHRP) 1-37A Project - Development of the 2002 Guide for the Design of New and Rehabilitated Pavement Structures. AN - dot:88001 ET - Final Report KW - Asphalt mixtures KW - Concrete pavements KW - Mix design KW - Pavement design KW - Mechanistic-empirical pavement design LA - English PB - Alabama. Department of Transportation PY - 2025-07-01 TI - Characterization of Key Asphalt Mixtures for AASHTOware Pavement-ME Design M3 - Tech Report N1 - United States N1 - 931-048 UR - https://rosap.ntl.bts.gov/view/dot/88001 ER -
Balanced Mix Design Field Trial Projects in Alabama

Sadeghi, Mohammad ;

Hartzog, Zane

2025-09-01 | PDF

The Alabama Department of Transportation (ALDOT) is advancing Balanced Mix Design (BMD) to improve the durability, reliability, and cost-effectiveness of asphalt pavements. To support implementation, a field validation project was conducted on State Route 55 in Covington County, Alabama, using six asphalt mixtures designed to meet target thresholds ...

12/01/2025

Title : Balanced Mix Design Field Trial Projects in Alabama Creator(s) : Sadeghi, Mohammad;Hartzog, Zane;Tran, Nam;Chen, Chen;West, Randy;Yin, Fan; Corporate Creator(s) : Auburn University. National Center for Asphalt Technology Corporate Contributor(s) : Alabama. Department of Transportation. Bureau of Research and Development Published Date : 2025-09-01 URL : https://rosap.ntl.bts.gov/view/dot/88000 Sadeghi, Mohammad et al. (2025). Balanced Mix Design Field Trial Projects in Alabama. Sadeghi, Mohammad et al. "Balanced Mix Design Field Trial Projects in Alabama" (2025) Sadeghi, Mohammad et al. "Balanced Mix Design Field Trial Projects in Alabama" , 2025 Export RIS Citation Information. TY - Tech Report AU - Sadeghi, Mohammad AU - Hartzog, Zane AU - Tran, Nam AU - Chen, Chen AU - West, Randy AU - Yin, Fan A2 - Auburn University. National Center for Asphalt Technology A3 - Alabama. Department of Transportation. Bureau of Research and Development AB - The Alabama Department of Transportation (ALDOT) is advancing Balanced Mix Design (BMD) to improve the durability, reliability, and cost-effectiveness of asphalt pavements. To support implementation, a field validation project was conducted on State Route 55 in Covington County, Alabama, using six asphalt mixtures designed to meet target thresholds for the Cracking Tolerance Index (CTIndex) and High-Temperature Indirect Tensile Strength (HT-ITS). Laboratory evaluation included the IDEAL-CT, HT-IDT, and Hamburg Wheel Tracking Test (HWTT) on lab-mixed/lab-compacted (LMLC), hot-compacted plant-mixed/lab-compacted (H-PMLC), and reheated plant-mixed/lab-compacted (RHPMLC) specimens. AN - dot:88000 ET - Final Report, April 1, 2022 – September 30, 2025 KW - Mix design KW - Volumetric analysis KW - Field studies KW - Rutting KW - Cracking KW - Failure LA - English PB - Alabama. Department of Transportation PY - 2025-09-01 TI - Balanced Mix Design Field Trial Projects in Alabama M3 - Tech Report N1 - United States N1 - 931-066 UR - https://rosap.ntl.bts.gov/view/dot/88000 ER -
Exploratory Advanced Research Program [Brochure 2022]

United States. Department of Transportation. Federal Highway Administration

2022-01-01 | PDF

Exploratory advanced research focuses on longer term, higher risk research with tremendous potential for transformational improvements to plan, build, renew, and operate safe, congestion free, and environmentally sound transportation systems. Exploratory research matches opportunities from discoveries in science and technology with the needs of our ...

12/01/2025

Title : Exploratory Advanced Research Program [Brochure 2022] Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center Published Date : 2022-01-01 Report Number : FHWA-HRT-22-006 URL : https://rosap.ntl.bts.gov/view/dot/87999 United States. Department of Transportation. Federal Highway Administration (2022). Exploratory Advanced Research Program [Brochure 2022]. United States. Department of Transportation. Federal Highway Administration "Exploratory Advanced Research Program [Brochure 2022]" (2022) United States. Department of Transportation. Federal Highway Administration "Exploratory Advanced Research Program [Brochure 2022]" , 2022 Export RIS Citation Information. TY - Booklet/Pamphlet A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center AB - Exploratory advanced research focuses on longer term, higher risk research with tremendous potential for transformational improvements to plan, build, renew, and operate safe, congestion free, and environmentally sound transportation systems. Exploratory research matches opportunities from discoveries in science and technology with the needs of our Nation’s highway AB - transportation system. Organizations and researchers can face uncertainties in research approaches and outcomes. Those challenges can lead to innovative problem-solving and research AB - techniques, instruments, and processes that can be of value to future advanced or applied research projects. AN - dot:87999 KW - Research projects KW - Highway engineering KW - Intermodal transportation LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2022-01-01 SN - FHWA-HRT-22-006 TI - Exploratory Advanced Research Program [Brochure 2022] M3 - Booklet/Pamphlet N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87999 ER -
Lessons Learned from Regional Congestion Pricing Workshops (RCPWs)

Boyapati, Rama Krishna

2017-11-01 | PDF

The Federal Highway Administration (FHWA) supports efforts by State and local governments or other public authorities as they establish, maintain, monitor, and evaluate local congestion pricing programs. FHWA with support from the Battelle Team (Battelle and the Texas A&M Transportation Institute (TTI)) hosted a series of Regional Congestion Pricin ...

12/01/2025

Title : Lessons Learned from Regional Congestion Pricing Workshops (RCPWs) Creator(s) : Boyapati, Rama Krishna Corporate Creator(s) : Battelle Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2017-11-01 Report Number : FHWA-HOP-18-015 URL : https://rosap.ntl.bts.gov/view/dot/87998 Boyapati, Rama Krishna (2017). Lessons Learned from Regional Congestion Pricing Workshops (RCPWs). Boyapati, Rama Krishna "Lessons Learned from Regional Congestion Pricing Workshops (RCPWs)" (2017) Boyapati, Rama Krishna "Lessons Learned from Regional Congestion Pricing Workshops (RCPWs)" , 2017 Export RIS Citation Information. TY - Tech Report AU - Boyapati, Rama Krishna A2 - Battelle A3 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - The Federal Highway Administration (FHWA) supports efforts by State and local governments or other public authorities as they establish, maintain, monitor, and evaluate local congestion pricing programs. FHWA with support from the Battelle Team (Battelle and the Texas A&M Transportation Institute (TTI)) hosted a series of Regional Congestion Pricing Workshops (RCPWs) to further develop, advance, promote, and enhance tolling and pricing programs and initiatives in metropolitan areas. The workshops featured experts from operating projects who shared lessons learned from their experiences establishing congestion pricing programs. The information shared was designed to help workshop participants plan, implement, and advance a congestion pricing project in their region. The workshops were conducted through an interactive and knowledge sharing approach to encourage stakeholder engagement. This report focuses on the findings from three such workshops held between March 2016 and May 2017 in Schaumburg, Illinois; Pittsburgh, Pennsylvania; and Portland, Oregon. It details cross-cutting issues impacting participating stakeholders identified during the webinars, summarizes key developments achieved in the candidate regions since the webinars were hosted, and concludes with a summary of key takeaways and next steps based on stakeholder inputs and workshop experiences. AN - dot:87998 ET - Lessons Learned KW - Traffic congestion KW - High occupancy toll lanes KW - High occupancy vehicle lanes KW - Workshops LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2017-11-01 SN - FHWA-HOP-18-015 TI - Lessons Learned from Regional Congestion Pricing Workshops (RCPWs) M3 - Tech Report N1 - United States N1 - DTFH61-12-D-00046 N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87998 ER -
Update to ARDOT Superpave Gyratory Compaction (SGC) Specification to Increase Pavement Durability

Braham, Andrew ;

Hall, Kevin

2025-06-01 | PDF

The primary goal ofTRC2201 was to enhance the durability of asphalt pavements in Arkansas. This was accomplished through two steps: exploring extreme scenarios with lab mixtures and comparing eight field sites. Further analysis was conducted using Pavement ME and a life-cycle cost analysis. In the extreme scenario, air voids decreased as Pb and N l ...

12/01/2025

Title : Update to ARDOT Superpave Gyratory Compaction (SGC) Specification to Increase Pavement Durability Creator(s) : Braham, Andrew;Hall, Kevin;Ansari, M Tahir;Tiwari, Amarjeet; Corporate Creator(s) : University of Arkansas, Fayetteville Corporate Contributor(s) : Arkansas. Department of Transportation Published Date : 2025-06-01 Report Number : TRC2201 URL : https://rosap.ntl.bts.gov/view/dot/87997 Braham, Andrew et al. (2025). Update to ARDOT Superpave Gyratory Compaction (SGC) Specification to Increase Pavement Durability. Braham, Andrew et al. "Update to ARDOT Superpave Gyratory Compaction (SGC) Specification to Increase Pavement Durability" (2025) Braham, Andrew et al. "Update to ARDOT Superpave Gyratory Compaction (SGC) Specification to Increase Pavement Durability" , 2025 Export RIS Citation Information. TY - Tech Report AU - Braham, Andrew AU - Hall, Kevin AU - Ansari, M Tahir AU - Tiwari, Amarjeet A2 - University of Arkansas, Fayetteville A3 - Arkansas. Department of Transportation AB - The primary goal ofTRC2201 was to enhance the durability of asphalt pavements in Arkansas. This was accomplished through two steps: exploring extreme scenarios with lab mixtures and comparing eight field sites. Further analysis was conducted using Pavement ME and a life-cycle cost analysis. In the extreme scenario, air voids decreased as Pb and N levels increased; CTindex increased with rising Pb levels, but AP A rut depth results were inconsistent. Additional testing with moisture damage indicated that mixtures that performed well in IDEAL-CT and AP A tests still showed poor resistance to moisture damage. For the eight field projects, lab-mixed samples exhibited slightly better crack resistance at lower values, while plant-mixed samples performed slightly better at higher values. No consistent trend in APA rut depth was observed between lab- and field-produced samples. Additional performance tests indicated that some of the BMD mixtures could be susceptible to rutting with the additional asphalt binder content, and field validation of AP A minimum values should be conducted for these eight projects. Pavement ME analysis revealed that, except for thermal cracking, standard Superpave mixtures performed similarly to the BMD mixtures, with thermal cracking occurring after only 5 years. Using this criterion, adding an extra 0.5% asphalt binder would result in approximately 61 % savings over a 20-year period. AN - dot:87997 ET - Final Report, March 28, 2022 - June 30, 2025 KW - Asphalt pavements KW - Durability KW - Hot mix asphalt KW - Mix design KW - Pavement performance KW - Rutting KW - Superpave KW - Life cycle costing KW - IDEAL-CT KW - APA LA - English PB - Arkansas. Department of Transportation PY - 2025-06-01 SN - TRC2201 TI - Update to ARDOT Superpave Gyratory Compaction (SGC) Specification to Increase Pavement Durability M3 - Tech Report N1 - United States N1 - TRC2201 UR - https://rosap.ntl.bts.gov/view/dot/87997 ER -
Influence of Operations Strategies on Third Performance Management Rulemaking (PM3) and Other Travel Time-Based Measures Primer Part Two — Nonrecurring Congestion Strategies

Margiotta, Richard A. ;

Kocher, Eric

2024-09-01 | PDF

The purpose of this Primer is to apply an evaluation methodology previously developed by the Federal Highway Administration to six real-world case studies, and to provide examples for successful application of the methodology and highlight relationships to third performance management rulemaking measures. The methodology uses empirical data to trac ...

12/01/2025

Title : Influence of Operations Strategies on Third Performance Management Rulemaking (PM3) and Other Travel Time-Based Measures Primer Part Two — Nonrecurring Congestion Strategies Creator(s) : Margiotta, Richard A.;Kocher, Eric;Dale, Jeff;Burgess, Lisa; Corporate Creator(s) : Cambridge Systematics, Inc. Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Contributor(s) : Taylor, Rich Published Date : 2024-09-01 Report Number : FHWA-HOP-23-060 URL : https://rosap.ntl.bts.gov/view/dot/87996 Margiotta, Richard A. et al. (2024). Influence of Operations Strategies on Third Performance Management Rulemaking (PM3) and Other Travel Time-Based Measures Primer Part Two — Nonrecurring Congestion Strategies. Margiotta, Richard A. et al. "Influence of Operations Strategies on Third Performance Management Rulemaking (PM3) and Other Travel Time-Based Measures Primer Part Two — Nonrecurring Congestion Strategies" (2024) Margiotta, Richard A. et al. "Influence of Operations Strategies on Third Performance Management Rulemaking (PM3) and Other Travel Time-Based Measures Primer Part Two — Nonrecurring Congestion Strategies" , 2024 Export RIS Citation Information. TY - Tech Report AU - Margiotta, Richard A. AU - Kocher, Eric AU - Dale, Jeff AU - Burgess, Lisa A2 - Cambridge Systematics, Inc. A3 - United States. Department of Transportation. Federal Highway Administration. Office of Operations A4 - Taylor, Rich A4 - Taylor, Rich AB - The purpose of this Primer is to apply an evaluation methodology previously developed by the Federal Highway Administration to six real-world case studies, and to provide examples for successful application of the methodology and highlight relationships to third performance management rulemaking measures. The methodology uses empirical data to track changes in travel times, as well as influencing factors: incidents, weather, and demand. The six case studies include two that address incident management; three that address adverse environmental events (snow and ice storms, dust storms, and rain); and one that addresses work zone management. Where indicated, traffic modeling was used to control for large variations in the influencing factors. Application of the methodology to six case studies revealed that, for the type of nonrecurring strategies implemented, little change in performance was observed using the empirical approach. The reason for this condition is that, by definition, nonrecurring strategies are narrowly focused on infrequent disruption events. In contrast, strategies that deal with recurring congestion will have an effect just about every day. As a result, travel time-based performance measures that accrue over an entire year may not be able to detect the infrequent effect of these strategies. Also, the effect of confounding by influencing factors for congestion—demand, crashes, and weather events—could mask the changes. To address this issue, modeling was used to hold these influencing factors constant for the before and after periods. Three of the case studies were used as examples and showed a highly positive net present value when the modeling results were obtained. AN - dot:87996 KW - Traffic congestion KW - Operations KW - Evaluation KW - Performance measurement KW - Transportation system management KW - Transportation operations KW - Strategic planning LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2024-09-01 SN - FHWA-HOP-23-060 TI - Influence of Operations Strategies on Third Performance Management Rulemaking (PM3) and Other Travel Time-Based Measures Primer Part Two — Nonrecurring Congestion Strategies M3 - Tech Report N1 - United States N1 - DTFH61-16-D-00051 N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87996 ER -
Influence of Operations Strategies on Third Performance Management Rulemaking (PM3) and Other Travel Time-Based Measures Primer Part One Recurring Congestion Strategies

Margiotta, Richard A. ;

Hallenbeck, Mark E.

2024-11-01 | PDF

The purpose of this Primer is to: 1) summarize previous methods used to evaluate operations strategies, 2) document the recurring congestion operational strategy implementation evaluation methodology developed for the project, including the performance measures needed to characterize benefits and costs and how to relate to third performance managem ...

12/01/2025

Title : Influence of Operations Strategies on Third Performance Management Rulemaking (PM3) and Other Travel Time-Based Measures Primer Part One Recurring Congestion Strategies Creator(s) : Margiotta, Richard A.;Hallenbeck, Mark E.;Bullock, Darcy;Kulathintekizhakethil, Mathew J.; Corporate Creator(s) : Cambridge Systematics, Inc. Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Contributor(s) : Taylor, Rich Published Date : 2024-11-01 Report Number : FHWA-HOP-24-001 URL : https://rosap.ntl.bts.gov/view/dot/87995 Margiotta, Richard A. et al. (2024). Influence of Operations Strategies on Third Performance Management Rulemaking (PM3) and Other Travel Time-Based Measures Primer Part One Recurring Congestion Strategies. Margiotta, Richard A. et al. "Influence of Operations Strategies on Third Performance Management Rulemaking (PM3) and Other Travel Time-Based Measures Primer Part One Recurring Congestion Strategies" (2024) Margiotta, Richard A. et al. "Influence of Operations Strategies on Third Performance Management Rulemaking (PM3) and Other Travel Time-Based Measures Primer Part One Recurring Congestion Strategies" , 2024 Export RIS Citation Information. TY - Tech Report AU - Margiotta, Richard A. AU - Hallenbeck, Mark E. AU - Bullock, Darcy AU - Kulathintekizhakethil, Mathew J. A2 - Cambridge Systematics, Inc. A3 - United States. Department of Transportation. Federal Highway Administration. Office of Operations A4 - Taylor, Rich A4 - Taylor, Rich AB - The purpose of this Primer is to: 1) summarize previous methods used to evaluate operations strategies, 2) document the recurring congestion operational strategy implementation evaluation methodology developed for the project, including the performance measures needed to characterize benefits and costs and how to relate to third performance management rule (PM3) measures; 3) report the results of the seven real-world evaluations conducted with the methodology; and 4) provide examples for successful application of the methodology and highlight their relationship to PM3 measures. The methodology uses empirical data to track changes in travel times and influencing factors: incidents, weather, and demand. Where indicated, traffic modeling is used to control large variations in the influencing factors. Application of the methodology to seven case studies revealed that six cases achieved a notable improvement in performance; in the seventh case, congestion in the "before" period was marginal, so little change was noted. Depending on the conditions of each case, the PM3 measures will not always track with traditional congestion mobility measures. In several instances, traditional measures showed a performance improvement, but no improvement manifested in the PM3 measures for two reasons: (1) the binary nature of the PM3 measure (reliable/not reliable); and (2) components of the PM3 metric changing at different rates from the before period to the after period (e.g., the 50th and 80th percentile travel times in the level of travel time reliability metric). AN - dot:87995 KW - Traffic congestion KW - Operations KW - Evaluation KW - Performance measurement KW - Transportation system management KW - Transportation operations KW - Strategic planning LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2024-11-01 SN - FHWA-HOP-24-001 TI - Influence of Operations Strategies on Third Performance Management Rulemaking (PM3) and Other Travel Time-Based Measures Primer Part One Recurring Congestion Strategies M3 - Tech Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87995 ER -
Evaluating the Virginia Department of Transportation’s Potential Use of Electric Pickup Trucks Using Field Test Data [supplemental file]

Virginia Transportation Research Council (VTRC)

2025-11-01 | XLSX

This Excel Spreadsheet contains the Electric Vehicle Decision Support Tool: The life cycle cost analysis tool allows for a life cycle cost analysis comparison of multiple vehicles, including electric vehicles (EV), hybrid electric vehicles (HEV), and internal combustion engine vehicles (ICEV). The tool requires inputs about how the vehicle will be ...

12/01/2025

Supporting Files

Title : Evaluating the Virginia Department of Transportation’s Potential Use of Electric Pickup Trucks Using Field Test Data [supplemental file] Corporate Creator(s) : Virginia Transportation Research Council (VTRC) Corporate Contributor(s) : Virginia. Department of Transportation;United States. Department of Transportation. Federal Highway Administration; Published Date : 2025-11-01 Report Number : FHWA/VTRC 26-R24 URL : https://rosap.ntl.bts.gov/view/dot/87994 Virginia Transportation Research Council (VTRC) (2025). Evaluating the Virginia Department of Transportation’s Potential Use of Electric Pickup Trucks Using Field Test Data [supplemental file]. Virginia Transportation Research Council (VTRC) "Evaluating the Virginia Department of Transportation’s Potential Use of Electric Pickup Trucks Using Field Test Data [supplemental file]" (2025) Virginia Transportation Research Council (VTRC) "Evaluating the Virginia Department of Transportation’s Potential Use of Electric Pickup Trucks Using Field Test Data [supplemental file]" , 2025 Export RIS Citation Information. TY - Other A2 - Virginia Transportation Research Council (VTRC) A3 - Virginia. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - This Excel Spreadsheet contains the Electric Vehicle Decision Support Tool: The life cycle cost analysis tool allows for a life cycle cost analysis comparison of multiple vehicles, including electric vehicles (EV), hybrid electric vehicles (HEV), and internal combustion engine vehicles (ICEV). The tool requires inputs about how the vehicle will be used (how long the vehicle will be in service and annual mileage). Additionally, the tool requests user inputs about current and local energy costs (for EVs) and fuel costs (for HEVs and ICEVs). The current set up of the tool allows for comparison of an EV (column C), a custom EV (column D), an HEV/ICEV (column G), or a custom HEV/ICEV (custom H). AN - dot:87994 KW - Electric vehicle charging KW - Electric vehicles KW - Feasibility analysis KW - Field tests KW - Pickup trucks KW - Vehicle fleets KW - Range (Vehicles) KW - Life cycle analysis LA - English PB - Virginia Transportation Research Council (VTRC) PY - 2025-11-01 SN - FHWA/VTRC 26-R24 TI - Evaluating the Virginia Department of Transportation’s Potential Use of Electric Pickup Trucks Using Field Test Data [supplemental file] M3 - Other N1 - United States N1 - 126330 UR - https://rosap.ntl.bts.gov/view/dot/87994 ER -
Evaluating the Virginia Department of Transportation’s Potential Use of Electric Pickup Trucks Using Field Test Data

Goodall, Noah J. ;

Robartes, Erin M

2025-11-01 | PDF

In December 2022, the Virginia Transportation Research Council completed the technical assistance report, Potential for Electrification of the VDOT Vehicle Fleet, which investigated how electric trucks might integrate into the Virginia Department of Transportation’s (VDOT) fleet. That study was based on daily mileages of a sample of VDOT’s current ...

12/01/2025

Title : Evaluating the Virginia Department of Transportation’s Potential Use of Electric Pickup Trucks Using Field Test Data Creator(s) : Goodall, Noah J.;Robartes, Erin M; Corporate Creator(s) : Virginia Transportation Research Council (VTRC) Corporate Contributor(s) : Virginia. Department of Transportation;United States. Department of Transportation. Federal Highway Administration; Published Date : 2025-11-01 Report Number : FHWA/VTRC 26-R24 URL : https://rosap.ntl.bts.gov/view/dot/87993 Goodall, Noah J. and Robartes, Erin M (2025). Evaluating the Virginia Department of Transportation’s Potential Use of Electric Pickup Trucks Using Field Test Data. Goodall, Noah J. and Robartes, Erin M "Evaluating the Virginia Department of Transportation’s Potential Use of Electric Pickup Trucks Using Field Test Data" (2025) Goodall, Noah J. and Robartes, Erin M "Evaluating the Virginia Department of Transportation’s Potential Use of Electric Pickup Trucks Using Field Test Data" , 2025 Export RIS Citation Information. TY - Tech Report AU - Goodall, Noah J. AU - Robartes, Erin M A2 - Virginia Transportation Research Council (VTRC) A3 - Virginia. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - In December 2022, the Virginia Transportation Research Council completed the technical assistance report, Potential for Electrification of the VDOT Vehicle Fleet, which investigated how electric trucks might integrate into the Virginia Department of Transportation’s (VDOT) fleet. That study was based on daily mileages of a sample of VDOT’s current internal combustion engine pickup truck fleet and manufacturer-supplied ranges of the Ford F-150 Lightning electric trucks. This current project builds on that previous effort by (1) field testing the range, charging, and general capabilities of the electric truck and its associated charging infrastructure and (2) capturing the experiences of VDOT field staff when using the vehicle. Field testing revealed that the electric truck performed consistently with manufacturer estimates under standard driving conditions but experienced significant range reductions during towing operations (50–70% decrease) and cold weather conditions (energy consumption of 4.1 miles per hour equivalent during winter idling). The vehicle demonstrated good suitability for local maintenance operations, with accurate range estimation and effective performance during low-speed work zone operations. Based on these findings, the study recommends that VDOT’s Maintenance Division initiate a pilot electric vehicle deployment that prioritizes electric sport utility vehicles and sedans at selected facilities. The operational limitations observed in electric pickup trucks during towing and cold weather operations indicate that electric sport utility vehicles and sedans can provide similar fuel and maintenance cost benefits without these constraints because they are typically not required for heavy towing or 24-hour, around-the-clock emergency operations that characterize many pickup truck applications. The refined Electric Vehicle Decision Support Tool developed from field test data can guide optimal deployment decisions, with properly deployed electric trucks providing potential annual savings of $1,400 per vehicle compared with conventional pickup trucks through reduced fuel and maintenance costs. Supplemental materials can be found at https://library.vdot.virginia.gov/vtrc/supplements. AN - dot:87993 ET - Final Report KW - Electric vehicle charging KW - Electric vehicles KW - Feasibility analysis KW - Field tests KW - Pickup trucks KW - Vehicle fleets KW - Range (Vehicles) LA - English PB - Virginia Transportation Research Council (VTRC) PY - 2025-11-01 SN - FHWA/VTRC 26-R24 TI - Evaluating the Virginia Department of Transportation’s Potential Use of Electric Pickup Trucks Using Field Test Data M3 - Tech Report N1 - United States N1 - 126330 UR - https://rosap.ntl.bts.gov/view/dot/87993 ER -
2018 Urban Congestion Trends: Improving Operations, Improving Performance

United States. Department of Transportation. Federal Highway Administration

2019-01-01 | PDF

FHWA's Office of Operations has released several national reports to communicate recent trends in congestion as well as strategies to manage congestion and improve mobility. These reports provide an annual snapshot of congestion in the United States by summarizing recent trends in congestion, highlighting the role of travel time reliability in the ...

12/01/2025

Title : 2018 Urban Congestion Trends: Improving Operations, Improving Performance Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2019-01-01 Report Number : FHWA-HOP-19-026 URL : https://rosap.ntl.bts.gov/view/dot/87992 United States. Department of Transportation. Federal Highway Administration (2019). 2018 Urban Congestion Trends: Improving Operations, Improving Performance. United States. Department of Transportation. Federal Highway Administration "2018 Urban Congestion Trends: Improving Operations, Improving Performance" (2019) United States. Department of Transportation. Federal Highway Administration "2018 Urban Congestion Trends: Improving Operations, Improving Performance" , 2019 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - FHWA's Office of Operations has released several national reports to communicate recent trends in congestion as well as strategies to manage congestion and improve mobility. These reports provide an annual snapshot of congestion in the United States by summarizing recent trends in congestion, highlighting the role of travel time reliability in the effects of congestion, and describing efforts to reduce the growth of congestion. AN - dot:87992 KW - Traffic congestion KW - Metropolitan areas KW - Transportation planning KW - Trend (Statistics) KW - Reliability (Statistics) LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2019-01-01 SN - FHWA-HOP-19-026 TI - 2018 Urban Congestion Trends: Improving Operations, Improving Performance M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87992 ER -
2021 Urban Congestion Trends

United States. Department of Transportation. Federal Highway Administration

2022-01-01 | PDF

FHWA's Office of Operations has released several national reports to communicate recent trends in congestion as well as strategies to manage congestion and improve mobility. These reports provide an annual snapshot of congestion in the United States by summarizing recent trends in congestion, highlighting the role of travel time reliability in the ...

12/01/2025

Title : 2021 Urban Congestion Trends Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center Published Date : 2022-01-01 Report Number : FHWA-HOP-22-028 URL : https://rosap.ntl.bts.gov/view/dot/87991 United States. Department of Transportation. Federal Highway Administration (2022). 2021 Urban Congestion Trends. United States. Department of Transportation. Federal Highway Administration "2021 Urban Congestion Trends" (2022) United States. Department of Transportation. Federal Highway Administration "2021 Urban Congestion Trends" , 2022 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center AB - FHWA's Office of Operations has released several national reports to communicate recent trends in congestion as well as strategies to manage congestion and improve mobility. These reports provide an annual snapshot of congestion in the United States by summarizing recent trends in congestion, highlighting the role of travel time reliability in the effects of congestion, and describing efforts to reduce the growth of congestion. AN - dot:87991 KW - Traffic congestion KW - Metropolitan areas KW - Transportation planning KW - Trend (Statistics) KW - Reliability (Statistics) LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2022-01-01 SN - FHWA-HOP-22-028 TI - 2021 Urban Congestion Trends M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87991 ER -
TxDOT Wetland Mitigation Alternatives: Options and Procedures for In-Kind Mitigation

Teal, Michael (Mike) ;

Johnston, Elizabeth

2004-09-01 | PDF

An increasing number of Texas Department of Transportation (TxDOT) projects are requiring mitigation of wetland impacts. Many of these sites are very small, which can be very difficult and expensive to develop with no real assurance of success. There is considerable statewide concern and nationally documented evidence that, even using the best avai ...

12/01/2025

Title : TxDOT Wetland Mitigation Alternatives: Options and Procedures for In-Kind Mitigation Creator(s) : Teal, Michael (Mike);Johnston, Elizabeth; Corporate Creator(s) : Texas A&M University System. Texas Transportation Institute Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office;United States. Department of Transportation. Federal Highway Administration; Published Date : 2004-09-01 Report Number : FHWA/TX-05/0-4545-1 URL : https://rosap.ntl.bts.gov/view/dot/87990 Teal, Michael (Mike) and Johnston, Elizabeth (2004). TxDOT Wetland Mitigation Alternatives: Options and Procedures for In-Kind Mitigation. Teal, Michael (Mike) and Johnston, Elizabeth "TxDOT Wetland Mitigation Alternatives: Options and Procedures for In-Kind Mitigation" (2004) Teal, Michael (Mike) and Johnston, Elizabeth "TxDOT Wetland Mitigation Alternatives: Options and Procedures for In-Kind Mitigation" , 2004 Export RIS Citation Information. TY - Tech Report AU - Teal, Michael (Mike) AU - Johnston, Elizabeth A2 - Texas A&M University System. Texas Transportation Institute A3 - Texas Department of Transportation. Research and Technology Implementation Office A3 - United States. Department of Transportation. Federal Highway Administration AB - An increasing number of Texas Department of Transportation (TxDOT) projects are requiring mitigation of wetland impacts. Many of these sites are very small, which can be very difficult and expensive to develop with no real assurance of success. There is considerable statewide concern and nationally documented evidence that, even using the best available knowledge and care, many mitigation efforts are relatively unsuccessful. Several other states have already adopted alternatives to in-kind wetland mitigation such as commercial banking, inter-agency agreements, in lieu fee, and so forth. This project examines the wetland mitigation efforts and needs of TxDOT, the regulatory framework that governs wetland mitigation in the state, evaluates alternatives to in-kind mitigation, and develops alternatives and a strategy for implementation of alternatives to current practice. AN - dot:87990 ET - September 2003- August 2004 KW - Alternatives analysis KW - Interagency relations KW - Regulations KW - Strategic planning KW - Wetland conservation LA - English PB - Texas. Department of Transportation PY - 2004-09-01 SN - FHWA/TX-05/0-4545-1 TI - TxDOT Wetland Mitigation Alternatives: Options and Procedures for In-Kind Mitigation M3 - Tech Report N1 - United States N1 - 0-4545 UR - https://rosap.ntl.bts.gov/view/dot/87990 ER -
Design Procedure for Pavements on Expansive Soils: Volume 3

Lytton, Robert L. ;

Aubeny, Charles P.

2005-06-01 | PDF

Swelling and shrinkage of subgrade soils are critical factors contributing to increases in roughness and degradation of serviceability of highway pavements. Existing procedures for predicting swell are largely based on the potential vertical rise (PVR) procedure developed by McDowell in 1956. While the PVR procedure represents a major development i ...

12/01/2025

Title : Design Procedure for Pavements on Expansive Soils: Volume 3 Creator(s) : Lytton, Robert L.;Aubeny, Charles P.;Bulut, Rifat; Corporate Creator(s) : Texas A&M University System. Texas Transportation Institute Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office;United States. Department of Transportation. Federal Highway Administration; Published Date : 2005-06-01 Report Number : FHWA/TX-05/0-4518-1-Vol. 3 URL : https://rosap.ntl.bts.gov/view/dot/87989 Lytton, Robert L. et al. (2005). Design Procedure for Pavements on Expansive Soils: Volume 3. Lytton, Robert L. and Aubeny, Charles P. and Bulut, Rifat "Design Procedure for Pavements on Expansive Soils: Volume 3" (2005) Lytton, Robert L. et al. "Design Procedure for Pavements on Expansive Soils: Volume 3" , 2005 Export RIS Citation Information. TY - Tech Report AU - Lytton, Robert L. AU - Aubeny, Charles P. AU - Bulut, Rifat A2 - Texas A&M University System. Texas Transportation Institute A3 - Texas Department of Transportation. Research and Technology Implementation Office A3 - United States. Department of Transportation. Federal Highway Administration AB - Swelling and shrinkage of subgrade soils are critical factors contributing to increases in roughness and degradation of serviceability of highway pavements. Existing procedures for predicting swell are largely based on the potential vertical rise (PVR) procedure developed by McDowell in 1956. While the PVR procedure represents a major development in the design of pavements on expansive soils, instances of apparently over-conservative PVR predictions have led some designers to suggest revision or replacement of the existing procedure. This project reviews the basic assumptions of the existing PVR procedure and identifies the likely sources of the questionable predictions that have arisen in the past. An alternative procedure is presented that features rigorous modeling of both the moisture diffusion process that induces changes in suction within a soil mass and the deformations that occur in response to changes in suction. This alternative procedure includes provisions for measuring and/or estimating soil and environmental input parameters necessary for the predictions. A procedure for predicting the impact of soil deformations on pavement performance is also presented. The proposed procedure is applied to three study sections involving Texas roadways on expansive soils, and parametric studies are presented evaluating the effectiveness of various design measures including moisture barriers, lime treatment, and replacement of in situ sub-grade soils with “inert” soils. AN - dot:87989 ET - September 2002- August 2004 KW - Calcium oxide KW - Moisture barriers KW - Parametric analysis KW - Pavement design KW - Pavement performance KW - Roughness KW - Serviceability KW - Soil mechanics KW - Soil suction KW - Subgrade (Pavements) KW - Swelling soils LA - English PB - Texas. Department of Transportation PY - 2005-06-01 SN - FHWA/TX-05/0-4518-1-Vol. 3 TI - Design Procedure for Pavements on Expansive Soils: Volume 3 M3 - Tech Report N1 - United States N1 - 0-4518 UR - https://rosap.ntl.bts.gov/view/dot/87989 ER -
Design Procedure for Pavements on Expansive Soils: Volume 2

Lytton, Robert L. ;

Aubeny, Charles P.

2006-05-01 | PDF

Swelling and shrinkage of subgrade soils are critical factors contributing to increases in roughness and degradation of serviceability of highway pavements. Existing procedures for predicting swell are largely based on the potential vertical rise (PVR) procedure developed by McDowell in 1956. While the PVR procedure represents a major development i ...

12/01/2025

Title : Design Procedure for Pavements on Expansive Soils: Volume 2 Creator(s) : Lytton, Robert L.;Aubeny, Charles P.;Bulut, Rifat; Corporate Creator(s) : Texas A&M University. Texas Transportation Institute Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office;United States. Department of Transportation. Federal Highway Administration; Published Date : 2006-05-01 Report Number : FHWA/TX-05/0-4518-1 Vol. 2 URL : https://rosap.ntl.bts.gov/view/dot/87988 Lytton, Robert L. et al. (2006). Design Procedure for Pavements on Expansive Soils: Volume 2. Lytton, Robert L. and Aubeny, Charles P. and Bulut, Rifat "Design Procedure for Pavements on Expansive Soils: Volume 2" (2006) Lytton, Robert L. et al. "Design Procedure for Pavements on Expansive Soils: Volume 2" , 2006 Export RIS Citation Information. TY - Tech Report AU - Lytton, Robert L. AU - Aubeny, Charles P. AU - Bulut, Rifat A2 - Texas A&M University. Texas Transportation Institute A3 - Texas Department of Transportation. Research and Technology Implementation Office A3 - United States. Department of Transportation. Federal Highway Administration AB - Swelling and shrinkage of subgrade soils are critical factors contributing to increases in roughness and degradation of serviceability of highway pavements. Existing procedures for predicting swell are largely based on the potential vertical rise (PVR) procedure developed by McDowell in 1956. While the PVR procedure represents a major development in the design of pavements on expansive soils, instances of apparently over-conservative PVR predictions have led some designers to suggest revision or replacement of the existing procedure. This project reviews the basic assumptions of the existing PVR procedure and identifies the likely sources of the questionable predictions that have arisen in the past. An alternative procedure is presented that features rigorous modeling of both the moisture diffusion process that induces changes in suction within a soil mass and the deformations that occur in response to changes in suction. This alternative procedure includes provisions for measuring and/or estimating soil and environmental input parameters necessary for the predictions. A procedure for predicting the impact of soil deformations on pavement performance is also presented. The proposed procedure is applied to three study sections involving Texas roadways on expansive soils, and parametric studies are presented evaluating the effectiveness of various design measures including moisture barriers, lime treatment, and replacement of in situ sub-grade soils with “inert” soils. AN - dot:87988 ET - September 2002 - August 2004 KW - Calcium oxide KW - Moisture barriers KW - Parametric analysis KW - Pavement design KW - Pavement performance KW - Roughness KW - Serviceability KW - Soil mechanics KW - Soil suction KW - Subgrade (Pavements) KW - Swelling soils LA - English PB - Texas. Department of Transportation PY - 2006-05-01 SN - FHWA/TX-05/0-4518-1 Vol. 2 TI - Design Procedure for Pavements on Expansive Soils: Volume 2 M3 - Tech Report N1 - United States N1 - 0-4518 UR - https://rosap.ntl.bts.gov/view/dot/87988 ER -
Design Procedure for Pavements on Expansive Soils: Volume 1

Lytton, Robert L. ;

Aubeny, Charles P.

2005-08-01 | PDF

Swelling and shrinkage of subgrade soils are critical factors contributing to increases in roughness and degradation of serviceability of highway pavements. Existing procedures for predicting swell are largely based on the potential vertical rise (PVR) procedure developed by McDowell in 1956. While the PVR procedure represents a major development i ...

12/01/2025

Title : Design Procedure for Pavements on Expansive Soils: Volume 1 Creator(s) : Lytton, Robert L.;Aubeny, Charles P.;Bulut, Rifat; Corporate Creator(s) : Texas A&M University. Texas Transportation Institute Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office;United States. Department of Transportation. Federal Highway Administration; Published Date : 2005-08-01 Report Number : FHWA/TX-05/0-4518-1 Vol. 1 URL : https://rosap.ntl.bts.gov/view/dot/87987 Lytton, Robert L. et al. (2005). Design Procedure for Pavements on Expansive Soils: Volume 1. Lytton, Robert L. and Aubeny, Charles P. and Bulut, Rifat "Design Procedure for Pavements on Expansive Soils: Volume 1" (2005) Lytton, Robert L. et al. "Design Procedure for Pavements on Expansive Soils: Volume 1" , 2005 Export RIS Citation Information. TY - Tech Report AU - Lytton, Robert L. AU - Aubeny, Charles P. AU - Bulut, Rifat A2 - Texas A&M University. Texas Transportation Institute A3 - Texas Department of Transportation. Research and Technology Implementation Office A3 - United States. Department of Transportation. Federal Highway Administration AB - Swelling and shrinkage of subgrade soils are critical factors contributing to increases in roughness and degradation of serviceability of highway pavements. Existing procedures for predicting swell are largely based on the potential vertical rise (PVR) procedure developed by McDowell in 1956. While the PVR procedure represents a major development in the design of pavements on expansive soils, instances of apparently over-conservative PVR predictions have led some designers to suggest revision or replacement of the existing procedures. This project reviews the basic assumption of the existing PVR procedure and identifies the likely sources of the questionable predictions that have arisen in the past. An alternative procedure is presented that features rigorous modeling of both the moisture diffusion process that induces changes in suction within a soil mass and the deformations that occur in response to changes in suction. This alternative procedure includes provisions for measuring and/or estimating soil and environmental input parameters necessary for the predictions. A procedure for predicting the impact of soil deformations on pavement performance is also presented. The proposed procedure is applied to three study sections involving Texas roadways on expansive soils, and parametric studies are presented evaluating the effectiveness of various design measures including moisture barriers, lime treatment, and replacement of in situ subgrade soils with "inert" soils. AN - dot:87987 ET - September 2002 - August 2004 KW - Calcium oxide KW - Moisture barriers KW - Parametric analysis KW - Pavement design KW - Pavement performance KW - Roughness KW - Serviceability KW - Soil mechanics KW - Soil suction KW - Subgrade (Pavements) KW - Swelling soils LA - English PB - Texas. Department of Transportation PY - 2005-08-01 SN - FHWA/TX-05/0-4518-1 Vol. 1 TI - Design Procedure for Pavements on Expansive Soils: Volume 1 M3 - Tech Report N1 - United States N1 - 0-4518 UR - https://rosap.ntl.bts.gov/view/dot/87987 ER -
A Comparison of Service Life Models for Concrete Corrosion Durability

Khan, Zafrul H. ;

Alhasan, Ahmad

2023-12-01 | PDF

This study compares the service life models of concrete structures against chloride-induced corrosion. Empirical, stochastic, and mechanistic-based service life models were studied. Two popular mechanistic service life models, Life-365 and fib Bulletin 34, were further evaluated. From the design of experiment and statistical analysis, the important ...

12/01/2025

Title : A Comparison of Service Life Models for Concrete Corrosion Durability Creator(s) : Khan, Zafrul H.;Alhasan, Ahmad; Corporate Creator(s) : Applied Research Associates, Inc. Corporate Contributor(s) : Florida. Department of Transportation Published Date : 2023-12-01 URL : https://rosap.ntl.bts.gov/view/dot/87986 Khan, Zafrul H. and Alhasan, Ahmad (2023). A Comparison of Service Life Models for Concrete Corrosion Durability. Khan, Zafrul H. and Alhasan, Ahmad "A Comparison of Service Life Models for Concrete Corrosion Durability" (2023) Khan, Zafrul H. and Alhasan, Ahmad "A Comparison of Service Life Models for Concrete Corrosion Durability" , 2023 Export RIS Citation Information. TY - Tech Report AU - Khan, Zafrul H. AU - Alhasan, Ahmad A2 - Applied Research Associates, Inc. A3 - Florida. Department of Transportation AB - This study compares the service life models of concrete structures against chloride-induced corrosion. Empirical, stochastic, and mechanistic-based service life models were studied. Two popular mechanistic service life models, Life-365 and fib Bulletin 34, were further evaluated. From the design of experiment and statistical analysis, the important parameters from highest to least importance were found to be diffusion coefficient, concrete cover, aging exponent, surface chloride concentration, and temperature based on the conditions in Florida. This study recommends the fib-34-Bulletin-based model for service life modeling of concrete structures against chloride-induced corrosion due to its inherent ability to consider the associated uncertainties. These uncertainties can arise from adopting simplified models or the unavailability of reliable data. Deterministic service life prediction using Life-365 is a better choice if the user is confident about the field observations and knows the input parameters with a significant degree of certainty. In addition, this study also provided suggestions and recommendations regarding the input parameters for the fib-34-Bulletin-based model. AN - dot:87986 ET - June 2023 -December 2023 KW - Corrosion KW - Chloride content KW - Service life KW - Structural models KW - Durability LA - English PB - Florida. Department of Transportation PY - 2023-12-01 TI - A Comparison of Service Life Models for Concrete Corrosion Durability M3 - Tech Report N1 - United States N1 - BED49-977-08 UR - https://rosap.ntl.bts.gov/view/dot/87986 ER -
A Comparison of Service Life Models for Concrete Corrosion Durability [Summary]

Antunes, Rodrigo ;

Alhasan, Ahmad

2025-08-01 | PDF

The objective of this project was to evaluate and compare different models used to predict the service life of concrete structures under the risk of chloride-induced corrosion and identify the most suitable model for FDOT. The project also sought to recommend appropriate input parameters for the selected model, considering Florida’s unique environm ...

12/01/2025

Title : A Comparison of Service Life Models for Concrete Corrosion Durability [Summary] Creator(s) : Antunes, Rodrigo;Alhasan, Ahmad; Corporate Creator(s) : Applied Research Associates, Inc. Corporate Contributor(s) : Florida. Department of Transportation. Research Center Published Date : 2025-08-01 Report Number : 9-977-08 URL : https://rosap.ntl.bts.gov/view/dot/87985 Antunes, Rodrigo and Alhasan, Ahmad (2025). A Comparison of Service Life Models for Concrete Corrosion Durability [Summary]. Antunes, Rodrigo and Alhasan, Ahmad "A Comparison of Service Life Models for Concrete Corrosion Durability [Summary]" (2025) Antunes, Rodrigo and Alhasan, Ahmad "A Comparison of Service Life Models for Concrete Corrosion Durability [Summary]" , 2025 Export RIS Citation Information. TY - Brief AU - Antunes, Rodrigo AU - Alhasan, Ahmad A2 - Applied Research Associates, Inc. A3 - Florida. Department of Transportation. Research Center AB - The objective of this project was to evaluate and compare different models used to predict the service life of concrete structures under the risk of chloride-induced corrosion and identify the most suitable model for FDOT. The project also sought to recommend appropriate input parameters for the selected model, considering Florida’s unique environmental conditions and materials commonly used in the State’s infrastructure. AN - dot:87985 ET - Summary Report KW - Corrosion KW - Chloride content KW - Concrete KW - Service life KW - Structural models KW - Durability LA - English PB - Florida. Department of Transportation. Research Center PY - 2025-08-01 SN - 9-977-08 TI - A Comparison of Service Life Models for Concrete Corrosion Durability [Summary] M3 - Brief N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/87985 ER -
Seattle SMART Grant Digital Commercial Vehicle Permit Project [Data Management Plan]

Gallagher, Sarah

;

Hamlin, Brian

2025-11-17 | PDF

The Seattle SMART Grant Digital Commercial Vehicle Permit Project advanced work to provide reliable, modern curb access for commercial delivery vehicles using a collaborative, data driven approach. Short-term goals were to engage with local businesses and commercial delivery users with a Seattle Department of Transportation (SDOT) issued decal to p ...

12/01/2025

Title : Seattle SMART Grant Digital Commercial Vehicle Permit Project [Data Management Plan] Creator(s) : Gallagher, Sarah;Hamlin, Brian; Corporate Creator(s) : Seattle. Department of Transportation Corporate Contributor(s) : Strengthening Mobility and Revolutionizing Transportation (SMART) Program Contributor(s) : Agnihotri, Manu;Snyder, MaryCatherine; Published Date : 2025-11-17 DOI : https://doi.org/10.48321/D1A0BA7DC7 Gallagher, Sarah and Hamlin, Brian (2025). Seattle SMART Grant Digital Commercial Vehicle Permit Project [Data Management Plan]. https://doi.org/10.48321/D1A0BA7DC7 Gallagher, Sarah and Hamlin, Brian "Seattle SMART Grant Digital Commercial Vehicle Permit Project [Data Management Plan]" (2025), https://doi.org/10.48321/D1A0BA7DC7 Gallagher, Sarah and Hamlin, Brian "Seattle SMART Grant Digital Commercial Vehicle Permit Project [Data Management Plan]" , 2025, https://doi.org/10.48321/D1A0BA7DC7 Export RIS Citation Information. TY - Data Management Plan AU - Gallagher, Sarah AU - Hamlin, Brian A2 - Seattle. Department of Transportation A3 - Strengthening Mobility and Revolutionizing Transportation (SMART) Program A4 - Agnihotri, Manu A4 - Snyder, MaryCatherine A4 - Gallagher, Sarah AB - The Seattle SMART Grant Digital Commercial Vehicle Permit Project advanced work to provide reliable, modern curb access for commercial delivery vehicles using a collaborative, data driven approach. Short-term goals were to engage with local businesses and commercial delivery users with a Seattle Department of Transportation (SDOT) issued decal to prototype a new digital permit to make more efficient use of commercial vehicle load zones, automate payment for users, and provide usage data at the zones for City and public use. AB - The project collected baseline data, interacted with various stakeholders, prototyped a technology-driven curb management system with two vehicle detection sensors, and evaluated a digital permit in North Downtown. SDOT is also converting the areas curb data to the Curb Data Specification set by the Open Mobility Foundation. The University of Washington’s Urban Freight Lab led the project’s research by developing a technology assessment and existing commercial vehicle curbside utilization data collection plans, parking and pricing policy scenarios assessment, analysis of project results, and recommendations for building a digital permit on a scale citywide. AN - dot:87984 DO - https://doi.org/10.48321/D1A0BA7DC7 KW - Data management plans KW - Best practices KW - Curb side parking KW - Delivery service KW - Electronic commerce KW - Urban areas KW - Commercial drivers KW - Permits LA - English PB - Seattle. Department of Transportation PY - 2025-11-17 TI - Seattle SMART Grant Digital Commercial Vehicle Permit Project [Data Management Plan] M3 - Data Management Plan N1 - United States N1 - 69A3552341020 UR - https://rosap.ntl.bts.gov/view/dot/87984 ER -
Seattle SMART Grant Digital Commercial Vehicle Permit Project [supporting dataset]

Hamlin, Brian

;

Gallagher, Sarah

2025-11-01 | ZIP

The Seattle SMART Grant Digital Commercial Vehicle Permit Project advanced work to provide reliable, modern curb access for commercial delivery vehicles using a collaborative, data driven approach. Short-term goals were to engage with local businesses and commercial delivery users with a Seattle Department of Transportation (SDOT) issued decal to p ...

12/01/2025

Title : Seattle SMART Grant Digital Commercial Vehicle Permit Project [supporting dataset] Creator(s) : Hamlin, Brian;Gallagher, Sarah;Agnihotri, Manu;Snyder, MaryCatherine;Lyle-Beshai, Katie; Corporate Creator(s) : Seattle. Department of Transportation Corporate Contributor(s) : Strengthening Mobility and Revolutionizing Transportation (SMART) Program Published Date : 2025-11-01 DOI : https://zenodo.org/records/17081752 Hamlin, Brian et al. (2025). Seattle SMART Grant Digital Commercial Vehicle Permit Project [supporting dataset]. https://zenodo.org/records/17081752 Hamlin, Brian et al. "Seattle SMART Grant Digital Commercial Vehicle Permit Project [supporting dataset]" (2025), https://zenodo.org/records/17081752 Hamlin, Brian et al. "Seattle SMART Grant Digital Commercial Vehicle Permit Project [supporting dataset]" , 2025, https://zenodo.org/records/17081752 Export RIS Citation Information. TY - Dataset AU - Hamlin, Brian AU - Gallagher, Sarah AU - Agnihotri, Manu AU - Snyder, MaryCatherine AU - Lyle-Beshai, Katie A2 - Seattle. Department of Transportation A3 - Strengthening Mobility and Revolutionizing Transportation (SMART) Program AB - The Seattle SMART Grant Digital Commercial Vehicle Permit Project advanced work to provide reliable, modern curb access for commercial delivery vehicles using a collaborative, data driven approach. Short-term goals were to engage with local businesses and commercial delivery users with a Seattle Department of Transportation (SDOT) issued decal to prototype a new digital permit to make more efficient use of commercial vehicle load zones, automate payment for users, and provide usage data at the zones for City and public use. AB - The project collected baseline data, interacted with various stakeholders, prototyped a technology-driven curb management system with two vehicle detection sensors, and evaluated a digital permit in North Downtown. SDOT is also converting the areas curb data to the Curb Data Specification set by the Open Mobility Foundation. The University of Washington’s Urban Freight Lab led the project’s research by developing a technology assessment and existing commercial vehicle curbside utilization data collection plans, parking and pricing policy scenarios assessment, analysis of project results, and recommendations for building a digital permit on a scale citywide. AB - The total size of the ZIP file is 96,764 KB. AB - This item is made available under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) license https://creativecommons.org/licenses/by/4.0/. Use the following citation: Hamlin, B., Gallagher, S., Agnihotri, M., Snyder, M., & Lyle-Beshai, K. (2025). Seattle SMART Grant Digital Commercial Vehicle Permit Project [Data set]. Strengthening Mobility and Revolutionizing Transportation (SMART). https://doi.org/10.48321/D1A0BA7DC7 AN - dot:87983 DO - https://zenodo.org/records/17081752 KW - Best practices KW - Curb side parking KW - Delivery service KW - Electronic commerce KW - Urban areas KW - Commercial drivers KW - Permits KW - Data files LA - English PB - Seattle. Department of Transportation PY - 2025-11-01 TI - Seattle SMART Grant Digital Commercial Vehicle Permit Project [supporting dataset] M3 - Dataset N1 - United States N1 - 69A3552341020 N1 - Open Access; https://creativecommons.org/licenses/by/4.0/ UR - https://rosap.ntl.bts.gov/view/dot/87983 ER -
Last-Mile Freight Curb Access: Digitizing the Last-Mile of Urban Goods to Improve Curb Access and Utilization

Hamlin, Brian

;

Gallagher, Sarah

2025-11-24 | PDF

The Seattle SMART Grant Digital Commercial Vehicle Permit Project advanced work to provide reliable, modern curb access for commercial delivery vehicles using a collaborative, data driven approach. Short-term goals were to engage with local businesses and commercial delivery users with a Seattle Department of Transportation (SDOT) issued decal to p ...

12/01/2025

Title : Last-Mile Freight Curb Access: Digitizing the Last-Mile of Urban Goods to Improve Curb Access and Utilization Creator(s) : Hamlin, Brian;Gallagher, Sarah;Agnihotri, Manu;Snyder, MaryCatherine;Lyle-Beshai, Katie;Dalla Chiara, Giacomo;Galarza, Maura Stefanny Perez;Franco, Sage;Neubauer, Rick; Corporate Creator(s) : Seattle. Department of Transportation Corporate Contributor(s) : Strengthening Mobility and Revolutionizing Transportation (SMART) Program Published Date : 2025-11-24 DOI : https://doi.org/10.21949/s6wp-3419 Hamlin, Brian et al. (2025). Last-Mile Freight Curb Access: Digitizing the Last-Mile of Urban Goods to Improve Curb Access and Utilization. https://doi.org/10.21949/s6wp-3419 Hamlin, Brian et al. "Last-Mile Freight Curb Access: Digitizing the Last-Mile of Urban Goods to Improve Curb Access and Utilization" (2025), https://doi.org/10.21949/s6wp-3419 Hamlin, Brian et al. "Last-Mile Freight Curb Access: Digitizing the Last-Mile of Urban Goods to Improve Curb Access and Utilization" , 2025, https://doi.org/10.21949/s6wp-3419 Export RIS Citation Information. TY - Tech Report AU - Hamlin, Brian AU - Gallagher, Sarah AU - Agnihotri, Manu AU - Snyder, MaryCatherine AU - Lyle-Beshai, Katie AU - Dalla Chiara, Giacomo AU - Galarza, Maura Stefanny Perez AU - Franco, Sage AU - Neubauer, Rick A2 - Seattle. Department of Transportation A3 - Strengthening Mobility and Revolutionizing Transportation (SMART) Program AB - The Seattle SMART Grant Digital Commercial Vehicle Permit Project advanced work to provide reliable, modern curb access for commercial delivery vehicles using a collaborative, data driven approach. Short-term goals were to engage with local businesses and commercial delivery users with a Seattle Department of Transportation (SDOT) issued decal to prototype a new digital permit to make more efficient use of commercial vehicle load zones, automate payment for users, and provide usage data at the zones for City and public use. AB - The project collected baseline data, interacted with various stakeholders, prototyped a technology-driven curb management system with two vehicle detection sensors, and evaluated a digital permit in North Downtown. SDOT is also converting the areas curb data to the Curb Data Specification set by the Open Mobility Foundation. The University of Washington’s Urban Freight Lab led the project’s research by developing a technology assessment and existing commercial vehicle curbside utilization data collection plans, parking and pricing policy scenarios assessment, analysis of project results, and recommendations for building a digital permit on a scale citywide. AN - dot:87982 DO - https://doi.org/10.21949/s6wp-3419 ET - Final Report KW - Best practices KW - Curb side parking KW - Delivery service KW - Electronic commerce KW - Urban areas KW - Commercial drivers KW - Permits KW - Digital permit LA - English PB - Seattle. Department of Transportation PY - 2025-11-24 TI - Last-Mile Freight Curb Access: Digitizing the Last-Mile of Urban Goods to Improve Curb Access and Utilization M3 - Tech Report N1 - United States N1 - 69A3552341020 UR - https://rosap.ntl.bts.gov/view/dot/87982 ER -
Development of Autonomous Truck Mounted Attenuator (ATMA) Deployment Guidelines Considering Traffic and Safety Impacts

Hu, Xianbiao ;

Tang, Qing

2025-06-01 | PDF

The Autonomous Truck Mounted Attenuator (ATMA) system represents a specialized application of connected and autonomous vehicle (CAV) technologies, designed to enhance worker safety during roadway maintenance operations. Despite its growing adoption across state agencies, formalized deployment criteria remain absent from national guidelines such as ...

12/01/2025

Title : Development of Autonomous Truck Mounted Attenuator (ATMA) Deployment Guidelines Considering Traffic and Safety Impacts Creator(s) : Hu, Xianbiao;Tang, Qing;Ding, Yuxin;Wu, Zirui;Pickering-Hilgers, Heather; Corporate Creator(s) : Pennsylvania State University Corporate Contributor(s) : Colorado. Department of Transportation. Applied Research & Innovations Branch;United States. Department of Transportation. Federal Highway Administration; Published Date : 2025-06-01 Report Number : CDOT-2025-07 URL : https://rosap.ntl.bts.gov/view/dot/87981 Hu, Xianbiao et al. (2025). Development of Autonomous Truck Mounted Attenuator (ATMA) Deployment Guidelines Considering Traffic and Safety Impacts. Hu, Xianbiao et al. "Development of Autonomous Truck Mounted Attenuator (ATMA) Deployment Guidelines Considering Traffic and Safety Impacts" (2025) Hu, Xianbiao et al. "Development of Autonomous Truck Mounted Attenuator (ATMA) Deployment Guidelines Considering Traffic and Safety Impacts" , 2025 Export RIS Citation Information. TY - Tech Report AU - Hu, Xianbiao AU - Tang, Qing AU - Ding, Yuxin AU - Wu, Zirui AU - Pickering-Hilgers, Heather A2 - Pennsylvania State University A3 - Colorado. Department of Transportation. Applied Research & Innovations Branch A3 - United States. Department of Transportation. Federal Highway Administration AB - The Autonomous Truck Mounted Attenuator (ATMA) system represents a specialized application of connected and autonomous vehicle (CAV) technologies, designed to enhance worker safety during roadway maintenance operations. Despite its growing adoption across state agencies, formalized deployment criteria remain absent from national guidelines such as the MUTCD, prompting individual DOTs to define their own standards. This study addresses a critical deployment challenge: identifying the appropriate traffic conditions—i.e., the Operational Design Domain (ODD)—under which ATMA can be safely and effectively used. The research begins by analytically modeling the reduced discharge rate resulting from ATMA-induced moving bottlenecks on multilane highways. Using this as a foundation, microscopic traffic simulation is applied to assess the resulting impacts on vehicle delay and traffic density—key metrics for determining Level of Service (LOS) as per the Highway Capacity Manual (HCM). Through this modeling framework, a functional relationship is established between Average Annual Daily Traffic (AADT) and LOS. The approach is validated using high-resolution NGSIM trajectory data, which confirms the model’s ability to accurately reflect capacity reductions caused by slow-moving ATMA vehicles. Sensitivity analyses further reveal that roadway performance is highly influenced by K and D factors, as well as ATMA travel speed. Results suggest that, to maintain LOS at grade C, an AADT threshold of approximately 40,000 vehicles per day provides a practical design guideline. AN - dot:87981 KW - Autonomous vehicles KW - Truck mounted attenuators KW - Bottlenecks KW - Intelligent vehicles KW - Connected vehicles KW - Highway safety KW - Work zone safety KW - Simulation KW - Deployment KW - Guidelines KW - Operational Design Domain (ODD) KW - Effective Discharge Rate KW - Moving Bottleneck LA - English PB - Colorado. Department of Transportation PY - 2025-06-01 SN - CDOT-2025-07 TI - Development of Autonomous Truck Mounted Attenuator (ATMA) Deployment Guidelines Considering Traffic and Safety Impacts M3 - Tech Report N1 - United States N1 - SPR-5380-20-06 UR - https://rosap.ntl.bts.gov/view/dot/87981 ER -
Determination of Immediate Claystone Scour Potential [Research Brief]

Senseney, Christopher T. ;

Stelwagon, Kathryn L.

2025-11-01 | PDF

The purpose of this study was to determine the immediate scour of un-weathered claystone bedrock in bridge configurations, i.e., around piers and/or constricted flow. This study evaluated the erodibility of un-weathered claystone found in the Colorado Front Range with the SRICOS-EFA (Scour Rate in Cohesive Soils – Erosion Function Apparatus) method ...

12/01/2025

Title : Determination of Immediate Claystone Scour Potential [Research Brief] Creator(s) : Senseney, Christopher T.;Stelwagon, Kathryn L.;Tanner, Michael;Tran, Thien; Corporate Creator(s) : University of Colorado Boulder Corporate Contributor(s) : Colorado Department of Transportation. Office of Applied Research Published Date : 2025-11-01 URL : https://rosap.ntl.bts.gov/view/dot/87980 Senseney, Christopher T. et al. (2025). Determination of Immediate Claystone Scour Potential [Research Brief]. Senseney, Christopher T. et al. "Determination of Immediate Claystone Scour Potential [Research Brief]" (2025) Senseney, Christopher T. et al. "Determination of Immediate Claystone Scour Potential [Research Brief]" , 2025 Export RIS Citation Information. TY - Brief AU - Senseney, Christopher T. AU - Stelwagon, Kathryn L. AU - Tanner, Michael AU - Tran, Thien A2 - University of Colorado Boulder A3 - Colorado Department of Transportation. Office of Applied Research AB - The purpose of this study was to determine the immediate scour of un-weathered claystone bedrock in bridge configurations, i.e., around piers and/or constricted flow. This study evaluated the erodibility of un-weathered claystone found in the Colorado Front Range with the SRICOS-EFA (Scour Rate in Cohesive Soils – Erosion Function Apparatus) methodology and calculations. AN - dot:87980 ET - Research Brief KW - Scour KW - Clay KW - Corrosion KW - Cohesive soils KW - Procedures KW - Bridge decks KW - Mathematical prediction KW - Fluid dynamics LA - English PB - Colorado. Department of Transportation PY - 2025-11-01 TI - Determination of Immediate Claystone Scour Potential [Research Brief] M3 - Brief N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/87980 ER -
Determination of Immediate Claystone Scour Potential

Stelwagon, Kate ;

Senseney, Christopher T

2025-11-01 | PDF

The leading cause of bridge failure globally is scour. Scour occurs when water flowing beneath a bridge excavates and carries away portions of the streambed. Traditional scour prediction methodologies were designed for course-grained or “cohesionless” materials. Different scour mechanisms exist for course-grained and fine-grained materials. This st ...

12/01/2025

Title : Determination of Immediate Claystone Scour Potential Creator(s) : Stelwagon, Kate;Senseney, Christopher T; Corporate Creator(s) : University of Colorado Boulder Corporate Contributor(s) : Colorado. Department of Transportation;United States. Department of Transportation. Federal Highway Administration; Published Date : 2025-11-01 Report Number : CDOT-2025-09 URL : https://rosap.ntl.bts.gov/view/dot/87979 Stelwagon, Kate and Senseney, Christopher T (2025). Determination of Immediate Claystone Scour Potential. Stelwagon, Kate and Senseney, Christopher T "Determination of Immediate Claystone Scour Potential" (2025) Stelwagon, Kate and Senseney, Christopher T "Determination of Immediate Claystone Scour Potential" , 2025 Export RIS Citation Information. TY - Tech Report AU - Stelwagon, Kate AU - Senseney, Christopher T A2 - University of Colorado Boulder A3 - Colorado. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - The leading cause of bridge failure globally is scour. Scour occurs when water flowing beneath a bridge excavates and carries away portions of the streambed. Traditional scour prediction methodologies were designed for course-grained or “cohesionless” materials. Different scour mechanisms exist for course-grained and fine-grained materials. This study explores a new scour prediction methodology called SRICOS-EFA and compares it with scour predictions made by HEC-RAS and HEC-18, the standard scour prediction methodologies. This study focuses on scour prediction in fine-grained or “cohesive” materials, specifically Colorado claystone samples from Clear Creek in Wheat Ridge, Colorado. Results from this investigation indicate that SRICOS-EFA may not be an accurate method of estimating scour for Colorado claystone specifically. This result should be considered within the context of the limited number of samples that were tested under the scope of this study. Recommendations for a computational fluid dynamics model and potential next steps within standard procedures are discussed. AN - dot:87979 ET - Final Report KW - Scour KW - Clay KW - Corrosion KW - Cohesive soils KW - Procedures KW - Bridge decks KW - Mathematical prediction KW - Fluid dynamics LA - English PB - Colorado. Department of Transportation PY - 2025-11-01 SN - CDOT-2025-09 TI - Determination of Immediate Claystone Scour Potential M3 - Tech Report N1 - United States N1 - R223.03 UR - https://rosap.ntl.bts.gov/view/dot/87979 ER -
Effect of Asphalt Binder Source on Asphalt Mixture Performance

Mogawer, Walaa S. ;

Rowe, Geoffrey

2025-09-01 | PDF

This study aims to identify point and shape rheological parameters that can effectively differentiate between high and low-quality asphalt binders, particularly in their resistance to intermediate-temperature cracking, regardless of binder source or formulation changes. Point parameters assess binder hardness, while shape parameters describe the bi ...

12/01/2025

Title : Effect of Asphalt Binder Source on Asphalt Mixture Performance Creator(s) : Mogawer, Walaa S.;Rowe, Geoffrey;Abdalfattah, Ibrahim M.;Austerman, Alexander J.; Corporate Creator(s) : University of Massachusetts Dartmouth Corporate Contributor(s) : Massachusetts. Department of Transportation. Office of Transportation Planning;United States. Department of Transportation. Federal Highway Administration; Contributor(s) : Naras, Edmund Published Date : 2025-09-01 Report Number : 25-XXX URL : https://rosap.ntl.bts.gov/view/dot/87978 Mogawer, Walaa S. et al. (2025). Effect of Asphalt Binder Source on Asphalt Mixture Performance. Mogawer, Walaa S. et al. "Effect of Asphalt Binder Source on Asphalt Mixture Performance" (2025) Mogawer, Walaa S. et al. "Effect of Asphalt Binder Source on Asphalt Mixture Performance" , 2025 Export RIS Citation Information. TY - Tech Report AU - Mogawer, Walaa S. AU - Rowe, Geoffrey AU - Abdalfattah, Ibrahim M. AU - Austerman, Alexander J. A2 - University of Massachusetts Dartmouth A3 - Massachusetts. Department of Transportation. Office of Transportation Planning A3 - United States. Department of Transportation. Federal Highway Administration A4 - Naras, Edmund AB - This study aims to identify point and shape rheological parameters that can effectively differentiate between high and low-quality asphalt binders, particularly in their resistance to intermediate-temperature cracking, regardless of binder source or formulation changes. Point parameters assess binder hardness, while shape parameters describe the binder’s overall viscoelastic behavior. A total of twenty asphalt binders were tested, comprising seventeen binders from various suppliers and three low-quality binders. Two of the low-quality binders were artificially manufactured, while one was obtained from a supplier. To validate the selected parameters, a Superpave 12.5 mm asphalt mixture was designed using seven of the binders, including the three lower quality ones. The mixtures’ susceptibility to intermediate-temperature cracking was evaluated using the Indirect Tensile Asphalt Cracking Test (IDEAL-CT) as per ASTM D8225-19. Higher Cracking Tolerance Index (CTIndex) values indicate better resistance to cracking. The CTIndex results were compared with binder rankings based on the identified point and shape parameters to verify their effectiveness. Glover-Rowe (G-R) at 15°C and 10 rad/s and the phase angle at a specific modulus of 10 MPa (δ10MPa) were found to be effective in distinguishing poor-quality binders. A simplified, rapid test method using a dynamic shear rheometer (DSR) was developed to measure these parameters, showing a strong correlation with traditional master curve analysis. This approach offers a practical tool for routine quality control during production, ensuring consistent binder performance and improved resistance to intermediate-temperature cracking in asphalt mixtures. AN - dot:87978 ET - Final Report [February 2023 – September 2025] KW - Points (Geometry) KW - Rheological properties KW - Dimensionless parameters KW - Curves (Geometry) KW - Temperature KW - Deterioration by environmental action KW - Asphalt mixtures KW - Binders KW - Performance KW - Testing KW - Point and Shape Rheological Parameters KW - Phase Angle KW - Master curve KW - Pavel Kriz Phase Angle KW - Glover-Rowe Parameter Intermediate-Temperature Cracking KW - IDEAL-CT LA - English PB - Massachusetts. Dept. of Transportation. Office of Transportation Planning PY - 2025-09-01 SN - 25-XXX TI - Effect of Asphalt Binder Source on Asphalt Mixture Performance M3 - Tech Report N1 - United States N1 - 121136 UR - https://rosap.ntl.bts.gov/view/dot/87978 ER -
Remote Bridge Health Monitoring for Scouring Using Cost-Efficient Sensing Technology

Yee, Tien ;

Yang, Jidong J.

2025-11-01 | PDF

Bridge scour is a leading cause of hydraulic-related bridge failures, yet current monitoring practices rely on periodic inspections that are insufficient during floods when scour activity accelerates. To address this gap, a low-cost (under $1,000 per unit) remote scour-monitoring system was developed and deployed on two scour critical bridges in Ge ...

12/01/2025

Title : Remote Bridge Health Monitoring for Scouring Using Cost-Efficient Sensing Technology Creator(s) : Yee, Tien;Yang, Jidong J.;Oguzmert, Metin;Amirgholy, Mahyar;Kazemian, Alan;Sarkar, Ajoy;Alam, Md. Shamsul;Deng, Penghao; Corporate Creator(s) : Kennesaw State University Corporate Contributor(s) : Georgia Department of Transportation. Office of Transportation Data;United States. Department of Transportation. Federal Highway Administration; Published Date : 2025-11-01 Report Number : FHWA-GA-25-2219 URL : https://rosap.ntl.bts.gov/view/dot/87977 Yee, Tien et al. (2025). Remote Bridge Health Monitoring for Scouring Using Cost-Efficient Sensing Technology. Yee, Tien et al. "Remote Bridge Health Monitoring for Scouring Using Cost-Efficient Sensing Technology" (2025) Yee, Tien et al. "Remote Bridge Health Monitoring for Scouring Using Cost-Efficient Sensing Technology" , 2025 Export RIS Citation Information. TY - Tech Report AU - Yee, Tien AU - Yang, Jidong J. AU - Oguzmert, Metin AU - Amirgholy, Mahyar AU - Kazemian, Alan AU - Sarkar, Ajoy AU - Alam, Md. Shamsul AU - Deng, Penghao A2 - Kennesaw State University A3 - Georgia Department of Transportation. Office of Transportation Data A3 - United States. Department of Transportation. Federal Highway Administration AB - Bridge scour is a leading cause of hydraulic-related bridge failures, yet current monitoring practices rely on periodic inspections that are insufficient during floods when scour activity accelerates. To address this gap, a low-cost (under $1,000 per unit) remote scour-monitoring system was developed and deployed on two scour critical bridges in Georgia. Each system integrates sonar depth sensors, accelerometers, wireless communication modules, and cloud-based data processing to provide continuous, real-time monitoring. The system operates in two modes. Under low-flow conditions, vibration data are analyzed with machine learning anomaly detection to establish baseline structural behavior, and under high-flow conditions, models estimate scour depths in conjunction with direct sonar measurements. A custom web interface, Scour View, was developed to visualize data, integrate GDOT’s BridgeWatch© alerts, and enable remote control of sensor modes and inspection team allocation during storm events. Field deployments during three major floods in early 2024 confirmed an inverse relationship between scour depth and bridge vibrational frequency. The system provided accurate, site-specific scour measurements, and comparisons with the Colorado State University (CSU) scour equation highlighted consistent underprediction by the empirical model. The study demonstrates the feasibility of a scalable, cost-effective scour monitoring platform that enhances bridge safety and resilience during extreme hydrologic events. Future improvements include expanded deployment, integration of velocity and camera sensors, and edge-computing solutions for fully autonomous monitoring. AN - dot:87977 ET - Final Report (November 2022–November 2025) KW - Scour KW - Remote sensing KW - Sensors KW - Cost effectiveness KW - Economic efficiency KW - Machine learning KW - Structural analysis KW - Optimization KW - Bridge management systems KW - Accelerometers KW - Wireless sensor networks KW - Monitoring KW - Mechanical failure LA - English PB - Georgia. Department of Transportation PY - 2025-11-01 SN - FHWA-GA-25-2219 TI - Remote Bridge Health Monitoring for Scouring Using Cost-Efficient Sensing Technology M3 - Tech Report N1 - United States N1 - 0019322 UR - https://rosap.ntl.bts.gov/view/dot/87977 ER -
Road Weather Management Using Connected Vehicle Technology

Perry, Frank ;

Toth, Chris

2024-09-01 | PDF

Road weather systems collect, analyze, and share weather information to help mitigate the disruptive impact of weather events on the nation’s surface transportation system. Much research and development has been undertaken to advance road weather management practice. Meanwhile, many state and local efforts have aimed to deploy connected vehicle (CV ...

12/01/2025

Title : Road Weather Management Using Connected Vehicle Technology Creator(s) : Perry, Frank;Toth, Chris;Ghosh, Shalini; Corporate Creator(s) : WSP USA Inc. Corporate Contributor(s) : Iowa Department of Transportation. Aurora Program;United States. Department of Transportation. Federal Highway Administration;Transportation Pooled Fund Program; Published Date : 2024-09-01 Report Number : 2023-03 URL : https://rosap.ntl.bts.gov/view/dot/87976 Perry, Frank et al. (2024). Road Weather Management Using Connected Vehicle Technology. Perry, Frank and Toth, Chris and Ghosh, Shalini "Road Weather Management Using Connected Vehicle Technology" (2024) Perry, Frank et al. "Road Weather Management Using Connected Vehicle Technology" , 2024 Export RIS Citation Information. TY - Tech Report AU - Perry, Frank AU - Toth, Chris AU - Ghosh, Shalini A2 - WSP USA Inc. A3 - Iowa Department of Transportation. Aurora Program A3 - United States. Department of Transportation. Federal Highway Administration A3 - Transportation Pooled Fund Program AB - Road weather systems collect, analyze, and share weather information to help mitigate the disruptive impact of weather events on the nation’s surface transportation system. Much research and development has been undertaken to advance road weather management practice. Meanwhile, many state and local efforts have aimed to deploy connected vehicle (CV) equipment on the roadside and in vehicles. CV message exchanges present an opportunity to provide vehicle-produced, standardized road weather data to transportation infrastructure owners and operators while standardizing the dissemination of weather-related information to travelers. In particular, road weather systems have the potential to benefit from the data that vehicles may produce and to provide critical information to drivers of those vehicles. It has been several years since any significant research, development, and deployment of weather-related connected vehicle applications have been undertaken. Many weather-related CV standards (such as SAE J2945/3) have been released recently but have not yet had much opportunity to be used in practice. The goal of this project was to determine how the data in CV messages could be utilized to enhance existing use cases or potentially enable new use cases for road weather information. Section 2 of this report outlines the results of initial research, including an overview of CV technology and use cases for CV message data. Section 3 presents a Concept of Operations focusing on message exchanges that will enhance the quality of the weather data used in road weather and traffic management activities. AN - dot:87976 ET - Final Report KW - Connected vehicles KW - Road weather information systems KW - Infrastructure KW - Drivers KW - Data analysis KW - Traveler information and communication systems LA - English PB - Iowa. Department of Transportation. Aurora Program PY - 2024-09-01 SN - 2023-03 TI - Road Weather Management Using Connected Vehicle Technology M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/87976 ER -
Experimental Product and Evaluation Program: Annual Report [2002]

Oklahoma. Department of Transportation. Research & Development Division

2002-02-01 | PDF

This publication consists of a listing of experimental products that are being or have been evaluated by The Oklahoma Department of Transportation (ODOT), or other transportation agencies. This listing is continuously updated as new information is received. A status of the evaluation is given for each item, showing the progress or result of the eva ...

12/01/2025

Title : Experimental Product and Evaluation Program: Annual Report [2002] Corporate Creator(s) : Oklahoma. Department of Transportation. Research & Development Division Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration Contributor(s) : Williams, Gary Published Date : 2002-02-01 Report Number : FHWA/OK 02(01) URL : https://rosap.ntl.bts.gov/view/dot/87975 Oklahoma. Department of Transportation. Research & Development Division (2002). Experimental Product and Evaluation Program: Annual Report [2002]. Oklahoma. Department of Transportation. Research & Development Division "Experimental Product and Evaluation Program: Annual Report [2002]" (2002) Oklahoma. Department of Transportation. Research & Development Division "Experimental Product and Evaluation Program: Annual Report [2002]" , 2002 Export RIS Citation Information. TY - Tech Report A2 - Oklahoma. Department of Transportation. Research & Development Division A3 - United States. Department of Transportation. Federal Highway Administration A4 - Williams, Gary AB - This publication consists of a listing of experimental products that are being or have been evaluated by The Oklahoma Department of Transportation (ODOT), or other transportation agencies. This listing is continuously updated as new information is received. A status of the evaluation is given for each item, showing the progress or result of the evaluation. AN - dot:87975 ET - Jan. - Dec. 2001 KW - Products KW - Evaluation KW - Program management KW - Transportation system management KW - Annual reports LA - English PB - Oklahoma. Department of Transportation PY - 2002-02-01 SN - FHWA/OK 02(01) TI - Experimental Product and Evaluation Program: Annual Report [2002] M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/87975 ER -
Intelligent Transportation Systems (ITS) Opportunities for Oklahoma

Lewis, Sherman ;

Mundende, D Chongo

2001-01-01 | PDF

This study reports on the potential application of Intelligent Transportation Systems (ITS) in Oklahoma using advanced sensor computer, electronics, and communications technologies and management strategies. The study first discusses national initiatives, funding ITS strategic plans in other states, and general benefits of ITS. This is followed by ...

12/01/2025

Title : Intelligent Transportation Systems (ITS) Opportunities for Oklahoma Creator(s) : Lewis, Sherman;Mundende, D Chongo;Sagini, Meshack M;Wachstetter, Marion Kay; Corporate Creator(s) : Langston University Corporate Contributor(s) : Oklahoma. Department of Transportation. Research & Development Division;United States. Department of Transportation. Federal Highway Administration; Published Date : 2001-01-01 Report Number : FHWA/OK 01(02) URL : https://rosap.ntl.bts.gov/view/dot/87974 Lewis, Sherman et al. (2001). Intelligent Transportation Systems (ITS) Opportunities for Oklahoma. Lewis, Sherman et al. "Intelligent Transportation Systems (ITS) Opportunities for Oklahoma" (2001) Lewis, Sherman et al. "Intelligent Transportation Systems (ITS) Opportunities for Oklahoma" , 2001 Export RIS Citation Information. TY - Tech Report AU - Lewis, Sherman AU - Mundende, D Chongo AU - Sagini, Meshack M AU - Wachstetter, Marion Kay A2 - Langston University A3 - Oklahoma. Department of Transportation. Research & Development Division A3 - United States. Department of Transportation. Federal Highway Administration AB - This study reports on the potential application of Intelligent Transportation Systems (ITS) in Oklahoma using advanced sensor computer, electronics, and communications technologies and management strategies. The study first discusses national initiatives, funding ITS strategic plans in other states, and general benefits of ITS. This is followed by an overview of a survey that was conducted in Oklahoma among potential stakeholders regarding the implementation of ITS. Recommendations and strategies that evolved from the survey are discussed. The study concludes with a discussion on the possible challenges and barriers affecting implementation of ITS in Oklahoma. AN - dot:87974 ET - August 1999 to December 2000 KW - Intelligent transportation systems KW - Planning KW - Policy LA - English PB - Oklahoma. Department of Transportation PY - 2001-01-01 SN - FHWA/OK 01(02) TI - Intelligent Transportation Systems (ITS) Opportunities for Oklahoma M3 - Tech Report N1 - United States N1 - 2154 UR - https://rosap.ntl.bts.gov/view/dot/87974 ER -
Mix Design Using Asphalt Millings

Issa, Rita I ;

Zaman, Musharraf M.

1999-09-01 | PDF

A field demonstration project was undertaken by the Oklahoma Department of Transportation to investigate the performance of an asphalt overlay constructed using recycled asphalt millings and the cold mixed, cold laid system. A 1.9-km (1.2-mi) section of the US-64 North frontage road in Pawnee County was rehabilitated with a 5-cm (2-in.) thick overl ...

12/01/2025

Title : Mix Design Using Asphalt Millings Creator(s) : Issa, Rita I;Zaman, Musharraf M.;Miller, Gerald A.; Corporate Creator(s) : University of Oklahoma Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration Published Date : 1999-09-01 Report Number : FHwA/OK 00(04) URL : https://rosap.ntl.bts.gov/view/dot/87973 Issa, Rita I et al. (1999). Mix Design Using Asphalt Millings. Issa, Rita I and Zaman, Musharraf M. and Miller, Gerald A. "Mix Design Using Asphalt Millings" (1999) Issa, Rita I et al. "Mix Design Using Asphalt Millings" , 1999 Export RIS Citation Information. TY - Tech Report AU - Issa, Rita I AU - Zaman, Musharraf M. AU - Miller, Gerald A. A2 - University of Oklahoma A3 - United States. Department of Transportation. Federal Highway Administration AB - A field demonstration project was undertaken by the Oklahoma Department of Transportation to investigate the performance of an asphalt overlay constructed using recycled asphalt millings and the cold mixed, cold laid system. A 1.9-km (1.2-mi) section of the US-64 North frontage road in Pawnee County was rehabilitated with a 5-cm (2-in.) thick overlay using 100% recycled asphalt millings. The section was divided into four approximately equal length test sections. A different type of emulsion was used to rejuvenate the asphalt millings for each test section. The purpose was to determine the relative performance of each emulsion type and construction method used in this recycled asphalt pavement (RAP) project. A laboratory investigation was carried out to accomplish two major tasks: the first task was to determine the optimum emulsion and moisture contents of RAP mixes prepared with four different types of emulsions; the second task was to investigate the effect of adding portland cement to RAP mixes, thus producing a cement-emulsion composite. One of the objectives of this study was to document the behavior of RAP mixes as affected by the addition of portland cement, and to find the optimum emulsion and cement contents. Achieving an adequate compaction is crucial to the successful performance of a cold mixed, cold laid overlay. The degree of compaction can greatly vary depending upon rolling pattern, speed, equipment, compaction dynamics, and characteristics of RAP mixes. From post-construction site visits, it was evident that the polymer modified anionic (PMA) emulsion section performed better than the other sections. A PMA mix containing 2% free moisture and 2% emulsion was found to have the highest dry stability value; however, this mix had a lower retained stability than a comparable mix prepared with polymer modified cationic (PMC) emulsion. For samples prepared from cement-emulsion composite, both dry and soaked stability values increased as cement content increased. The addition of portland cement, however, affected the stability value of samples cured under soaked conditions much more than those cured under dry conditions. The introduction of as little as 1% of portland cement to RAP mixes doubled the retained stability of specimens, as compared with a RAP mix rejuvenated with high float emulsion (HFE-300). The cold mixed, cold laid process of pavement rehabilitation holds significant promise for the future. The current technology, however, needs improvement and refinement through further laboratory and field studies. AN - dot:87973 KW - Anionic emulsified asphalt KW - Asphalt pavements KW - Cationic emulsified asphalt KW - Cement content KW - Cold in-place recycling KW - Cold mix paving mixtures KW - Mix design LA - English PB - Oklahoma. Department of Transportation PY - 1999-09-01 SN - FHwA/OK 00(04) TI - Mix Design Using Asphalt Millings M3 - Tech Report N1 - United States N1 - 2148 UR - https://rosap.ntl.bts.gov/view/dot/87973 ER -
Evaluation of Silica Fume High Density Thin Bonded Overlays -Interim Report

Brewer, Wilson B. ;

Williams, Gary

2001-02-01 | PDF

In September 1999, Bridges "A" and "B" of contract TBOI-0035-1(110)044 were overlaid with a silica fume concrete surface. ODOT has been exploring ways to stop or slow chloride-induced corrosion of uncoated reinforcing steel in bridge decks. Silica fume concrete additive has demonstrated success in reducing chloride intrusion. After one year of test ...

12/01/2025

Title : Evaluation of Silica Fume High Density Thin Bonded Overlays -Interim Report Creator(s) : Brewer, Wilson B.;Williams, Gary; Corporate Creator(s) : Oklahoma. Department of Transportation. Research & Development Division Published Date : 2001-02-01 Report Number : FHWA/OK 00(03) URL : https://rosap.ntl.bts.gov/view/dot/87972 Brewer, Wilson B. and Williams, Gary (2001). Evaluation of Silica Fume High Density Thin Bonded Overlays -Interim Report. Brewer, Wilson B. and Williams, Gary "Evaluation of Silica Fume High Density Thin Bonded Overlays -Interim Report" (2001) Brewer, Wilson B. and Williams, Gary "Evaluation of Silica Fume High Density Thin Bonded Overlays -Interim Report" , 2001 Export RIS Citation Information. TY - Tech Report AU - Brewer, Wilson B. AU - Williams, Gary A2 - Oklahoma. Department of Transportation. Research & Development Division AB - In September 1999, Bridges "A" and "B" of contract TBOI-0035-1(110)044 were overlaid with a silica fume concrete surface. ODOT has been exploring ways to stop or slow chloride-induced corrosion of uncoated reinforcing steel in bridge decks. Silica fume concrete additive has demonstrated success in reducing chloride intrusion. After one year of testing, the ride quality decreased slightly, skid test results show an adequate amount of friction characteristics, and both bridges in good condition based on reinforcing steel corrosion activity. Overall, silica fume modified PCC overlay is performing well. AN - dot:87972 KW - Bridge decks KW - Bridge management systems KW - Compressive strength KW - Concrete KW - Evaluation KW - Mix design KW - Overlays (Pavements) KW - Silica fume KW - Thickness LA - English PB - Oklahoma. Department of Transportation PY - 2001-02-01 SN - FHWA/OK 00(03) TI - Evaluation of Silica Fume High Density Thin Bonded Overlays -Interim Report M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/87972 ER -
Experimental Product and Evaluation Program: Annual Report

Oklahoma. Department of Transportation

2000-02-01 | PDF

This publication consists of a listing of experimental products that are being or have been evaluated by The Oklahoma Department of Transportation (ODOT) or other transportation agencies. This listing is continuously updated as new information is received. A status of the evaluation is given for each item, showing the progress or result of the eval ...

12/01/2025

Title : Experimental Product and Evaluation Program: Annual Report Corporate Creator(s) : Oklahoma. Department of Transportation Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration Contributor(s) : Williams, Gary Published Date : 2000-02-01 Report Number : FHW A/OK 00(02) · URL : https://rosap.ntl.bts.gov/view/dot/87971 Oklahoma. Department of Transportation (2000). Experimental Product and Evaluation Program: Annual Report. Oklahoma. Department of Transportation "Experimental Product and Evaluation Program: Annual Report" (2000) Oklahoma. Department of Transportation "Experimental Product and Evaluation Program: Annual Report" , 2000 Export RIS Citation Information. TY - Tech Report A2 - Oklahoma. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration A4 - Williams, Gary AB - This publication consists of a listing of experimental products that are being or have been evaluated by The Oklahoma Department of Transportation (ODOT) or other transportation agencies. This listing is continuously updated as new information is received. A status of the evaluation is given for each item, showing the progress or result of the evaluation. AN - dot:87971 ET - Jan. -Dec. 1999 KW - Products KW - Evaluation KW - Program management KW - Transportation system management KW - Annual reports LA - English PB - Oklahoma. Department of Transportation PY - 2000-02-01 SN - FHW A/OK 00(02) · TI - Experimental Product and Evaluation Program: Annual Report M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/87971 ER -
An Intelligent Human-Centric Communication System for Adverse Weather and Road Conditions

Demir, Ibrahim

;

Sermet, Yusuf

2025-09-01 | PDF

Adverse weather conditions present significant risks to motorists, making safe navigation challenging. Artificial intelligence (AI) advancements have facilitated the development of intelligent systems to address these concerns. This project introduces Conversational AI for Road Weather Information Systems (CARWIS), an AI-powered solution that provi ...

12/01/2025

Title : An Intelligent Human-Centric Communication System for Adverse Weather and Road Conditions Creator(s) : Demir, Ibrahim;Sermet, Yusuf;Abrar, Moaiz;Vald, Gabriel; Corporate Creator(s) : University of Iowa. IIHR – Hydroscience & Engineering;Tulane University; Corporate Contributor(s) : Iowa Department of Transportation. Aurora Program;United States. Department of Transportation. Federal Highway Administration;Transportation Pooled Fund Program; Published Date : 2025-09-01 Report Number : 2023-02 URL : https://rosap.ntl.bts.gov/view/dot/87970 Demir, Ibrahim et al. (2025). An Intelligent Human-Centric Communication System for Adverse Weather and Road Conditions. Demir, Ibrahim et al. "An Intelligent Human-Centric Communication System for Adverse Weather and Road Conditions" (2025) Demir, Ibrahim et al. "An Intelligent Human-Centric Communication System for Adverse Weather and Road Conditions" , 2025 Export RIS Citation Information. TY - Tech Report AU - Demir, Ibrahim AU - Sermet, Yusuf AU - Abrar, Moaiz AU - Vald, Gabriel A2 - University of Iowa. IIHR – Hydroscience & Engineering A2 - Tulane University A3 - Iowa Department of Transportation. Aurora Program A3 - United States. Department of Transportation. Federal Highway Administration A3 - Transportation Pooled Fund Program AB - Adverse weather conditions present significant risks to motorists, making safe navigation challenging. Artificial intelligence (AI) advancements have facilitated the development of intelligent systems to address these concerns. This project introduces Conversational AI for Road Weather Information Systems (CARWIS), an AI-powered solution that provides real-time data on road conditions during severe weather. CARWIS gathers data from various sources, including weather forecasts and traffic cameras, and employs natural language processing to generate timely and accurate insights into road conditions. CARWIS can detect hazardous conditions, such as icy roads or low visibility due to fog or precipitation, and refine its predictions over time, enabling drivers to make informed decisions about their travel plans, potentially reducing accidents and enhancing safety. Additionally, CARWIS can assist transportation professionals in planning for and responding to severe weather events by providing detailed information on road conditions. This enables officials to prioritize resources and make well-informed decisions regarding road closures and safety measures. This innovative solution harnesses the power of AI to improve road safety and reduce incidents during adverse weather conditions. As AI technology continues to progress, it is anticipated that more advanced systems will be developed to assist in navigating and managing severe weather events on roadways. AN - dot:87970 ET - Final Report KW - Artificial intelligence KW - Communication systems KW - Expert systems KW - Highway safety KW - Intelligent transportation systems KW - Warning systems KW - Weather conditions LA - English PB - Iowa. Department of Transportation. Aurora Program PY - 2025-09-01 SN - 2023-02 TI - An Intelligent Human-Centric Communication System for Adverse Weather and Road Conditions M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/87970 ER -
Investigating Heterogeneity in Private Vehicle Ownership, Preferences towards Alternative Fuel Vehicles, and Adoption of Shared Mobility Options

Iogansen, Xiatian

2024-01-01 | PDF

In recent decades, emerging technologies have significantly transformed the transportation sector, offering a wider range of vehicle options and mobility alternatives. However, the recent COVID-19 pandemic disrupted many aspects of daily life, likely leaving long-lasting effects that further complicate our understanding and prediction of individual ...

12/01/2025

Title : Investigating Heterogeneity in Private Vehicle Ownership, Preferences towards Alternative Fuel Vehicles, and Adoption of Shared Mobility Options Creator(s) : Iogansen, Xiatian Corporate Creator(s) : University of California, Davis Published Date : 2024-01-01 DOI : https://escholarship.org/uc/item/5hx900zj Iogansen, Xiatian (2024). Investigating Heterogeneity in Private Vehicle Ownership, Preferences towards Alternative Fuel Vehicles, and Adoption of Shared Mobility Options. https://escholarship.org/uc/item/5hx900zj Iogansen, Xiatian "Investigating Heterogeneity in Private Vehicle Ownership, Preferences towards Alternative Fuel Vehicles, and Adoption of Shared Mobility Options" (2024), https://escholarship.org/uc/item/5hx900zj Iogansen, Xiatian "Investigating Heterogeneity in Private Vehicle Ownership, Preferences towards Alternative Fuel Vehicles, and Adoption of Shared Mobility Options" , 2024, https://escholarship.org/uc/item/5hx900zj Export RIS Citation Information. TY - Thesis AU - Iogansen, Xiatian A2 - University of California, Davis AB - In recent decades, emerging technologies have significantly transformed the transportation sector, offering a wider range of vehicle options and mobility alternatives. However, the recent COVID-19 pandemic disrupted many aspects of daily life, likely leaving long-lasting effects that further complicate our understanding and prediction of individuals’ activity-travel patterns, vehicle ownership decisions, and fuel type preferences. Despite efforts by the State of California and the rest of the U.S. to promote sustainable travel, more behavioral shifts are needed to reduce car dependence, encourage multimodal transportation, and accelerate the electrification of both privately owned and shared vehicle fleets. Further research is needed to identify the factors that motivate or hinder these shifts, and to understand their heterogeneous impacts across subpopulations, which vary based on personal attitudes, socio-demographic characteristics, geographic contexts, and COVID-related factors. This dissertation aims to address these research gaps through four interconnected studies. AB - Iogansen, X. (2024). Investigating Heterogeneity in Private Vehicle Ownership, Preferences towards Alternative Fuel Vehicles, and Adoption of Shared Mobility Options. UC Davis. ProQuest ID: Iogansen_ucdavis_0029D_23561. Merritt ID: ark:/13030/m516610f. Retrieved from https://escholarship.org/uc/item/5hx900zj AN - dot:87969 DO - https://escholarship.org/uc/item/5hx900zj KW - Automobile ownership KW - Consumer preferences KW - COVID-19 KW - Electric vehicles KW - Ridesourcing KW - Shared mobility LA - English PB - University of California, Davis PY - 2024-01-01 TI - Investigating Heterogeneity in Private Vehicle Ownership, Preferences towards Alternative Fuel Vehicles, and Adoption of Shared Mobility Options M3 - Thesis N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/87969 ER -
Methodology for Determining the Impact of Highway Bypasses in Oklahoma

Rogers, Cynthia L ;

Marshment, Richard S

2001-01-01 | PDF

Project No. 2150 develops a methodology for determining the impact of highway bypasses on small town business districts in Oklahoma. The focus is predicting likely impacts of proposed bypasses on US 70. Economic impacts are measured by comparing changes in the sales tax base in the bypassed cities with those of in similar non-bypassed cities. Quasi ...

12/01/2025

Title : Methodology for Determining the Impact of Highway Bypasses in Oklahoma Creator(s) : Rogers, Cynthia L;Marshment, Richard S; Corporate Creator(s) : Oklahoma. Department of Transportation. Research & Development Division Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration Published Date : 2001-01-01 Report Number : FHWA/OK 01(03) URL : https://rosap.ntl.bts.gov/view/dot/87968 Rogers, Cynthia L and Marshment, Richard S (2001). Methodology for Determining the Impact of Highway Bypasses in Oklahoma. Rogers, Cynthia L and Marshment, Richard S "Methodology for Determining the Impact of Highway Bypasses in Oklahoma" (2001) Rogers, Cynthia L and Marshment, Richard S "Methodology for Determining the Impact of Highway Bypasses in Oklahoma" , 2001 Export RIS Citation Information. TY - Tech Report AU - Rogers, Cynthia L AU - Marshment, Richard S A2 - Oklahoma. Department of Transportation. Research & Development Division A3 - United States. Department of Transportation. Federal Highway Administration AB - Project No. 2150 develops a methodology for determining the impact of highway bypasses on small town business districts in Oklahoma. The focus is predicting likely impacts of proposed bypasses on US 70. Economic impacts are measured by comparing changes in the sales tax base in the bypassed cities with those of in similar non-bypassed cities. Quasi-experimental control group and difference-in-difference estimation techniques are employed. The method is demonstrated by analyzing the 1993 bypass of Stonewall as well as bypasses of Rush Springs and Snyder in the early 1970s. The null hypothesis that the bypasses had no impact on city sales taxes cannot be rejected. The results are not conclusive due to a lack of bypass cases and usable data on traffic volumes and composition, residential property values, regional economic performance and business climate during the pre-bypass period. The recommendation based on site visits and interviews are to include signs identifying business districts as well as follow-up safety studies of route intersections in bypass project plans. AN - dot:87968 ET - January 1999 to January 2001 KW - Businesses KW - Bypasses KW - Case studies KW - Data collection KW - Economic impacts KW - Industrial location KW - Small towns KW - Traffic volume KW - Transportation planning LA - English PB - Oklahoma. Department of Transportation PY - 2001-01-01 SN - FHWA/OK 01(03) TI - Methodology for Determining the Impact of Highway Bypasses in Oklahoma M3 - Tech Report N1 - United States N1 - 2150 UR - https://rosap.ntl.bts.gov/view/dot/87968 ER -
NHTSA Crash Investigation Sampling System Event Data Recorder Data Element Benchmarking Study

Wiacek, Christopher J ;

Firey, Lauren M L

2025-11-01 | PDF

An event data recorder records vehicle data just prior or during a crash (braking, air bag status and deployment, seat belt usage, etc., and then crash events), intended for retrieval after the crash to help crash reconstruction or vehicle safety research. NHTSA established CDR requirements in 49 C.F.R. § 563 in 2012. Since then, crash avoidance an ...

11/26/2025

Title : NHTSA Crash Investigation Sampling System Event Data Recorder Data Element Benchmarking Study Creator(s) : Wiacek, Christopher J;Firey, Lauren M L;Frishkorn, Adam;Lehmer, Matt;Li, Eric; Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 2025-11-01 Report Number : DOT HS 813 741 DOI : https://doi.org/10.21949/14xv-jp86 Wiacek, Christopher J et al. (2025). NHTSA Crash Investigation Sampling System Event Data Recorder Data Element Benchmarking Study. https://doi.org/10.21949/14xv-jp86 Wiacek, Christopher J et al. "NHTSA Crash Investigation Sampling System Event Data Recorder Data Element Benchmarking Study" (2025), https://doi.org/10.21949/14xv-jp86 Wiacek, Christopher J et al. "NHTSA Crash Investigation Sampling System Event Data Recorder Data Element Benchmarking Study" , 2025, https://doi.org/10.21949/14xv-jp86 Export RIS Citation Information. TY - Statistical Report AU - Wiacek, Christopher J AU - Firey, Lauren M L AU - Frishkorn, Adam AU - Lehmer, Matt AU - Li, Eric A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - An event data recorder records vehicle data just prior or during a crash (braking, air bag status and deployment, seat belt usage, etc., and then crash events), intended for retrieval after the crash to help crash reconstruction or vehicle safety research. NHTSA established CDR requirements in 49 C.F.R. § 563 in 2012. Since then, crash avoidance and advanced driver assistance systems have expanded in the market. This study examines data elements recorded beyond what is required by § 563 since it went into effect. A query on 2022-2023 Crash Investigation Sampling System case year data was conducted, then model year 2022-2024 vehicles were chosen that had that information available for analysis. Fifteen vehicle manufacturers met these criteria and were eligible for review. Data elements were also identified that were not incorporated in existing regulations or best practices and were unique to each manufacturer. All 15 were reporting all § 563 Table I data elements, but reporting § 563 Table II elements varied across OEMs. Large variation in the number of data elements beyond § 563 reported ranged from 9 to 405 additional elements. Some were reporting data elements from UN R160 and SAE J1698, but there were differences across OEMs for each element. AN - dot:87967 DO - https://doi.org/10.21949/14xv-jp86 ET - NHTSA Technical Report KW - Event data recorders KW - Data files KW - Driver support systems KW - Crash avoidance systems KW - Crashworthiness KW - Advanced driver assistance systems (ADAS) LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 2025-11-01 SN - DOT HS 813 741 TI - NHTSA Crash Investigation Sampling System Event Data Recorder Data Element Benchmarking Study M3 - Statistical Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/87967 ER -
Evaluation of Equipment, Methods, and Pavement Design Implications for Texas Conditions of the AASHTO 2002 Axle Load Spectra Traffic Methodology: Literature Review and Level 1 Data

Wang, Feng ;

Hong, Feng

2006-10-01 | PDF

The use of actual axle load distributions instead of summary statistics, such as equivalent single-axle loads (ESALs), in the forthcoming Mechanistic-Empirical (M-E) Pavement Design Guide will allow the assessment of the consequences of specific loading configurations on pavement performance. For example, the damaging effects of increased axle load ...

11/24/2025

Title : Evaluation of Equipment, Methods, and Pavement Design Implications for Texas Conditions of the AASHTO 2002 Axle Load Spectra Traffic Methodology: Literature Review and Level 1 Data Creator(s) : Wang, Feng;Hong, Feng;Prozzi, Jorge A.; Corporate Creator(s) : University of Texas at Austin. Center for Transportation Research Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office;United States. Department of Transportation. Federal Highway Administration; Published Date : 2006-10-01 Report Number : FHWA/TX-06/0-4510-2 URL : https://rosap.ntl.bts.gov/view/dot/87966 Wang, Feng et al. (2006). Evaluation of Equipment, Methods, and Pavement Design Implications for Texas Conditions of the AASHTO 2002 Axle Load Spectra Traffic Methodology: Literature Review and Level 1 Data. Wang, Feng and Hong, Feng and Prozzi, Jorge A. "Evaluation of Equipment, Methods, and Pavement Design Implications for Texas Conditions of the AASHTO 2002 Axle Load Spectra Traffic Methodology: Literature Review and Level 1 Data" (2006) Wang, Feng et al. "Evaluation of Equipment, Methods, and Pavement Design Implications for Texas Conditions of the AASHTO 2002 Axle Load Spectra Traffic Methodology: Literature Review and Level 1 Data" , 2006 Export RIS Citation Information. TY - Tech Report AU - Wang, Feng AU - Hong, Feng AU - Prozzi, Jorge A. A2 - University of Texas at Austin. Center for Transportation Research A3 - Texas Department of Transportation. Research and Technology Implementation Office A3 - United States. Department of Transportation. Federal Highway Administration AB - The use of actual axle load distributions instead of summary statistics, such as equivalent single-axle loads (ESALs), in the forthcoming Mechanistic-Empirical (M-E) Pavement Design Guide will allow the assessment of the consequences of specific loading configurations on pavement performance. For example, the damaging effects of increased axle loads on specific pavement structures, increased tire pressure, or different axle configurations could be assessed. It is expected that the new M-E Guide will significantly influence future pavement design practices in the United States and abroad. The successful application of the new M-E Design Guide will require more detailed traffic data and will place an increased demand on weigh-in-motion (WIM) systems in Texas and probably other states in the U.S. Texas is now evaluating the transition from the current empirical AASHTO Pavement Design Guide (AASHTO’93) to the new M-E Design Guide. In order to assist the Texas Department of Transportation (TxDOT) in determining the measures that should be taken to increase traffic data collection capability in Texas so as to meet the data requirements set by the M-E Design Guide, a review of state-of-the-art WIM technologies in the U.S. with particular emphasis on WIM performance, economy, and calibration, together with an assessment of the potential trends in vehicle weights and dimensions are integral parts of this research. This interim report presents the findings of the literature review with particular emphasis on: (i) current regulations and trends on weights, lengths, and widths of commercial vehicles; and (ii) a review of state-of-the-art WIM technology. The report is complemented with a summary of the available WIM data in Texas to support Level 1 design in the M-E Design Guide. AN - dot:87966 ET - September 2002-August 2003 KW - Axle loads KW - Literature reviews KW - Mechanistic-empirical pavement design KW - Traffic data KW - Weigh in motion LA - English PB - Texas. Department of Transportation PY - 2006-10-01 SN - FHWA/TX-06/0-4510-2 TI - Evaluation of Equipment, Methods, and Pavement Design Implications for Texas Conditions of the AASHTO 2002 Axle Load Spectra Traffic Methodology: Literature Review and Level 1 Data M3 - Tech Report N1 - United States N1 - 0-4510 UR - https://rosap.ntl.bts.gov/view/dot/87966 ER -
Evaluation of Equipment, Methods, and Pavement Design Implications of the AASHTO 2002 Axle Load Spectra Traffic Methodology

Hong, Feng ;

Prozzi, Jorge A.

2006-08-01 | PDF

Traffic volume influences the geometric requirements of a highway; however, it is only the axle loads of heavy commercial traffic that affect the structural design of pavements. Mechanistic-based pavement design approaches, coupled with faster computers, are changing the way in which traffic loads are accounted for in pavement design. In the M-E De ...

11/24/2025

Title : Evaluation of Equipment, Methods, and Pavement Design Implications of the AASHTO 2002 Axle Load Spectra Traffic Methodology Creator(s) : Hong, Feng;Prozzi, Jorge A.; Corporate Creator(s) : University of Texas at Austin. Center for Transportation Research Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office;United States. Department of Transportation. Federal Highway Administration; Published Date : 2006-08-01 Report Number : FHWA/TX-06/0-4510-1 URL : https://rosap.ntl.bts.gov/view/dot/87965 Hong, Feng and Prozzi, Jorge A. (2006). Evaluation of Equipment, Methods, and Pavement Design Implications of the AASHTO 2002 Axle Load Spectra Traffic Methodology. Hong, Feng and Prozzi, Jorge A. "Evaluation of Equipment, Methods, and Pavement Design Implications of the AASHTO 2002 Axle Load Spectra Traffic Methodology" (2006) Hong, Feng and Prozzi, Jorge A. "Evaluation of Equipment, Methods, and Pavement Design Implications of the AASHTO 2002 Axle Load Spectra Traffic Methodology" , 2006 Export RIS Citation Information. TY - Tech Report AU - Hong, Feng AU - Prozzi, Jorge A. A2 - University of Texas at Austin. Center for Transportation Research A3 - Texas Department of Transportation. Research and Technology Implementation Office A3 - United States. Department of Transportation. Federal Highway Administration AB - Traffic volume influences the geometric requirements of a highway; however, it is only the axle loads of heavy commercial traffic that affect the structural design of pavements. Mechanistic-based pavement design approaches, coupled with faster computers, are changing the way in which traffic loads are accounted for in pavement design. In the M-E Design Guide for the Design of New and Rehabilitated Pavement Structures, traffic loading will be accounted for by using axle load spectra. Axle load spectra consist of the histograms of axle load distribution for each of four axle types: single, tandem, tridem, and quad. Currently, the Texas Department of Transportation (TxDOT) does not have adequate regional representation of weigh data and uses a statewide average to generate load data for most highways, a practice that is inconsistent with the proposed M-E design approach. This research project will assess and evaluate the implications of the axle load spectra approach proposed by the M-E Design Guide and develop guidelines and recommendations that will facilitate the transition from current practice to the application of the new proposed methodology. The evaluation of current equipment and methodology for traffic data collection and data management will be addressed during the first part of the research project. With these findings in hand, guidelines and recommendations for the implementation of the M-E Design Guide will be developed. Finally, implications for the structural design of pavement will be determined. This interim report presents the findings of the initial literature review, a description of traffic data requirements for the M-E Design Guide for the Design of New and Rehabilitated Pavement Structures, and a preliminary sensitivity analysis conducted under typical Texas environmental conditions. AN - dot:87965 ET - Technical (Interim) Report 4510-1 September 2002-August 2003 KW - Axle loads KW - Mechanistic-empirical pavement design KW - Traffic data KW - Weigh in motion LA - English PB - Texas. Department of Transportation PY - 2006-08-01 SN - FHWA/TX-06/0-4510-1 TI - Evaluation of Equipment, Methods, and Pavement Design Implications of the AASHTO 2002 Axle Load Spectra Traffic Methodology M3 - Tech Report N1 - United States N1 - 0-4510 UR - https://rosap.ntl.bts.gov/view/dot/87965 ER -
Automating Variable Speed Limits Using Weather, Traffic and Friction Data

Petzke, Bill ;

Wang, Hao

2025-09-01 | PDF

Variable speed limits (VSL) are useful in promoting highway safety. According to the Federal Highway Administration (FHWA), “the use of VSLs during inclement weather or other less than ideal conditions can improve safety by decreasing the risks associated with traveling at speeds that are higher than appropriate for the conditions.” The project’s r ...

11/24/2025

Title : Automating Variable Speed Limits Using Weather, Traffic and Friction Data Creator(s) : Petzke, Bill;Wang, Hao;Fay, Laura; Corporate Creator(s) : NSF National Center for Atmospheric Research (NCAR);Rutgers University;Montana State University. Western Transportation Institute;Iowa State University. Aurora Program; Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration;Iowa. Department of Transportation; Published Date : 2025-09-01 Report Number : 2022-10 URL : https://rosap.ntl.bts.gov/view/dot/87964 Petzke, Bill et al. (2025). Automating Variable Speed Limits Using Weather, Traffic and Friction Data. Petzke, Bill and Wang, Hao and Fay, Laura "Automating Variable Speed Limits Using Weather, Traffic and Friction Data" (2025) Petzke, Bill et al. "Automating Variable Speed Limits Using Weather, Traffic and Friction Data" , 2025 Export RIS Citation Information. TY - Tech Report AU - Petzke, Bill AU - Wang, Hao AU - Fay, Laura A2 - NSF National Center for Atmospheric Research (NCAR) A2 - Rutgers University A2 - Montana State University. Western Transportation Institute A2 - Iowa State University. Aurora Program A3 - United States. Department of Transportation. Federal Highway Administration A3 - Iowa. Department of Transportation AB - Variable speed limits (VSL) are useful in promoting highway safety. According to the Federal Highway Administration (FHWA), “the use of VSLs during inclement weather or other less than ideal conditions can improve safety by decreasing the risks associated with traveling at speeds that are higher than appropriate for the conditions.” The project’s research objective was to investigate beneficial ways to recommend VSLs under a variety of adverse weather and road surface conditions. This report presents findings from three key research areas: (1) VSL data analysis and machine learning (ML)model development, (2) VSL physical model development, and (3) a review of VSL requirements and state department of transportation (DOT) rules of practice. The research team gathered road weather information system (RWIS) and VSL event data covering the winter and early spring seasons from 2021 through 2023 across two study areas in Wyoming and Utah. Due to the timeframes and locations covered by the collected data, the study datasets included significant adverse and impactful weather events. The team used the collected data to develop an analysis methodology and algorithms for issuing VSLs that consider different weather conditions, terrain types, roadway geometries, and road surface conditions using ML and physical models. To understand how state DOTs currently issue VSLs and to guide research efforts, an extensive survey of VSL requirements and DOT rules of practice across multiple state DOTs was conducted, and the findings were summarized. Summary results from each of the three research areas are discussed in the report, followed by conclusions and recommendations for methods and techniques that state DOTs should consider when implementing VSLs or performing future VSL research. Detailed research findings can be found in the appendices. AN - dot:87964 ET - Final Report KW - Friction KW - Speed KW - Variables KW - Weather KW - Data collection KW - Data analysis KW - Automation KW - Traffic data LA - English PB - Iowa State University. Aurora Program PY - 2025-09-01 SN - 2022-10 TI - Automating Variable Speed Limits Using Weather, Traffic and Friction Data M3 - Tech Report N1 - United States N1 - PF-5(435) UR - https://rosap.ntl.bts.gov/view/dot/87964 ER -
Development of Content for a Flexible Pavement Forensics Knowledge Management System

Krugler, Paul E. ;

Chang-Albitres, Carlos M.

2007-02-01 | PDF

This report documents a cooperative effort to gather and make available information about flexible pavement forensics methods and the valuable knowledge that has resulted from forensic studies of flexible pavements over the past several decades in Texas. The gathered information is provided to the Texas Department of Transportation (TxDOT) for plac ...

11/24/2025

Title : Development of Content for a Flexible Pavement Forensics Knowledge Management System Creator(s) : Krugler, Paul E.;Chang-Albitres, Carlos M.; Corporate Creator(s) : Texas A&M University. Texas Transportation Institute Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office;United States. Department of Transportation. Federal Highway Administration; Published Date : 2007-02-01 Report Number : FHWA/TX-07/0-4505-2 URL : https://rosap.ntl.bts.gov/view/dot/87963 Krugler, Paul E. and Chang-Albitres, Carlos M. (2007). Development of Content for a Flexible Pavement Forensics Knowledge Management System. Krugler, Paul E. and Chang-Albitres, Carlos M. "Development of Content for a Flexible Pavement Forensics Knowledge Management System" (2007) Krugler, Paul E. and Chang-Albitres, Carlos M. "Development of Content for a Flexible Pavement Forensics Knowledge Management System" , 2007 Export RIS Citation Information. TY - Tech Report AU - Krugler, Paul E. AU - Chang-Albitres, Carlos M. A2 - Texas A&M University. Texas Transportation Institute A3 - Texas Department of Transportation. Research and Technology Implementation Office A3 - United States. Department of Transportation. Federal Highway Administration AB - This report documents a cooperative effort to gather and make available information about flexible pavement forensics methods and the valuable knowledge that has resulted from forensic studies of flexible pavements over the past several decades in Texas. The gathered information is provided to the Texas Department of Transportation (TxDOT) for placement into TxDOT’s internal knowledge management system. A glossary of flexible pavement forensic-related terms was developed and used in a systematic manner to properly and consistently associate key words with the information documents being stored. AN - dot:87963 ET - September 2005 - August 2006 KW - Flexible pavements KW - Forensic science KW - Knowledge management LA - English PB - Texas. Department of Transportation PY - 2007-02-01 SN - FHWA/TX-07/0-4505-2 TI - Development of Content for a Flexible Pavement Forensics Knowledge Management System M3 - Tech Report N1 - United States N1 - 0-4505 UR - https://rosap.ntl.bts.gov/view/dot/87963 ER -
Development of a Rigid Pavement Forensics Knowledge Management System to Retain TxDOT Corporate Knowledge

Krugler, Paul E. ;

Chang-Albitres, Carlos M.

2006-02-01 | PDF

This report summarizes cooperative efforts to gather and make available in a knowledge management system both tacit and currently documented knowledge of rigid pavement forensic methods, tools, and the valuable insights into rigid pavement performance principles and practices gained during forensic studies over several decades. Tacit knowledge was ...

11/24/2025

Title : Development of a Rigid Pavement Forensics Knowledge Management System to Retain TxDOT Corporate Knowledge Creator(s) : Krugler, Paul E.;Chang-Albitres, Carlos M.;Robideau, Robert L; Corporate Creator(s) : Texas A&M University. Texas Transportation Institute Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office;United States. Department of Transportation. Federal Highway Administration; Published Date : 2006-02-01 Report Number : FHWA/TX-06/0-4505-1 URL : https://rosap.ntl.bts.gov/view/dot/87962 Krugler, Paul E. et al. (2006). Development of a Rigid Pavement Forensics Knowledge Management System to Retain TxDOT Corporate Knowledge. Krugler, Paul E. and Chang-Albitres, Carlos M. and Robideau, Robert L "Development of a Rigid Pavement Forensics Knowledge Management System to Retain TxDOT Corporate Knowledge" (2006) Krugler, Paul E. et al. "Development of a Rigid Pavement Forensics Knowledge Management System to Retain TxDOT Corporate Knowledge" , 2006 Export RIS Citation Information. TY - Tech Report AU - Krugler, Paul E. AU - Chang-Albitres, Carlos M. AU - Robideau, Robert L A2 - Texas A&M University. Texas Transportation Institute A3 - Texas Department of Transportation. Research and Technology Implementation Office A3 - United States. Department of Transportation. Federal Highway Administration AB - This report summarizes cooperative efforts to gather and make available in a knowledge management system both tacit and currently documented knowledge of rigid pavement forensic methods, tools, and the valuable insights into rigid pavement performance principles and practices gained during forensic studies over several decades. Tacit knowledge was gathered using a structured interview process involving current and retired department personnel, as well as selected academia. A method of storing and efficiently retrieving valued information from i-Way, Texas Department of Transportation's learning content management system, was also developed. A glossary of rigid pavement forensic-related terms was developed and used in a systematic manner to properly and consistently associate key words with the information documents being stored. AN - dot:87962 ET - September 2004 - August 2005 KW - Forensic science KW - Information storage and retrieval systems KW - Interviewing KW - Knowledge management KW - Pavement performance KW - Personnel KW - Rigid pavements LA - English PB - Texas. Department of Transportation PY - 2006-02-01 SN - FHWA/TX-06/0-4505-1 TI - Development of a Rigid Pavement Forensics Knowledge Management System to Retain TxDOT Corporate Knowledge M3 - Tech Report N1 - United States N1 - 0-4505 UR - https://rosap.ntl.bts.gov/view/dot/87962 ER -
Evaluation of Bonded Overlay and Dowel Bar Retrofit on 1–40

Hubbard, Tom ;

Williams, Gary

1999-05-01 | PDF

The Oklahoma Department of Transportation (ODOT) has completed a rehabilitation project on a 1,000-foot-long section of existing jointed PCC pavement. The section is located in the westbound traffic lanes of 1-40, in Canadian County. As jointed PCC pavements age, many develop faults, resulting in poor ride quality (roughness). Faults can be removed ...

11/24/2025

Title : Evaluation of Bonded Overlay and Dowel Bar Retrofit on 1–40 Creator(s) : Hubbard, Tom;Williams, Gary; Corporate Creator(s) : Oklahoma. Department of Transportation Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration Published Date : 1999-05-01 Report Number : FHWA/OK 99 URL : https://rosap.ntl.bts.gov/view/dot/87961 Hubbard, Tom and Williams, Gary (1999). Evaluation of Bonded Overlay and Dowel Bar Retrofit on 1–40. Hubbard, Tom and Williams, Gary "Evaluation of Bonded Overlay and Dowel Bar Retrofit on 1–40" (1999) Hubbard, Tom and Williams, Gary "Evaluation of Bonded Overlay and Dowel Bar Retrofit on 1–40" , 1999 Export RIS Citation Information. TY - Tech Report AU - Hubbard, Tom AU - Williams, Gary A2 - Oklahoma. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - The Oklahoma Department of Transportation (ODOT) has completed a rehabilitation project on a 1,000-foot-long section of existing jointed PCC pavement. The section is located in the westbound traffic lanes of 1-40, in Canadian County. As jointed PCC pavements age, many develop faults, resulting in poor ride quality (roughness). Faults can be removed, and ride quality restored, by grinding, but this often proves to be only a short-term solution. Longer lasting solutions generally require addressing structural factors, such as void formation in the subgrade and lack of load transfer between slabs. Another common problem associated with aging pavements is loss of surface friction characteristics. Surface friction may be restored by grinding or by placing an overlay. Traditional methods of improving load transfer between slabs generally require saw cutting a section of each slab, removing it, drilling holes into the adjacent slab and fastening dowel bars into the holes with epoxy. The joint then has to re-formed, and new concrete poured to replace the removed section. These methods are labor-intensive and expensive. Work done on the rehabilitated section consisted of retrofitting Load Transfer Units (dowel bars with expansion caps} between the slabs, and placing a thin, bonded, fiber-reinforced PCC overlay. The rehabilitation done on this project has the potential of restoring ride quality, improving load transfer between slabs, and improving surface friction characteristics using a faster, less labor-intensive process. ODOT has not used this method in the past. The construction operations will be evaluated on a constructability standpoint. The completed overlay will be evaluated with the goal of projecting the long-term performance of the rehabilitated section. AN - dot:87961 ET - Construction Report, October, 1998 KW - Bonding KW - Concrete overlays KW - Fiber reinforced concrete KW - Evaluation KW - Retrofitting KW - Load transfer KW - Dowel bar retrofit KW - Overlays (Pavements) LA - English PB - Oklahoma. Dept of Transportation PY - 1999-05-01 SN - FHWA/OK 99 TI - Evaluation of Bonded Overlay and Dowel Bar Retrofit on 1–40 M3 - Tech Report N1 - United States N1 - 2404 UR - https://rosap.ntl.bts.gov/view/dot/87961 ER -
Continued Evaluation of Microcracking in Texas

Sebesta, Stephen

2005-11-01 | PDF

This project focused on evaluating the effectiveness of the microcracking concept for reducing shrinkage cracking in cement-treated bases (CTB). Microcracking can be defined as the application of several vibratory roller passes to the cement-treated base at a short curing stage, typically after 1 to 3 days, to create a fine network of cracks. Previ ...

11/24/2025

Title : Continued Evaluation of Microcracking in Texas Creator(s) : Sebesta, Stephen Corporate Creator(s) : Texas A&M University. Texas Transportation Institute Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office;United States. Department of Transportation. Federal Highway Administration; Published Date : 2005-11-01 Report Number : FHWA/TX-06/0-4502-2 URL : https://rosap.ntl.bts.gov/view/dot/87960 Sebesta, Stephen (2005). Continued Evaluation of Microcracking in Texas. Sebesta, Stephen "Continued Evaluation of Microcracking in Texas" (2005) Sebesta, Stephen "Continued Evaluation of Microcracking in Texas" , 2005 Export RIS Citation Information. TY - Tech Report AU - Sebesta, Stephen A2 - Texas A&M University. Texas Transportation Institute A3 - Texas Department of Transportation. Research and Technology Implementation Office A3 - United States. Department of Transportation. Federal Highway Administration AB - This project focused on evaluating the effectiveness of the microcracking concept for reducing shrinkage cracking in cement-treated bases (CTB). Microcracking can be defined as the application of several vibratory roller passes to the cement-treated base at a short curing stage, typically after 1 to 3 days, to create a fine network of cracks. Previous report 0-4502-1 described activities undertaken during the first two years of this research project to validate and develop guidelines for the application of microcracking. This report (4502-2) details results from continued monitoring of field test sections, along with details from new microcracking test sites constructed between September 2004 and August 2005. Based upon the results, this report presents revised guidelines as an Appendix for the application of microcracking to reduce the risk of reflective cracking problems from cement-treated bases. Even if implemented on only 25 percent of Texas Department of Transportation CTB projects, it is estimated microcracking could save the department approximately $1.5 million in net present value (NPV) costs through reductions in future crack sealing operations. Given the range of observed effectiveness of microcracking, full implementation could save between $3.3 and $8.6 million in yearly NPV costs. AN - dot:87960 ET - September 2004-August 2005 KW - Falling weight deflectometers KW - Microcracking KW - Reflection cracking KW - Road rollers KW - Cement treated soils KW - Cost effectiveness KW - Base course (Pavements) LA - English PB - Texas. Department of Transportation PY - 2005-11-01 SN - FHWA/TX-06/0-4502-2 TI - Continued Evaluation of Microcracking in Texas M3 - Tech Report N1 - United States N1 - 0-4502 UR - https://rosap.ntl.bts.gov/view/dot/87960 ER -
Field Performance Evaluation of Crafco ‘Roadsaver’ Self-Leveling Sealant

Sawyer, Michael E.

1998-10-01 | PDF

On July 24, 1995, joints in a 61m (200 ft.) test section on project STP-324(78) were sealed with Crafco Roadsaver. Crafco Roadsaver is a self-leveling silicone sealant. Joints in the remainder of the project were sealed with an approved self-leveling sealant. A 61 m (200 ft.) control section, with joints sealed with the approved sealant, was select ...

11/24/2025

Title : Field Performance Evaluation of Crafco ‘Roadsaver’ Self-Leveling Sealant Creator(s) : Sawyer, Michael E. Corporate Creator(s) : Oklahoma. Department of Transportation Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration Published Date : 1998-10-01 Report Number : FHWN/OK 98(08) URL : https://rosap.ntl.bts.gov/view/dot/87959 Sawyer, Michael E. (1998). Field Performance Evaluation of Crafco ‘Roadsaver’ Self-Leveling Sealant. Sawyer, Michael E. "Field Performance Evaluation of Crafco ‘Roadsaver’ Self-Leveling Sealant" (1998) Sawyer, Michael E. "Field Performance Evaluation of Crafco ‘Roadsaver’ Self-Leveling Sealant" , 1998 Export RIS Citation Information. TY - Tech Report AU - Sawyer, Michael E. A2 - Oklahoma. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - On July 24, 1995, joints in a 61m (200 ft.) test section on project STP-324(78) were sealed with Crafco Roadsaver. Crafco Roadsaver is a self-leveling silicone sealant. Joints in the remainder of the project were sealed with an approved self-leveling sealant. A 61 m (200 ft.) control section, with joints sealed with the approved sealant, was selected for comparison. According to contractor's employees who applied the sealant, there was no noticeable difference in the difficulty of application between the two sealants. The Crafco Roadsaver sealant appeared to have good adhesion to the sides of the joints. Bubbles formed in the Crafco Roadsaver sealant over most (approximately 60%) of the test section but were later found to be only a surface problem. Both the test and control sections were monitored over a three-year evaluation period. Both sealants performed well and had no failures during the evaluation period. The conclusion of this author is that no reason can be found for the specifications for use of self-leveling silicone sealants not to be rewritten to include Crafco Roadsaver Sealant. AN - dot:87959 ET - Final Report: July, 1995 - August, 1998 KW - Joints (Engineering) KW - Sealing compounds KW - Strength of materials KW - Testing KW - Specifications KW - Evaluation KW - Performance KW - Crafco KW - Roadsaver LA - English PB - Oklahoma. Department of Transportation PY - 1998-10-01 SN - FHWN/OK 98(08) TI - Field Performance Evaluation of Crafco ‘Roadsaver’ Self-Leveling Sealant M3 - Tech Report N1 - United States N1 - 2700 UR - https://rosap.ntl.bts.gov/view/dot/87959 ER -
Semiactive Vibration Absorbers (SAVA) at the I-35 Walnut Creek Bridge

Patten, William Neff

1997-09-01 | PDF

The project was undertaken to develop and field test an automatically controlled bridge mounted vibration absorber. The system, referred to as a semiactive vibration absorber (SAVA) consists of a hydraulic cylinder coupled to structural steel elements that bolt on to an existing bridge. The hydraulic cylinder (HC) is equipped with a computer-contro ...

11/24/2025

Title : Semiactive Vibration Absorbers (SAVA) at the I-35 Walnut Creek Bridge Creator(s) : Patten, William Neff Corporate Creator(s) : University of Oklahoma Corporate Contributor(s) : Oklahoma. Department of Transportation;United States. Department of Transportation. Federal Highway Administration; Published Date : 1997-09-01 Report Number : FHWA/OK 97(08) URL : https://rosap.ntl.bts.gov/view/dot/87958 Patten, William Neff (1997). Semiactive Vibration Absorbers (SAVA) at the I-35 Walnut Creek Bridge. Patten, William Neff "Semiactive Vibration Absorbers (SAVA) at the I-35 Walnut Creek Bridge" (1997) Patten, William Neff "Semiactive Vibration Absorbers (SAVA) at the I-35 Walnut Creek Bridge" , 1997 Export RIS Citation Information. TY - Tech Report AU - Patten, William Neff A2 - University of Oklahoma A3 - Oklahoma. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - The project was undertaken to develop and field test an automatically controlled bridge mounted vibration absorber. The system, referred to as a semiactive vibration absorber (SAVA) consists of a hydraulic cylinder coupled to structural steel elements that bolt on to an existing bridge. The hydraulic cylinder (HC) is equipped with a computer-controlled valve and sensors. The sensors are used to detect the motion of the bridge girders that results from the passage of heavy multi-axle trucks. The research resulted in the establishment of a smart software code that opens and closes the valve on the HC at appropriate times during the vibration. The modulation of the valve affords an optimized combination of both stuffiness and damping, which results in a significant reduction of vibration amplitude and maximum stress in the girders. Field testing of the SAVA system was conducted on the Walnut Creek Bridge at the 92.7-mile marker on I-35 between Dallas, TX and Oklahoma City, OK. The bridge has a two-lane, 38' wide composite deck, supported by five 134 lb./ft girders mounted at 8' 611 centers. The continuous 400' long girders were supported at 100-foot intervals by three piers and abutments at either end of the bridge. The SAVA system was installed in the Summer 1996 on one span of the bridge and field-tested for over 12 months. The results indicate a nominal reduction of truck-induced stress and deflection of over 55%. The tests were conducted using four multi-axle trucks with weights ranging from 27 klbs to 120 klbs, traveling at the posted speed limit. NCHRP 299 (1989) was used to determine the remaining safe life of the bridge. The most conservative estimate indicates that the span, in which the SAVA system is mounted, gained an additional 60 years of safe life and over 150 years of mean life. The estimated safe life of the bridge prior to the installation of the SAVA system was -7 yean. The system operates on a 12-volt battery that is rated to last over two years. The instrumentation required include two sensors (per actuator). The entire SAVA system was mounted from below, without having to impede traffic. The estimated cost of the system is approximately 7% to 10% of the cost to replace the bridge. The performance of the system and the integrity of the electronics is routinely checked via a remote monitoring system. The work proved conclusively that the semiactive vibration absorber system is robust to climate conditions and is inherently safe. A patent has been awarded (# 5545372) for this technology. AN - dot:87958 ET - Final Report KW - State departments of transportation KW - Project management KW - Field tests KW - Bridge construction KW - Axle loads KW - Vibration KW - Absorbents LA - English PB - Oklahoma. Dept of Transportation PY - 1997-09-01 SN - FHWA/OK 97(08) TI - Semiactive Vibration Absorbers (SAVA) at the I-35 Walnut Creek Bridge M3 - Tech Report N1 - United States N1 - 2125 UR - https://rosap.ntl.bts.gov/view/dot/87958 ER -
Variability in Bituminous Concrete Pavement Construction

Ahmed, Samir A

1997-07-01 | PDF

Knowledge of the variability in acceptable bituminous concrete pavement materials and construction in Oklahoma is a prerequisite for the development of successful QA specifications. Toward this end, the ODOT commissioned this study to: (1) develop reliable estimates of the overall variability in the quality characteristics, (2) determine the compon ...

11/24/2025

Title : Variability in Bituminous Concrete Pavement Construction Creator(s) : Ahmed, Samir A Corporate Creator(s) : Oklahoma State University. School of Civil & Environmental Engineering Corporate Contributor(s) : Oklahoma. Department of Transportation;United States. Department of Transportation. Federal Highway Administration; Published Date : 1997-07-01 URL : https://rosap.ntl.bts.gov/view/dot/87957 Ahmed, Samir A (1997). Variability in Bituminous Concrete Pavement Construction. Ahmed, Samir A "Variability in Bituminous Concrete Pavement Construction" (1997) Ahmed, Samir A "Variability in Bituminous Concrete Pavement Construction" , 1997 Export RIS Citation Information. TY - Tech Report AU - Ahmed, Samir A A2 - Oklahoma State University. School of Civil & Environmental Engineering A3 - Oklahoma. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - Knowledge of the variability in acceptable bituminous concrete pavement materials and construction in Oklahoma is a prerequisite for the development of successful QA specifications. Toward this end, the ODOT commissioned this study to: (1) develop reliable estimates of the overall variability in the quality characteristics, (2) determine the components of variation due to materials and processes, sampling, and testing, (3) assess the tolerances of both the existing and proposed QA specifications, (4) investigate the capability of HMA production/construction processes, (5) evaluate the adequacy of the nuclear density gauge and the nuclear asphalt content gauge for process control and product acceptance purposes, and (6) recommend changes to the QA specifications and/or the QA system, if warranted. AN - dot:87957 ET - Final Report KW - Bituminous concrete pavements KW - Road construction KW - Aggregate gradation KW - Hot mix asphalt KW - Specifications LA - English PB - Oklahoma. Department of Transportation PY - 1997-07-01 TI - Variability in Bituminous Concrete Pavement Construction M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/87957 ER -
Hazardous Materials Rail Buffer Car Break Even Analysis

O'Rourke, Laurence

2024-07-25 | PDF

Currently, the Pipeline and Hazardous Materials Safety Administration (PHMSA) requires buffer cars to separate train crews from cars containing hazardous materials. The National Transportation Safety Board (NTSB) recommended “all trains have a minimum of five non-placarded cars between any locomotive or occupied equipment transporting hazardous mat ...

11/24/2025

Title : Hazardous Materials Rail Buffer Car Break Even Analysis Creator(s) : O'Rourke, Laurence Corporate Creator(s) : ICF Corporate Contributor(s) : United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration Published Date : 2024-07-25 URL : https://rosap.ntl.bts.gov/view/dot/87956 O'Rourke, Laurence (2024). Hazardous Materials Rail Buffer Car Break Even Analysis. O'Rourke, Laurence "Hazardous Materials Rail Buffer Car Break Even Analysis" (2024) O'Rourke, Laurence "Hazardous Materials Rail Buffer Car Break Even Analysis" , 2024 Export RIS Citation Information. TY - Memorandum AU - O'Rourke, Laurence A2 - ICF A3 - United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration AB - Currently, the Pipeline and Hazardous Materials Safety Administration (PHMSA) requires buffer cars to separate train crews from cars containing hazardous materials. The National Transportation Safety Board (NTSB) recommended “all trains have a minimum of five non-placarded cars between any locomotive or occupied equipment transporting hazardous materials, regardless of train length and consist.” Though public agencies have emphasized buffer cars as a way to protect the train crew, the costs and benefits of using buffer cars have not been well-analyzed. This report describes a break-even analysis to determine the number of avoided fatalities, injuries, and damages to break even on the cost of implementing a 5-buffer car requirement. The study considers capital, operating, fuel, and other costs associated with adding buffer cars. It also assesses the risk to crew from HAZMAT incidents on rail. AN - dot:87956 KW - Hazardous materials KW - Location KW - Railroad cars KW - Railroad safety KW - Railroad vehicle operations KW - Regulations KW - Railroad transportation KW - Economic analysis KW - Buffer Cars (Railroads) LA - English PB - United States. Dept. of Transportation. Pipeline and Hazardous Materials Safety Administration PY - 2024-07-25 TI - Hazardous Materials Rail Buffer Car Break Even Analysis M3 - Memorandum N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/87956 ER -
Separation Distance of Hazardous Materials Cars and Train Crews and/or Locomotives - Literature Review (Buffer Car Research Study)

Sullivan, Laura ;

Raney, Mark

2022-07-01 | PDF

Train makeup and switching operations are governed by car placement regulations, which establish effective separation distance requirements by means of “buffer cars”. The separation distance requirements in the U.S. were established in 1922 and have remained largely unchanged, despite dramatic changes in rail operations, rail equipment, and the var ...

11/24/2025

Title : Separation Distance of Hazardous Materials Cars and Train Crews and/or Locomotives - Literature Review (Buffer Car Research Study) Creator(s) : Sullivan, Laura;Raney, Mark;Paleo, Emilio; Corporate Creator(s) : John A. Volpe National Transportation Systems Center (U.S.) Corporate Contributor(s) : United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration. Office of Hazardous Materials Safety Published Date : 2022-07-01 Report Number : DOT-VNTSC-PHMSA-21-02 URL : https://rosap.ntl.bts.gov/view/dot/87955 Sullivan, Laura et al. (2022). Separation Distance of Hazardous Materials Cars and Train Crews and/or Locomotives - Literature Review (Buffer Car Research Study). Sullivan, Laura and Raney, Mark and Paleo, Emilio "Separation Distance of Hazardous Materials Cars and Train Crews and/or Locomotives - Literature Review (Buffer Car Research Study)" (2022) Sullivan, Laura et al. "Separation Distance of Hazardous Materials Cars and Train Crews and/or Locomotives - Literature Review (Buffer Car Research Study)" , 2022 Export RIS Citation Information. TY - Tech Report AU - Sullivan, Laura AU - Raney, Mark AU - Paleo, Emilio A2 - John A. Volpe National Transportation Systems Center (U.S.) A3 - United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration. Office of Hazardous Materials Safety AB - Train makeup and switching operations are governed by car placement regulations, which establish effective separation distance requirements by means of “buffer cars”. The separation distance requirements in the U.S. were established in 1922 and have remained largely unchanged, despite dramatic changes in rail operations, rail equipment, and the variety and quantities of HM being transported. The purpose of this research (Volpe Buffer Car Research Study) is to inform future PHMSA research and potential rulemakings on the separation distance of HM from train crews and/or occupied locomotives. The study entailed conducting a focused literature review and consultations with the Federal Railroad Administration and Transport Canada. The objective of the study being to identify and review existing relevant studies; identify gaps in the existing studies; determine what conclusions, if any, can be drawn from the existing studies; and provide recommendations for further research. AN - dot:87955 ET - May 2019 – July 2022 KW - Hazardous materials KW - Location KW - Railroad cars KW - Railroad safety KW - Railroad vehicle operations KW - Regulations KW - Railroad transportation KW - Literature reviews KW - Buffer Cars (Railroads) LA - English PB - John A. Volpe National Transportation Systems Center (U.S.) PY - 2022-07-01 SN - DOT-VNTSC-PHMSA-21-02 TI - Separation Distance of Hazardous Materials Cars and Train Crews and/or Locomotives - Literature Review (Buffer Car Research Study) M3 - Tech Report N1 - United States N1 - 693JK319N000012 UR - https://rosap.ntl.bts.gov/view/dot/87955 ER -
Bridge Inspector's Training Manual 90

Hartle, Raymond A. ;

Amrhein, William J.

1991-05-01 | PDF

This document, the Bridge Inspector's Training Manual (BITM) 90, is a comprehensive manual on programs, procedures, and techniques for inspecting and evaluating a variety of in-service highway bridges. It is intended to replace the BITM 70 which was first published in 1970 to assist in training highway personnel for the new discipline of bridge saf ...

11/24/2025

Title : Bridge Inspector's Training Manual 90 Creator(s) : Hartle, Raymond A.;Amrhein, William J.;Wilson, Kenneth E.;Baughman, Dennis R.;Tkacs, John J.; Corporate Creator(s) : Michael Baker Jr., Inc. Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration;United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center; Contributor(s) : Schubert, Charles M.;Hooks, John M.; Published Date : 1991-05-01 Report Number : FHWA-PD-91-015 URL : https://rosap.ntl.bts.gov/view/dot/87954 Hartle, Raymond A. et al. (1991). Bridge Inspector's Training Manual 90. Hartle, Raymond A. et al. "Bridge Inspector's Training Manual 90" (1991) Hartle, Raymond A. et al. "Bridge Inspector's Training Manual 90" , 1991 Export RIS Citation Information. TY - Tech Report AU - Hartle, Raymond A. AU - Amrhein, William J. AU - Wilson, Kenneth E. AU - Baughman, Dennis R. AU - Tkacs, John J. A2 - Michael Baker Jr., Inc. A3 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center A4 - Schubert, Charles M. A4 - Hooks, John M. A4 - Hooks, John M. AB - This document, the Bridge Inspector's Training Manual (BITM) 90, is a comprehensive manual on programs, procedures, and techniques for inspecting and evaluating a variety of in-service highway bridges. It is intended to replace the BITM 70 which was first published in 1970 to assist in training highway personnel for the new discipline of bridge safety inspection. BITM 70 has been in use for 20 years and has been the basis for several training programs varying in length from a few days to two weeks. Comprehensive supplements to BITM 70 have been developed to cover inspection of fracture critical bridge members, movable bridges, and culverts. BITM 90 is a revision and upgrading of the previous manual. Improved bridge inspection techniques are presented, and state-of-the-art inspection equipment is included. New or expanded coverage is provided on culverts, fracture critical members, cable-stayed bridges, prestressed segmental bridges, and underwater inspection. Previous supplemental manuals on culvert inspection, fracture critical inspection, movable bridge inspection, and nondestructive testing are excerpted and referenced. These previous special manuals are still valid supplements to BITM 90. A three-week comprehensive training program on bridge inspection, based on the BITM 90, has been developed. The program consists of a one-week course, "Engineering Concepts for Bridge Inspectors," and a two-week course, "Safety Inspection of In-Service Bridges." Together, these two courses meet the definition of a comprehensive training program in bridge inspection as defined in the National Bridge Inspection Standards. The one-week course is optional for technicians, inspectors, or engineers who have an adequate background in bridge engineering concepts. AN - dot:87954 ET - Final Manual KW - Bridges KW - Inspection KW - Guidelines KW - Inspectors KW - Manuals LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 1991-05-01 SN - FHWA-PD-91-015 TI - Bridge Inspector's Training Manual 90 M3 - Tech Report N1 - United States N1 - DTFH61-89-C-00103 N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87954 ER -
Bridge Inspector’s Reference Manual (BIRM) [2015]

Ryan, Thomas W. ;

Mann, Eric

2015-11-01 | PDF

This document, the Bridge Inspector’s Reference Manual (BIRM), is a comprehensive manual on programs, procedures, and techniques for inspecting and evaluating a variety of in-service highway bridges. It is intended to replace the BITM 90 which was first published in 1991 to assist in training highway personnel for the new discipline of bridge safet ...

11/24/2025

Title : Bridge Inspector’s Reference Manual (BIRM) [2015] Creator(s) : Ryan, Thomas W.;Mann, Eric;Chill, Zachary M.;Ott, Bryan T.; Corporate Creator(s) : Michael Baker International Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration;National Highway Institute (U.S.); Contributor(s) : Hartle, Raymond A.;Rosick, Mary P.;Jones, Larry E.;Ward, Louisa;Hooks, John M.;Everett, Thomas D.;Moss, Gary;Burrows, Shay; Published Date : 2015-11-01 Report Number : FHWA-NHI-16-013 URL : https://rosap.ntl.bts.gov/view/dot/87953 Ryan, Thomas W. et al. (2015). Bridge Inspector’s Reference Manual (BIRM) [2015]. Ryan, Thomas W. et al. "Bridge Inspector’s Reference Manual (BIRM) [2015]" (2015) Ryan, Thomas W. et al. "Bridge Inspector’s Reference Manual (BIRM) [2015]" , 2015 Export RIS Citation Information. TY - Tech Report AU - Ryan, Thomas W. AU - Mann, Eric AU - Chill, Zachary M. AU - Ott, Bryan T. A2 - Michael Baker International A3 - United States. Department of Transportation. Federal Highway Administration A3 - National Highway Institute (U.S.) A4 - Hartle, Raymond A. A4 - Rosick, Mary P. A4 - Jones, Larry E. A4 - Ward, Louisa A4 - Hooks, John M. A4 - Everett, Thomas D. A4 - Moss, Gary A4 - Burrows, Shay A4 - Jones, Larry E.;Ward, Louisa M. AB - This document, the Bridge Inspector’s Reference Manual (BIRM), is a comprehensive manual on programs, procedures, and techniques for inspecting and evaluating a variety of in-service highway bridges. It is intended to replace the BITM 90 which was first published in 1991 to assist in training highway personnel for the new discipline of bridge safety inspection. BITM 90 replaced BITM 70 which had been in use for 20 years and has been the basis for several training programs varying in length from a few days to two weeks. Comprehensive supplements to BITM 70 have been developed to cover inspection of fracture critical bridge members, and culverts are now covered in the BIRM. The BIRM is a revision and upgrading of the previous manual. Improved Bridge Inspection techniques are presented, and state-of-the-art inspection equipment is included. New or expanded coverage is provided on culverts, fracture critical members, cable-stayed bridges, prestressed segmental bridges, moveable bridge inspection, underwater inspection, and non-destructive evaluation and critical findings. A three-week comprehensive training program on bridge inspection, based on the BIRM, has been developed. The program consists of a one-week course, FHWA-NHI Course No 130054, “Engineering Concepts for Bridge Inspectors,” and a two-week course, FHWA-NHI Course No 130055, “Safety Inspection of In-Service Bridges.” Together, these two courses meet the definition of a comprehensive training program in bridge inspection as defined in the National Bridge Inspection Standards. Successful completion of the prerequisite FHWA-NHI Course No. 130054 is required to register for this FHWA-NHI 130055 Course. FHWA-NHI Course No. 130101, Introduction to Safety Inspection of In-Service Bridges, web based training or FHWA-NHI Course No. 130101a web based training assessment may be substituted for FHWA-NHI Course No. 130054. AN - dot:87953 ET - Final Manual KW - Bridges KW - Culverts KW - Inspection KW - Structural health monitoring KW - Underwater structures LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2015-11-01 SN - FHWA-NHI-16-013 TI - Bridge Inspector’s Reference Manual (BIRM) [2015] M3 - Tech Report N1 - United States N1 - DTFH61-06-T-00009-T09-B07 N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87953 ER -
Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 7, Data Complete Through 11/14/2025

United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information

2025-11-19 | Special Issue - Weekly Motor Fuel Report | PDF

The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration ...

11/24/2025

Title : Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 7, Data Complete Through 11/14/2025 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Published Date : 2025-11-19 Series : Special Issue - Weekly Motor Fuel Report URL : https://rosap.ntl.bts.gov/view/dot/87952 United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2025). Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 7, Data Complete Through 11/14/2025. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information "Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 7, Data Complete Through 11/14/2025" (2025) United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information "Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 7, Data Complete Through 11/14/2025" , 2025 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information AB - The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration (EIA) website. The EIA publishes the average daily amount of gasoline supplied in barrels, which HPPI converts to an average number of gallons of gasoline per week. AN - dot:87952 KW - Fuel consumption KW - Gasoline KW - Supply KW - Traffic volume KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information PY - 2025-11-19 T2 - Special Issue - Weekly Motor Fuel Report TI - Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 7, Data Complete Through 11/14/2025 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87952 ER -
Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 6, Data Complete Through 11/7/2025

United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information

2025-11-13 | Special Issue - Weekly Motor Fuel Report | PDF

The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration ...

11/24/2025

Title : Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 6, Data Complete Through 11/7/2025 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Published Date : 2025-11-13 Series : Special Issue - Weekly Motor Fuel Report URL : https://rosap.ntl.bts.gov/view/dot/87951 United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2025). Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 6, Data Complete Through 11/7/2025. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information "Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 6, Data Complete Through 11/7/2025" (2025) United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information "Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 6, Data Complete Through 11/7/2025" , 2025 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information AB - The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration (EIA) website. The EIA publishes the average daily amount of gasoline supplied in barrels, which HPPI converts to an average number of gallons of gasoline per week. AN - dot:87951 KW - Fuel consumption KW - Gasoline KW - Supply KW - Traffic volume KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information PY - 2025-11-13 T2 - Special Issue - Weekly Motor Fuel Report TI - Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 6, Data Complete Through 11/7/2025 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87951 ER -
National Travel Time Dashboard: Interstate Highways, August 2025

United States. Department of Transportation. Federal Highway Administration. Office of Operations

2025-08-01 | National Travel Time Dashboard: Interstate Highways | PDF

The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma ...

11/24/2025

Title : National Travel Time Dashboard: Interstate Highways, August 2025 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2025-08-01 Series : National Travel Time Dashboard: Interstate Highways URL : https://rosap.ntl.bts.gov/view/dot/87950 United States. Department of Transportation. Federal Highway Administration. Office of Operations (2025). National Travel Time Dashboard: Interstate Highways, August 2025. United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, August 2025" (2025) United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, August 2025" , 2025 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Management Research Data Set (NPMRDS) and traffic volume data from the Highway Performance Monitoring System (HPMS). The report includes Interstate highway data from all 50 U.S. states and the District of Columbia. AN - dot:87950 KW - Traffic congestion KW - Travel time KW - Traffic volume KW - Urban transportation KW - Reliability (Statistics) KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2025-08-01 T2 - National Travel Time Dashboard: Interstate Highways TI - National Travel Time Dashboard: Interstate Highways, August 2025 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87950 ER -
National Travel Time Dashboard: Interstate Highways, July 2025

United States. Department of Transportation. Federal Highway Administration. Office of Operations

2025-07-01 | National Travel Time Dashboard: Interstate Highways | PDF

The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma ...

11/24/2025

Title : National Travel Time Dashboard: Interstate Highways, July 2025 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2025-07-01 Series : National Travel Time Dashboard: Interstate Highways URL : https://rosap.ntl.bts.gov/view/dot/87949 United States. Department of Transportation. Federal Highway Administration. Office of Operations (2025). National Travel Time Dashboard: Interstate Highways, July 2025. United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, July 2025" (2025) United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, July 2025" , 2025 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Management Research Data Set (NPMRDS) and traffic volume data from the Highway Performance Monitoring System (HPMS). The report includes Interstate highway data from all 50 U.S. states and the District of Columbia. AN - dot:87949 KW - Traffic congestion KW - Travel time KW - Traffic volume KW - Urban transportation KW - Reliability (Statistics) KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2025-07-01 T2 - National Travel Time Dashboard: Interstate Highways TI - National Travel Time Dashboard: Interstate Highways, July 2025 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87949 ER -
Experimental Products Evaluation Program Annual Report: 1996

Williams, Gary

1997-07-01 | PDF

This publication consists of a listing of experimental products that are being, or have been, evaluated by The Oklahoma Department of Transportation, or other transportation agencies. The listing is continuously updated as new information is received. A status of the evaluation is given for each item, showing the progress or result of the evaluatio ...

11/24/2025

Title : Experimental Products Evaluation Program Annual Report: 1996 Creator(s) : Williams, Gary Corporate Creator(s) : Oklahoma. Department of Transportation Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration Published Date : 1997-07-01 Report Number : FHWA/OK 97(07) URL : https://rosap.ntl.bts.gov/view/dot/87948 Williams, Gary (1997). Experimental Products Evaluation Program Annual Report: 1996. Williams, Gary "Experimental Products Evaluation Program Annual Report: 1996" (1997) Williams, Gary "Experimental Products Evaluation Program Annual Report: 1996" , 1997 Export RIS Citation Information. TY - Tech Report AU - Williams, Gary A2 - Oklahoma. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - This publication consists of a listing of experimental products that are being, or have been, evaluated by The Oklahoma Department of Transportation, or other transportation agencies. The listing is continuously updated as new information is received. A status of the evaluation is given for each item, showing the progress or result of the evaluation. AN - dot:87948 ET - Annual Report: January, 1996 - December, 1996 KW - Experiments KW - Products KW - Equipment KW - Annual reports KW - Paving materials KW - Patching KW - Culverts KW - Drainage KW - Experimental products and equipment LA - English PB - Oklahoma. Department of Transportation PY - 1997-07-01 SN - FHWA/OK 97(07) TI - Experimental Products Evaluation Program Annual Report: 1996 M3 - Tech Report N1 - United States N1 - 2700 UR - https://rosap.ntl.bts.gov/view/dot/87948 ER -
National Travel Time Dashboard: Interstate Highways, June 2025

United States. Department of Transportation. Federal Highway Administration. Office of Operations

2025-06-01 | National Travel Time Dashboard: Interstate Highways | PDF

The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma ...

11/24/2025

Title : National Travel Time Dashboard: Interstate Highways, June 2025 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2025-06-01 Series : National Travel Time Dashboard: Interstate Highways URL : https://rosap.ntl.bts.gov/view/dot/87947 United States. Department of Transportation. Federal Highway Administration. Office of Operations (2025). National Travel Time Dashboard: Interstate Highways, June 2025. United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, June 2025" (2025) United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, June 2025" , 2025 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Management Research Data Set (NPMRDS) and traffic volume data from the Highway Performance Monitoring System (HPMS). The report includes Interstate highway data from all 50 U.S. states and the District of Columbia. AN - dot:87947 KW - Traffic congestion KW - Travel time KW - Traffic volume KW - Urban transportation KW - Reliability (Statistics) KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2025-06-01 T2 - National Travel Time Dashboard: Interstate Highways TI - National Travel Time Dashboard: Interstate Highways, June 2025 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87947 ER -
National Travel Time Dashboard: Interstate Highways, May 2025

United States. Department of Transportation. Federal Highway Administration. Office of Operations

2025-05-01 | National Travel Time Dashboard: Interstate Highways | PDF

The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma ...

11/24/2025

Title : National Travel Time Dashboard: Interstate Highways, May 2025 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2025-05-01 Series : National Travel Time Dashboard: Interstate Highways URL : https://rosap.ntl.bts.gov/view/dot/87946 United States. Department of Transportation. Federal Highway Administration. Office of Operations (2025). National Travel Time Dashboard: Interstate Highways, May 2025. United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, May 2025" (2025) United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, May 2025" , 2025 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Management Research Data Set (NPMRDS) and traffic volume data from the Highway Performance Monitoring System (HPMS). The report includes Interstate highway data from all 50 U.S. states and the District of Columbia. AN - dot:87946 KW - Traffic congestion KW - Travel time KW - Traffic volume KW - Urban transportation KW - Reliability (Statistics) KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2025-05-01 T2 - National Travel Time Dashboard: Interstate Highways TI - National Travel Time Dashboard: Interstate Highways, May 2025 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87946 ER -
National Travel Time Dashboard: Interstate Highways, April 2025

United States. Department of Transportation. Federal Highway Administration. Office of Operations

2025-04-01 | National Travel Time Dashboard: Interstate Highways | PDF

The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma ...

11/24/2025

Title : National Travel Time Dashboard: Interstate Highways, April 2025 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2025-04-01 Series : National Travel Time Dashboard: Interstate Highways URL : https://rosap.ntl.bts.gov/view/dot/87945 United States. Department of Transportation. Federal Highway Administration. Office of Operations (2025). National Travel Time Dashboard: Interstate Highways, April 2025. United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, April 2025" (2025) United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, April 2025" , 2025 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Management Research Data Set (NPMRDS) and traffic volume data from the Highway Performance Monitoring System (HPMS). The report includes Interstate highway data from all 50 U.S. states and the District of Columbia. AN - dot:87945 KW - Traffic congestion KW - Travel time KW - Traffic volume KW - Urban transportation KW - Reliability (Statistics) KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2025-04-01 T2 - National Travel Time Dashboard: Interstate Highways TI - National Travel Time Dashboard: Interstate Highways, April 2025 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87945 ER -
National Travel Time Dashboard: Interstate Highways, March 2025

United States. Department of Transportation. Federal Highway Administration. Office of Operations

2025-03-01 | National Travel Time Dashboard: Interstate Highways | PDF

The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma ...

11/24/2025

Title : National Travel Time Dashboard: Interstate Highways, March 2025 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2025-03-01 Series : National Travel Time Dashboard: Interstate Highways URL : https://rosap.ntl.bts.gov/view/dot/87944 United States. Department of Transportation. Federal Highway Administration. Office of Operations (2025). National Travel Time Dashboard: Interstate Highways, March 2025. United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, March 2025" (2025) United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, March 2025" , 2025 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Management Research Data Set (NPMRDS) and traffic volume data from the Highway Performance Monitoring System (HPMS). The report includes Interstate highway data from all 50 U.S. states and the District of Columbia. AN - dot:87944 KW - Traffic congestion KW - Travel time KW - Traffic volume KW - Urban transportation KW - Reliability (Statistics) KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2025-03-01 T2 - National Travel Time Dashboard: Interstate Highways TI - National Travel Time Dashboard: Interstate Highways, March 2025 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87944 ER -
National Travel Time Dashboard: Interstate Highways, February 2025

United States. Department of Transportation. Federal Highway Administration. Office of Operations

2025-02-01 | National Travel Time Dashboard: Interstate Highways | PDF

The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma ...

11/24/2025

Title : National Travel Time Dashboard: Interstate Highways, February 2025 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2025-02-01 Series : National Travel Time Dashboard: Interstate Highways URL : https://rosap.ntl.bts.gov/view/dot/87943 United States. Department of Transportation. Federal Highway Administration. Office of Operations (2025). National Travel Time Dashboard: Interstate Highways, February 2025. United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, February 2025" (2025) United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, February 2025" , 2025 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Management Research Data Set (NPMRDS) and traffic volume data from the Highway Performance Monitoring System (HPMS). The report includes Interstate highway data from all 50 U.S. states and the District of Columbia. AN - dot:87943 KW - Traffic congestion KW - Travel time KW - Traffic volume KW - Urban transportation KW - Reliability (Statistics) KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2025-02-01 T2 - National Travel Time Dashboard: Interstate Highways TI - National Travel Time Dashboard: Interstate Highways, February 2025 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87943 ER -
National Travel Time Dashboard: Interstate Highways, January 2025

United States. Department of Transportation. Federal Highway Administration. Office of Operations

2025-01-01 | National Travel Time Dashboard: Interstate Highways | PDF

The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma ...

11/24/2025

Title : National Travel Time Dashboard: Interstate Highways, January 2025 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2025-01-01 Series : National Travel Time Dashboard: Interstate Highways URL : https://rosap.ntl.bts.gov/view/dot/87942 United States. Department of Transportation. Federal Highway Administration. Office of Operations (2025). National Travel Time Dashboard: Interstate Highways, January 2025. United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, January 2025" (2025) United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, January 2025" , 2025 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Management Research Data Set (NPMRDS) and traffic volume data from the Highway Performance Monitoring System (HPMS). The report includes Interstate highway data from all 50 U.S. states and the District of Columbia. AN - dot:87942 KW - Traffic congestion KW - Travel time KW - Traffic volume KW - Urban transportation KW - Reliability (Statistics) KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2025-01-01 T2 - National Travel Time Dashboard: Interstate Highways TI - National Travel Time Dashboard: Interstate Highways, January 2025 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87942 ER -
National Travel Time Dashboard: Interstate Highways, December 2024

United States. Department of Transportation. Federal Highway Administration. Office of Operations

2024-12-01 | National Travel Time Dashboard: Interstate Highways | PDF

The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma ...

11/24/2025

Title : National Travel Time Dashboard: Interstate Highways, December 2024 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2024-12-01 Series : National Travel Time Dashboard: Interstate Highways URL : https://rosap.ntl.bts.gov/view/dot/87941 United States. Department of Transportation. Federal Highway Administration. Office of Operations (2024). National Travel Time Dashboard: Interstate Highways, December 2024. United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, December 2024" (2024) United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, December 2024" , 2024 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Management Research Data Set (NPMRDS) and traffic volume data from the Highway Performance Monitoring System (HPMS). The report includes Interstate highway data from all 50 U.S. states and the District of Columbia. AN - dot:87941 KW - Traffic congestion KW - Travel time KW - Traffic volume KW - Urban transportation KW - Reliability (Statistics) KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2024-12-01 T2 - National Travel Time Dashboard: Interstate Highways TI - National Travel Time Dashboard: Interstate Highways, December 2024 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87941 ER -
National Travel Time Dashboard: Interstate Highways, November 2024

United States. Department of Transportation. Federal Highway Administration. Office of Operations

2024-11-01 | National Travel Time Dashboard: Interstate Highways | PDF

The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma ...

11/24/2025

Title : National Travel Time Dashboard: Interstate Highways, November 2024 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2024-11-01 Series : National Travel Time Dashboard: Interstate Highways URL : https://rosap.ntl.bts.gov/view/dot/87940 United States. Department of Transportation. Federal Highway Administration. Office of Operations (2024). National Travel Time Dashboard: Interstate Highways, November 2024. United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, November 2024" (2024) United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, November 2024" , 2024 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Management Research Data Set (NPMRDS) and traffic volume data from the Highway Performance Monitoring System (HPMS). The report includes Interstate highway data from all 50 U.S. states and the District of Columbia. AN - dot:87940 KW - Traffic congestion KW - Travel time KW - Traffic volume KW - Urban transportation KW - Reliability (Statistics) KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2024-11-01 T2 - National Travel Time Dashboard: Interstate Highways TI - National Travel Time Dashboard: Interstate Highways, November 2024 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87940 ER -
National Travel Time Dashboard: Interstate Highways, October 2024

United States. Department of Transportation. Federal Highway Administration. Office of Operations

2024-10-01 | National Travel Time Dashboard: Interstate Highways | PDF

The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma ...

11/24/2025

Title : National Travel Time Dashboard: Interstate Highways, October 2024 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2024-10-01 Series : National Travel Time Dashboard: Interstate Highways URL : https://rosap.ntl.bts.gov/view/dot/87939 United States. Department of Transportation. Federal Highway Administration. Office of Operations (2024). National Travel Time Dashboard: Interstate Highways, October 2024. United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, October 2024" (2024) United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, October 2024" , 2024 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Management Research Data Set (NPMRDS) and traffic volume data from the Highway Performance Monitoring System (HPMS). The report includes Interstate highway data from all 50 U.S. states and the District of Columbia. AN - dot:87939 KW - Traffic congestion KW - Travel time KW - Traffic volume KW - Urban transportation KW - Reliability (Statistics) KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2024-10-01 T2 - National Travel Time Dashboard: Interstate Highways TI - National Travel Time Dashboard: Interstate Highways, October 2024 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87939 ER -
National Travel Time Dashboard: Interstate Highways, September 2024

United States. Department of Transportation. Federal Highway Administration. Office of Operations

2024-09-01 | National Travel Time Dashboard: Interstate Highways | PDF

The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma ...

11/24/2025

Title : National Travel Time Dashboard: Interstate Highways, September 2024 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2024-09-01 Series : National Travel Time Dashboard: Interstate Highways URL : https://rosap.ntl.bts.gov/view/dot/87938 United States. Department of Transportation. Federal Highway Administration. Office of Operations (2024). National Travel Time Dashboard: Interstate Highways, September 2024. United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, September 2024" (2024) United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, September 2024" , 2024 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Management Research Data Set (NPMRDS) and traffic volume data from the Highway Performance Monitoring System (HPMS). The report includes Interstate highway data from all 50 U.S. states and the District of Columbia. AN - dot:87938 KW - Traffic congestion KW - Travel time KW - Traffic volume KW - Urban transportation KW - Reliability (Statistics) KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2024-09-01 T2 - National Travel Time Dashboard: Interstate Highways TI - National Travel Time Dashboard: Interstate Highways, September 2024 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87938 ER -
National Travel Time Dashboard: Interstate Highways, August 2024

United States. Department of Transportation. Federal Highway Administration. Office of Operations

2024-08-01 | National Travel Time Dashboard: Interstate Highways | PDF

The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma ...

11/24/2025

Title : National Travel Time Dashboard: Interstate Highways, August 2024 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Operations Published Date : 2024-08-01 Series : National Travel Time Dashboard: Interstate Highways URL : https://rosap.ntl.bts.gov/view/dot/87937 United States. Department of Transportation. Federal Highway Administration. Office of Operations (2024). National Travel Time Dashboard: Interstate Highways, August 2024. United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, August 2024" (2024) United States. Department of Transportation. Federal Highway Administration. Office of Operations "National Travel Time Dashboard: Interstate Highways, August 2024" , 2024 Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Operations AB - The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Management Research Data Set (NPMRDS) and traffic volume data from the Highway Performance Monitoring System (HPMS). The report includes Interstate highway data from all 50 U.S. states and the District of Columbia. AN - dot:87937 KW - Traffic congestion KW - Travel time KW - Traffic volume KW - Urban transportation KW - Reliability (Statistics) KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Operations PY - 2024-08-01 T2 - National Travel Time Dashboard: Interstate Highways TI - National Travel Time Dashboard: Interstate Highways, August 2024 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/87937 ER -

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