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Showing 21 - 40 of 427 results

A Synthesis to Improve the Design and Construction of Colorado's Bridge Anti-Icing Systems

Bell, Gordon T. ;

Nixon, Wilfrid A.

2006-04-01 | PDF

Fixed Automated Spray Technology (FAST) is currently in use by the Colorado Department of Transportation's(CDOT's) maintenance organization but the technology is rapidly changing with new design, hardware, software and installation techniques. The existing specification is not current. This study was designed to develop a state-of-the-art specifica ...

08/24/2026

Title : A Synthesis to Improve the Design and Construction of Colorado's Bridge Anti-Icing Systems Creator(s) : Bell, Gordon T.;Nixon, Wilfrid A.;Stowe, Robert D.; Corporate Creator(s) : Bell Enterprises, LLC;Asset Insight Technologies, LLC; Corporate Contributor(s) : Colorado. Department of Transportation;United States. Department of Transportation. Federal Highway Administration; Published Date : 2006-04-01 Report Number : CDOT-DTD-R-2005-19 URL : https://rosap.ntl.bts.gov/view/dot/93127
Bell, Gordon T. et al. (2006). A Synthesis to Improve the Design and Construction of Colorado's Bridge Anti-Icing Systems.

Bell, Gordon T. and Nixon, Wilfrid A. and Stowe, Robert D. "A Synthesis to Improve the Design and Construction of Colorado's Bridge Anti-Icing Systems" (2006)

Bell, Gordon T. et al. "A Synthesis to Improve the Design and Construction of Colorado's Bridge Anti-Icing Systems" , 2006
Export RIS Citation Information. TY - Tech Report AU - Bell, Gordon T. AU - Nixon, Wilfrid A. AU - Stowe, Robert D. A2 - Bell Enterprises, LLC A2 - Asset Insight Technologies, LLC A3 - Colorado. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - Fixed Automated Spray Technology (FAST) is currently in use by the Colorado Department of Transportation's(CDOT's) maintenance organization but the technology is rapidly changing with new design, hardware, software and installation techniques. The existing specification is not current. This study was designed to develop a state-of-the-art specification for statewide use. Available information on CDOT's existing FAST sites was reviewed, along with information from other state, city and county, and European agencies, to design a document that can be updated as the technology develops. Research from a survey document sent to 50+ agencies using FAST system technology, global internet search results, personal interviews, and documented reports were used to develop a specification based on patterns of successes and failures in the development of FAST systems. Based on the lessons learned from the work described above and the recommendations of this report, the new specification for FAST systems should be established. AN - dot:93127 ET - Final Report KW - Anti-icing KW - Bridge design KW - Bridges KW - Computers KW - Construction KW - Internet KW - Interviewing KW - Lessons learned KW - Maintenance KW - Recommendations KW - Software KW - Specifications KW - Surveys KW - Winter maintenance KW - Fixed Anti-Icing Technology (FAST) LA - English PB - Colorado. Department of Transportation PY - 2006-04-01 SN - CDOT-DTD-R-2005-19 TI - A Synthesis to Improve the Design and Construction of Colorado's Bridge Anti-Icing Systems M3 - Tech Report N1 - United States N1 - 80.22 UR - https://rosap.ntl.bts.gov/view/dot/93127 ER - DB - ROSA P
The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume V - DC 10 Data 1981-1982: 129 Hours

Crabill, Norman L.

1989-12-01 | PDF

Two hundred hours of Lockheed L 1011 digital flight data recorder data taken in 1973 were used to develop methods and procedures for obtaining statistical data useful for updating airliner airworthiness design criteria. Five thousand hours of additional data taken in 1978 to 1982 are reported in volumes 2, 3, 4 and 5.

08/24/2026

Title : The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume V - DC 10 Data 1981-1982: 129 Hours Creator(s) : Crabill, Norman L. Corporate Creator(s) : Eagle Engineering, Incorporated Corporate Contributor(s) : United States. National Aeronautics and Space Administration Published Date : 1989-12-01 Report Number : DOT/FAA - CT - 89/36 - V URL : https://rosap.ntl.bts.gov/view/dot/93126
Crabill, Norman L. (1989). The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume V - DC 10 Data 1981-1982: 129 Hours.

Crabill, Norman L. "The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume V - DC 10 Data 1981-1982: 129 Hours" (1989)

Crabill, Norman L. "The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume V - DC 10 Data 1981-1982: 129 Hours" , 1989
Export RIS Citation Information. TY - Tech Report AU - Crabill, Norman L. A2 - Eagle Engineering, Incorporated A3 - United States. National Aeronautics and Space Administration AB - Two hundred hours of Lockheed L 1011 digital flight data recorder data taken in 1973 were used to develop methods and procedures for obtaining statistical data useful for updating airliner airworthiness design criteria. Five thousand hours of additional data taken in 1978 to 1982 are reported in volumes 2, 3, 4 and 5. AN - dot:93126 ET - Volume 5 of 5 KW - Video imaging detectors KW - Vibration KW - Artificial satellites KW - Remote sensing KW - Atmospheric phenomena LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-12-01 SN - DOT/FAA - CT - 89/36 - V TI - The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume V - DC 10 Data 1981-1982: 129 Hours M3 - Tech Report N1 - United States N1 - NASW 4430 UR - https://rosap.ntl.bts.gov/view/dot/93126 ER - DB - ROSA P
The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume III - B 747 Data 1978-1980: 1765 Hours

Crabill, Norman L.

1989-12-01 | PDF

Two hundred hours of Lockheed L 1011 digital flight data recorder data taken in 1973 were used to develop methods and procedures for obtaining statistical data useful for updating airliner airworthiness design criteria. Five thousand hours of additional data taken in 1978 to 1982 are reported in volumes 2, 3, 4 and 5.

08/24/2026

Title : The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume III - B 747 Data 1978-1980: 1765 Hours Creator(s) : Crabill, Norman L. Corporate Creator(s) : Eagle Engineering, Incorporated Corporate Contributor(s) : United States. National Aeronautics and Space Administration Published Date : 1989-12-01 Report Number : DOT/FAA -CT -89/36 -ill URL : https://rosap.ntl.bts.gov/view/dot/93125
Crabill, Norman L. (1989). The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume III - B 747 Data 1978-1980: 1765 Hours.

Crabill, Norman L. "The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume III - B 747 Data 1978-1980: 1765 Hours" (1989)

Crabill, Norman L. "The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume III - B 747 Data 1978-1980: 1765 Hours" , 1989
Export RIS Citation Information. TY - Tech Report AU - Crabill, Norman L. A2 - Eagle Engineering, Incorporated A3 - United States. National Aeronautics and Space Administration AB - Two hundred hours of Lockheed L 1011 digital flight data recorder data taken in 1973 were used to develop methods and procedures for obtaining statistical data useful for updating airliner airworthiness design criteria. Five thousand hours of additional data taken in 1978 to 1982 are reported in volumes 2, 3, 4 and 5. AN - dot:93125 ET - Volume 3 of 5 KW - Video imaging detectors KW - Vibration KW - Artificial satellites KW - Remote sensing KW - Atmospheric phenomena LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-12-01 SN - DOT/FAA -CT -89/36 -ill TI - The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume III - B 747 Data 1978-1980: 1765 Hours M3 - Tech Report N1 - United States N1 - NASW 4430 UR - https://rosap.ntl.bts.gov/view/dot/93125 ER - DB - ROSA P
Responsible Charge [Memorandum]

Nicol, David

2011-08-04 | Memoranda & Guidance | PDF

The issue of "responsible charge" of Federal-aid construction projects has been raised on several occasions; most recently as it relates to Federal-aid projects that are administered by local public agencies. The following attachment provides guidance on the requirements and duties of the person designated to be in "responsible charge".

08/24/2026

Title : Responsible Charge [Memorandum] Creator(s) : Nicol, David Corporate Creator(s) : United States. Federal Highway Administration. Office of Program Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 2011-08-04 Series : Memoranda & Guidance URL : https://rosap.ntl.bts.gov/view/dot/93124
Nicol, David (2011). Responsible Charge [Memorandum].

Nicol, David "Responsible Charge [Memorandum]" (2011)

Nicol, David "Responsible Charge [Memorandum]" , 2011
Export RIS Citation Information. TY - Memorandum AU - Nicol, David A2 - United States. Federal Highway Administration. Office of Program Administration A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - The issue of "responsible charge" of Federal-aid construction projects has been raised on several occasions; most recently as it relates to Federal-aid projects that are administered by local public agencies. The following attachment provides guidance on the requirements and duties of the person designated to be in "responsible charge". AN - dot:93124 KW - Federal aid KW - Construction management KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2011-08-04 T2 - Memoranda & Guidance TI - Responsible Charge [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93124 ER - DB - ROSA P
The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume IV - B 747 Data 1978-1980: 1689 Hours

Crabill, Norman L.

1989-12-01 | PDF

Two hundred hours of Lockheed L 1011 digital flight data recorder data taken in 1973 were used to develop methods and procedures for obtaining statistical data useful for updating airliner airworthiness design criteria. Five thousand hours of additional data taken in 1978 to 1982 are reported in volumes 2, 3, 4 and 5.

08/24/2026

Title : The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume IV - B 747 Data 1978-1980: 1689 Hours Creator(s) : Crabill, Norman L. Corporate Creator(s) : Eagle Engineering, Incorporated Corporate Contributor(s) : United States. National Aeronautics and Space Administration Published Date : 1989-12-01 Report Number : DOT/FAA - CT - 89/36 - IV URL : https://rosap.ntl.bts.gov/view/dot/93123
Crabill, Norman L. (1989). The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume IV - B 747 Data 1978-1980: 1689 Hours.

Crabill, Norman L. "The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume IV - B 747 Data 1978-1980: 1689 Hours" (1989)

Crabill, Norman L. "The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume IV - B 747 Data 1978-1980: 1689 Hours" , 1989
Export RIS Citation Information. TY - Tech Report AU - Crabill, Norman L. A2 - Eagle Engineering, Incorporated A3 - United States. National Aeronautics and Space Administration AB - Two hundred hours of Lockheed L 1011 digital flight data recorder data taken in 1973 were used to develop methods and procedures for obtaining statistical data useful for updating airliner airworthiness design criteria. Five thousand hours of additional data taken in 1978 to 1982 are reported in volumes 2, 3, 4 and 5. AN - dot:93123 ET - Volume 4 of 5 KW - Video imaging detectors KW - Vibration KW - Artificial satellites KW - Remote sensing KW - Atmospheric phenomena LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-12-01 SN - DOT/FAA - CT - 89/36 - IV TI - The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume IV - B 747 Data 1978-1980: 1689 Hours M3 - Tech Report N1 - United States N1 - NASW 4430 UR - https://rosap.ntl.bts.gov/view/dot/93123 ER - DB - ROSA P
Participation in Engineering Errors [Memorandum]

Williams, G. M.

1963-07-12 | Memoranda & Guidance | PDF

This policy draws a distinction between engineering errors incorporated into the P.S.&E. approved by Public Roads and engineering errors committed by State personnel during construction operations. Federal participation in the costs of corrective work is allowed in the first instance but is denied in the second.

08/24/2026

Title : Participation in Engineering Errors [Memorandum] Creator(s) : Williams, G. M. Corporate Creator(s) : United States. Department of Commerce. Bureau of Public Roads Published Date : 1963-07-12 Series : Memoranda & Guidance URL : https://rosap.ntl.bts.gov/view/dot/93122
Williams, G. M. (1963). Participation in Engineering Errors [Memorandum].

Williams, G. M. "Participation in Engineering Errors [Memorandum]" (1963)

Williams, G. M. "Participation in Engineering Errors [Memorandum]" , 1963
Export RIS Citation Information. TY - Memorandum AU - Williams, G. M. A2 - United States. Department of Commerce. Bureau of Public Roads AB - This policy draws a distinction between engineering errors incorporated into the P.S.&E. approved by Public Roads and engineering errors committed by State personnel during construction operations. Federal participation in the costs of corrective work is allowed in the first instance but is denied in the second. AN - dot:93122 KW - Federal aid KW - Construction management KW - Policy KW - Recommendations LA - English PB - United States. Department of Commerce. Bureau of Public Roads PY - 1963-07-12 T2 - Memoranda & Guidance TI - Participation in Engineering Errors [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93122 ER - DB - ROSA P
Federal Participation in Construction Engineering Errors [Memorandum]

United States. Federal Highway Administration. Construction and Maintenance Division

1978-08-15 | Memoranda & Guidance | PDF

At the recent AASHTO Construction Committee Meeting, the subject of FHWA participation in construction engineering errors was a matter of discussion and concern to the State participants. The States feel that there is a wide variation in how the Division Offices act in regard to participation with Federal funds.

08/24/2026

Title : Federal Participation in Construction Engineering Errors [Memorandum] Corporate Creator(s) : United States. Federal Highway Administration. Construction and Maintenance Division Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 1978-08-15 Series : Memoranda & Guidance URL : https://rosap.ntl.bts.gov/view/dot/93121
United States. Federal Highway Administration. Construction and Maintenance Division (1978). Federal Participation in Construction Engineering Errors [Memorandum].

United States. Federal Highway Administration. Construction and Maintenance Division "Federal Participation in Construction Engineering Errors [Memorandum]" (1978)

United States. Federal Highway Administration. Construction and Maintenance Division "Federal Participation in Construction Engineering Errors [Memorandum]" , 1978
Export RIS Citation Information. TY - Memorandum A2 - United States. Federal Highway Administration. Construction and Maintenance Division A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - At the recent AASHTO Construction Committee Meeting, the subject of FHWA participation in construction engineering errors was a matter of discussion and concern to the State participants. The States feel that there is a wide variation in how the Division Offices act in regard to participation with Federal funds. AN - dot:93121 KW - Federal aid KW - Construction management KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 1978-08-15 T2 - Memoranda & Guidance TI - Federal Participation in Construction Engineering Errors [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93121 ER - DB - ROSA P
Participation in the Cost of Corrective Work Resulting from Construction Engineering Errors [Memorandum]

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

1978-09-08 | Memoranda & Guidance | PDF

There was concern expressed by State Construction Engineers at the recent American Association of State Highway and Transportation Officials (AASHTO) Construction Committee in Portland, Maine, that there were inconsistencies in applying Federal-aid participation in the cost of corrective work resulting from construction engineering errors.

08/24/2026

Title : Participation in the Cost of Corrective Work Resulting from Construction Engineering Errors [Memorandum] Corporate Creator(s) : United States. Federal Highway Administration. Office of Highway Operations;United States. Federal Highway Administration. Construction and Maintenance Division; Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 1978-09-08 Series : Memoranda & Guidance URL : https://rosap.ntl.bts.gov/view/dot/93120
United States. Federal Highway Administration. Office of Highway Operations (1978). Participation in the Cost of Corrective Work Resulting from Construction Engineering Errors [Memorandum].

United States. Federal Highway Administration. Office of Highway Operations "Participation in the Cost of Corrective Work Resulting from Construction Engineering Errors [Memorandum]" (1978)

United States. Federal Highway Administration. Office of Highway Operations "Participation in the Cost of Corrective Work Resulting from Construction Engineering Errors [Memorandum]" , 1978
Export RIS Citation Information. TY - Memorandum A2 - United States. Federal Highway Administration. Office of Highway Operations A2 - United States. Federal Highway Administration. Construction and Maintenance Division A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - There was concern expressed by State Construction Engineers at the recent American Association of State Highway and Transportation Officials (AASHTO) Construction Committee in Portland, Maine, that there were inconsistencies in applying Federal-aid participation in the cost of corrective work resulting from construction engineering errors. AN - dot:93120 KW - Federal aid KW - Construction management KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 1978-09-08 T2 - Memoranda & Guidance TI - Participation in the Cost of Corrective Work Resulting from Construction Engineering Errors [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93120 ER - DB - ROSA P
Computerization of Construction Record [Memorandum]

United States. Federal Highway Administration. Office of Highway Operations

1989-09-21 | Memoranda & Guidance | PDF

Over the last few years, there has been a significant increase in the utilization of microcomputers in construction. Technology is presently available which allows measurements and test results to be obtained and recorded electronically. This raises a question concerning the proper method of handling and controlling electronic records on Federal-ai ...

08/24/2026

Title : Computerization of Construction Record [Memorandum] Corporate Creator(s) : United States. Federal Highway Administration. Office of Highway Operations Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 1989-09-21 Series : Memoranda & Guidance URL : https://rosap.ntl.bts.gov/view/dot/93119
United States. Federal Highway Administration. Office of Highway Operations (1989). Computerization of Construction Record [Memorandum].

United States. Federal Highway Administration. Office of Highway Operations "Computerization of Construction Record [Memorandum]" (1989)

United States. Federal Highway Administration. Office of Highway Operations "Computerization of Construction Record [Memorandum]" , 1989
Export RIS Citation Information. TY - Memorandum A2 - United States. Federal Highway Administration. Office of Highway Operations A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - Over the last few years, there has been a significant increase in the utilization of microcomputers in construction. Technology is presently available which allows measurements and test results to be obtained and recorded electronically. This raises a question concerning the proper method of handling and controlling electronic records on Federal-aid construction projects. AN - dot:93119 KW - Construction management KW - Microcomputers KW - Records management KW - Federal aid KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 1989-09-21 T2 - Memoranda & Guidance TI - Computerization of Construction Record [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93119 ER - DB - ROSA P
Research Scoping Study: Economic Benefits From Transportation Investments

Keen, David ;

Felsburg, Robert W.

2006-05-01 | PDF

The study team reviewed more than 50 studies that examined the benefits of transportation investment in different parts of the country. Many of the studies were statewide analyses of the economic benefits of transportation improvements. For a number of past statewide studies, the study team interviewed the lead study sponsor, state DOT staff, and s ...

08/24/2026

Title : Research Scoping Study: Economic Benefits From Transportation Investments Creator(s) : Keen, David;Felsburg, Robert W.;Pickton, Todd;Clements, Janet; Corporate Creator(s) : BBC Research & Consulting;Felsburg Holt & Ullevig; Corporate Contributor(s) : Colorado. Department of Transportation. Division of Transportation Development;United States. Department of Transportation. Federal Highway Administration; Published Date : 2006-05-01 Report Number : CDOT-DTD-R-2006-15 URL : https://rosap.ntl.bts.gov/view/dot/93118
Keen, David et al. (2006). Research Scoping Study: Economic Benefits From Transportation Investments.

Keen, David et al. "Research Scoping Study: Economic Benefits From Transportation Investments" (2006)

Keen, David et al. "Research Scoping Study: Economic Benefits From Transportation Investments" , 2006
Export RIS Citation Information. TY - Tech Report AU - Keen, David AU - Felsburg, Robert W. AU - Pickton, Todd AU - Clements, Janet A2 - BBC Research & Consulting A2 - Felsburg Holt & Ullevig A3 - Colorado. Department of Transportation. Division of Transportation Development A3 - United States. Department of Transportation. Federal Highway Administration AB - The study team reviewed more than 50 studies that examined the benefits of transportation investment in different parts of the country. Many of the studies were statewide analyses of the economic benefits of transportation improvements. For a number of past statewide studies, the study team interviewed the lead study sponsor, state DOT staff, and study researchers about each study's purpose, methodology and perceived success. The literature review and interviews helped reveal what questions were being asked in other economic benefits studies; why they were asked; methods used to answer the questions; how study sponsors used the research results; and how the messages were received by the target audiences. The study team also examined National Cooperative Highway Research Program (NCHRP) research that specifically provided guidance about communicating the economic benefits of transportation investments. The study team also held seven focus groups with target audiences throughout Colorado to identify benefits of greatest interest and the best ways of communicating economic benefits of transportation investments. The focus groups were also used to test key messages from transportation benefits studies conducted in other states. According to focus group participants, the most important benefits are personalized benefits that directly affect Colorado residents on a daily basis. These benefits include reduced accidents and injuries, gas savings, higher personal income, employment growth, faster commutes, and business cost savings. Focus group participants found large monetary benefits. AN - dot:93118 ET - Final Report KW - Focus groups KW - Economic benefits KW - Regional economics KW - Investments KW - Literature reviews KW - Commuting KW - Benefit cost analysis KW - statewide economic benefits LA - English PB - Colorado. Department of Transportation PY - 2006-05-01 SN - CDOT-DTD-R-2006-15 TI - Research Scoping Study: Economic Benefits From Transportation Investments M3 - Tech Report N1 - United States N1 - PGG HAA 06HQ0000177 UR - https://rosap.ntl.bts.gov/view/dot/93118 ER - DB - ROSA P
The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume I - Development of Methods

Crabill, Norman L.

1989-12-01 | PDF

Two hundred hours of Lockheed L 1011 digital flight data recorder data taken in 1973 were used to develop methods and procedures for obtaining statistical data useful for updating airliner airworthiness design criteria. Five thousand hours of additional data taken in 1978 to 1982 are reported in volumes 2, 3, 4 and 5.

08/24/2026

Title : The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume I - Development of Methods Creator(s) : Crabill, Norman L. Corporate Creator(s) : Eagle Engineering, Incorporated Corporate Contributor(s) : United States. National Aeronautics and Space Administration Published Date : 1989-12-01 Report Number : DOT/FAA -CT - 89/36 - I URL : https://rosap.ntl.bts.gov/view/dot/93117
Crabill, Norman L. (1989). The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume I - Development of Methods.

Crabill, Norman L. "The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume I - Development of Methods" (1989)

Crabill, Norman L. "The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume I - Development of Methods" , 1989
Export RIS Citation Information. TY - Tech Report AU - Crabill, Norman L. A2 - Eagle Engineering, Incorporated A3 - United States. National Aeronautics and Space Administration AB - Two hundred hours of Lockheed L 1011 digital flight data recorder data taken in 1973 were used to develop methods and procedures for obtaining statistical data useful for updating airliner airworthiness design criteria. Five thousand hours of additional data taken in 1978 to 1982 are reported in volumes 2, 3, 4 and 5. AN - dot:93117 ET - Volume 1 of 5 KW - Video imaging detectors KW - Vibration KW - Artificial satellites KW - Remote sensing KW - Atmospheric phenomena LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-12-01 SN - DOT/FAA -CT - 89/36 - I TI - The NASA Digital VGH Program - Exploration of Methods and Final Results: Volume I - Development of Methods M3 - Tech Report N1 - United States N1 - NASW 4430 UR - https://rosap.ntl.bts.gov/view/dot/93117 ER - DB - ROSA P
Equipment Purchases for State Construction Engineering Use [Memorandum]

United States. Federal Highway Administration. Office of Engineering

1993-05-05 | Memoranda & Guidance | PDF

In the mid-1980's, several inquiries were received regarding the FHWA's position concerning participation when State highway agencies (SHA's) require construction contractors, as a condition of their contract, to purchase and transfer ownership of certain construction engineering equipment items to the SHA. Examples include field laboratories and v ...

08/24/2026

Title : Equipment Purchases for State Construction Engineering Use [Memorandum] Corporate Creator(s) : United States. Federal Highway Administration. Office of Engineering Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 1993-05-05 Series : Memoranda & Guidance URL : https://rosap.ntl.bts.gov/view/dot/93116
United States. Federal Highway Administration. Office of Engineering (1993). Equipment Purchases for State Construction Engineering Use [Memorandum].

United States. Federal Highway Administration. Office of Engineering "Equipment Purchases for State Construction Engineering Use [Memorandum]" (1993)

United States. Federal Highway Administration. Office of Engineering "Equipment Purchases for State Construction Engineering Use [Memorandum]" , 1993
Export RIS Citation Information. TY - Memorandum A2 - United States. Federal Highway Administration. Office of Engineering A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - In the mid-1980's, several inquiries were received regarding the FHWA's position concerning participation when State highway agencies (SHA's) require construction contractors, as a condition of their contract, to purchase and transfer ownership of certain construction engineering equipment items to the SHA. Examples include field laboratories and various acceptance testing equipment items. AN - dot:93116 KW - Construction management KW - Contractors KW - Equipment KW - Procurement KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 1993-05-05 T2 - Memoranda & Guidance TI - Equipment Purchases for State Construction Engineering Use [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93116 ER - DB - ROSA P
Electronic Security Issues - Kansas Department of Transportation (KDOT) Construction Management System (CMS) [Memorandum]

United States. Federal Highway Administration. Construction and Maintenance Division ...

1993-07-07 | Memoranda & Guidance | PDF

This memorandum discusses the Kansas Division's review and approval of KDOT's Construction Management System (CMS).

08/24/2026

Title : Electronic Security Issues - Kansas Department of Transportation (KDOT) Construction Management System (CMS) [Memorandum] Corporate Creator(s) : United States. Federal Highway Administration. Construction and Maintenance Division;United States. Federal Highway Administration. Office of Engineering; Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 1993-07-07 Series : Memoranda & Guidance URL : https://rosap.ntl.bts.gov/view/dot/93115
United States. Federal Highway Administration. Construction and Maintenance Division (1993). Electronic Security Issues - Kansas Department of Transportation (KDOT) Construction Management System (CMS) [Memorandum].

United States. Federal Highway Administration. Construction and Maintenance Division "Electronic Security Issues - Kansas Department of Transportation (KDOT) Construction Management System (CMS) [Memorandum]" (1993)

United States. Federal Highway Administration. Construction and Maintenance Division "Electronic Security Issues - Kansas Department of Transportation (KDOT) Construction Management System (CMS) [Memorandum]" , 1993
Export RIS Citation Information. TY - Memorandum A2 - United States. Federal Highway Administration. Construction and Maintenance Division A2 - United States. Federal Highway Administration. Office of Engineering A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - This memorandum discusses the Kansas Division's review and approval of KDOT's Construction Management System (CMS). AN - dot:93115 KW - Information management KW - Computer security KW - Construction management KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 1993-07-07 T2 - Memoranda & Guidance TI - Electronic Security Issues - Kansas Department of Transportation (KDOT) Construction Management System (CMS) [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93115 ER - DB - ROSA P
Reproducing the Products of Flaming Combustion in the Microscale Combustion Calorimeter

Walters, Richard N. ;

Speitel, Louise

2025-08-01 | PDF

The FAA microscale combustion calorimeter (MCC) operates by burning the evolved gases from a thermally degrading sample and measuring the oxygen consumption to calculate a heat release rate. Recent method developments using hyphenated MCC techniques enables measurements of the effect of vitiation on toxic combustion gas yields. Stoichiometric fuel ...

08/24/2026

Title : Reproducing the Products of Flaming Combustion in the Microscale Combustion Calorimeter Creator(s) : Walters, Richard N.;Speitel, Louise;Safronava, Natallia;Lyon, Richard E.; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Fire Research and Safety Branch Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 2025-08-01 Report Number : DOT/FAA/TC-25/11 DOI : https://doi.org/10.21949/6z76-8930
Walters, Richard N. et al. (2025). Reproducing the Products of Flaming Combustion in the Microscale Combustion Calorimeter. https://doi.org/10.21949/6z76-8930

Walters, Richard N. et al. "Reproducing the Products of Flaming Combustion in the Microscale Combustion Calorimeter" (2025), https://doi.org/10.21949/6z76-8930

Walters, Richard N. et al. "Reproducing the Products of Flaming Combustion in the Microscale Combustion Calorimeter" , 2025, https://doi.org/10.21949/6z76-8930
Export RIS Citation Information. TY - Tech Report AU - Walters, Richard N. AU - Speitel, Louise AU - Safronava, Natallia AU - Lyon, Richard E. A2 - United States. Department of Transportation. Federal Aviation Administration. Fire Research and Safety Branch A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - The FAA microscale combustion calorimeter (MCC) operates by burning the evolved gases from a thermally degrading sample and measuring the oxygen consumption to calculate a heat release rate. Recent method developments using hyphenated MCC techniques enables measurements of the effect of vitiation on toxic combustion gas yields. Stoichiometric fuel to oxygen ratio tests were performed where a constant fuel to oxygen ratio relative to the stoichiometric ratio, Φ, in the combustor is controlled throughout the sample decomposition. When Φ < 1, combustion is fuel lean (over ventilated). When Φ > 1, combustion is fuel rich (vitiated). AB - The MCC was coupled with an infrared spectrometer (MCC-IR) and a multi-gas analyzer (MCC-Testo), which were used to monitor gases and evaluate combustion toxicity at different Φ and combustion temperature set points. These hyphenated techniques demonstrate a unique capability to elucidate the effect of constant fuel to oxygen ratios on combustion product yields. Measurements made at different Φ's will help to better understand the flame chemistry and the mix of complete/incomplete combustion products for various aircraft materials throughout the different stages of a full-scale fire. Combustion equivalence ratios of 0.5, 1.0 and 1.5 were evaluated in this study. A set of hydrocarbon materials with elemental compositions, including C, H, N, O, and S, were examined to provide a spectrum of gaseous combustion products where a small set of potential toxic combustion products could be evaluated. Yields of the gaseous decomposition/combustion products were compared as a function of equivalence ratio for the set of materials. Trends in combustion products produced at different oxygen ratios correlate with large-scale fire test data from the literature and showed an increase in toxic product yields with increasing Φ. AN - dot:93114 DO - https://doi.org/10.21949/6z76-8930 KW - Oxidation KW - Calorimeters KW - Toxicity KW - Aviation KW - Combustion Equivalence Ratio KW - Microscale Combustion Calorimeter (MCC) LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 2025-08-01 SN - DOT/FAA/TC-25/11 TI - Reproducing the Products of Flaming Combustion in the Microscale Combustion Calorimeter M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/93114 ER - DB - ROSA P
Countermeasures With Promise (CWIP) - Left Turn Protection

Hauer, Ezra

2006-06-01 | PDF

An important task in road safety management is to monitor where accidents occur on the road system and to assess whether safety at the high-accident sites can be cost-effectively improved. The weak point of the customary process is that the list of high-accident sites is prepared without considering what countermeasures, if any, could apply at the ...

08/24/2026

Title : Countermeasures With Promise (CWIP) - Left Turn Protection Creator(s) : Hauer, Ezra Corporate Creator(s) : Felsburg, Holt & Ullevig Corporate Contributor(s) : Colorado. Department of Transportation;United States. Department of Transportation. Federal Highway Administration; Published Date : 2006-06-01 Report Number : CDOT-2006-19 URL : https://rosap.ntl.bts.gov/view/dot/93113
Hauer, Ezra (2006). Countermeasures With Promise (CWIP) - Left Turn Protection.

Hauer, Ezra "Countermeasures With Promise (CWIP) - Left Turn Protection" (2006)

Hauer, Ezra "Countermeasures With Promise (CWIP) - Left Turn Protection" , 2006
Export RIS Citation Information. TY - Tech Report AU - Hauer, Ezra A2 - Felsburg, Holt & Ullevig A3 - Colorado. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - An important task in road safety management is to monitor where accidents occur on the road system and to assess whether safety at the high-accident sites can be cost-effectively improved. The weak point of the customary process is that the list of high-accident sites is prepared without considering what countermeasures, if any, could apply at the sites on the list. An alternative approach is the 'Countermeasures with Promise' (CWiP) process, which involves choosing countermeasures known to be effective and then seeking sites where these could be implemented to best effect. The countermeasure chosen for examination in this study was that of changing left-turn phasing at signalized intersection to 'Protected' phasing. The target accidents were those involving left-turning vehicles. Several ranked lists were produced. AN - dot:93113 ET - Final Report KW - Countermeasures KW - Exclusive phasing KW - High risk locations KW - Highway safety KW - Implementation KW - Left turn phase KW - Safety management KW - Signalized intersections KW - safety improvements KW - high-accident sites LA - English PB - Colorado. Department of Transportation PY - 2006-06-01 SN - CDOT-2006-19 TI - Countermeasures With Promise (CWIP) - Left Turn Protection M3 - Tech Report N1 - United States N1 - 90.70 UR - https://rosap.ntl.bts.gov/view/dot/93113 ER - DB - ROSA P
Precast Concrete Paving Panels: The Colorado Department of Transportation Region 4 Experience, 2000 to 2006

DeWitt, Gary L.

2006-08-01 | PDF

Beginning with a pilot project in December 2000, the Colorado Department of Transportation, Region 4 (northeast corner of Colorado), pursued the use of precast concrete panels as a means to speed repair of concrete pavements. The outcome of the repair techniques occurring within 8 to 9 hours has provided a means to minimize traffic disruption at pe ...

08/24/2026

Title : Precast Concrete Paving Panels: The Colorado Department of Transportation Region 4 Experience, 2000 to 2006 Creator(s) : DeWitt, Gary L. Corporate Creator(s) : Colorado. Department of Transportation Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration Published Date : 2006-08-01 Report Number : CDOT-DTD-R-2006-8 URL : https://rosap.ntl.bts.gov/view/dot/93112
DeWitt, Gary L. (2006). Precast Concrete Paving Panels: The Colorado Department of Transportation Region 4 Experience, 2000 to 2006.

DeWitt, Gary L. "Precast Concrete Paving Panels: The Colorado Department of Transportation Region 4 Experience, 2000 to 2006" (2006)

DeWitt, Gary L. "Precast Concrete Paving Panels: The Colorado Department of Transportation Region 4 Experience, 2000 to 2006" , 2006
Export RIS Citation Information. TY - Tech Report AU - DeWitt, Gary L. A2 - Colorado. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - Beginning with a pilot project in December 2000, the Colorado Department of Transportation, Region 4 (northeast corner of Colorado), pursued the use of precast concrete panels as a means to speed repair of concrete pavements. The outcome of the repair techniques occurring within 8 to 9 hours has provided a means to minimize traffic disruption at peak traffic hours. A description of construction concerns and techniques is included. While a high success rate has occurred with thicker panel depths (8 inches and above), shallower panel depths ( 7 inches and below) have had a higher failure rate than was expected. Panels have been installed in high traffic areas principally I-25 north of Denver. Additional sites with fewer panels have been on US Hwy 287 north of Fort Collins and US Hwy 85 near Greeley. AN - dot:93112 ET - Final Report: 2000 to 2006 KW - Concrete pavements KW - Precast concrete KW - Whitetopping KW - Polyurethane foams KW - Repairing KW - Fiberglass KW - Lessons learned KW - Performance KW - concrete repair KW - precast concrete pavement KW - whitetopping repair KW - lifting agents KW - rapid concrete pavement repair KW - concrete panel installation LA - English PB - Colorado. Department of Transportation PY - 2006-08-01 SN - CDOT-DTD-R-2006-8 TI - Precast Concrete Paving Panels: The Colorado Department of Transportation Region 4 Experience, 2000 to 2006 M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/93112 ER - DB - ROSA P
Measuring the Fire Hazard of Aircraft Products in the Cone Calorimeter

Lyon, Richard E. ;

Emami, Tina

2025-10-01 | PDF

A dimensionless group of reaction-to-fire properties called the product fire hazard Π is measured in one or more cone calorimeter experiments and describes the contribution of a combustible product-to-fire growth of materials used in buildings, construction, and passenger aircraft cabins. The product fire hazard Π is a sole explanatory variable for ...

08/24/2026

Title : Measuring the Fire Hazard of Aircraft Products in the Cone Calorimeter Creator(s) : Lyon, Richard E.;Emami, Tina;Walters, Richard N.;Salter, Timothy; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. Fire Safety Section Published Date : 2025-10-01 Report Number : DOT/FAA/TC-25/10 DOI : https://doi.org/10.21949/9s00-xy29
Lyon, Richard E. et al. (2025). Measuring the Fire Hazard of Aircraft Products in the Cone Calorimeter. https://doi.org/10.21949/9s00-xy29

Lyon, Richard E. et al. "Measuring the Fire Hazard of Aircraft Products in the Cone Calorimeter" (2025), https://doi.org/10.21949/9s00-xy29

Lyon, Richard E. et al. "Measuring the Fire Hazard of Aircraft Products in the Cone Calorimeter" , 2025, https://doi.org/10.21949/9s00-xy29
Export RIS Citation Information. TY - Tech Report AU - Lyon, Richard E. AU - Emami, Tina AU - Walters, Richard N. AU - Salter, Timothy A2 - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. Fire Safety Section AB - A dimensionless group of reaction-to-fire properties called the product fire hazard Π is measured in one or more cone calorimeter experiments and describes the contribution of a combustible product-to-fire growth of materials used in buildings, construction, and passenger aircraft cabins. The product fire hazard Π is a sole explanatory variable for the fire performance of combustible solids in regulatory fire tests. AN - dot:93111 DO - https://doi.org/10.21949/9s00-xy29 ET - Final Report KW - Cone penetrometers KW - Calorimeters KW - Combustion KW - Flammability KW - Heat flux KW - Flash point KW - ISO 5660 KW - ISO 9705 KW - ASTM E84 KW - 14 CFR 25 LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 2025-10-01 SN - DOT/FAA/TC-25/10 TI - Measuring the Fire Hazard of Aircraft Products in the Cone Calorimeter M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/93111 ER - DB - ROSA P
Equipment Purchases for Construction Engineering Use - Cellular Telephones [Memorandum]

United States. Department of Transportation. Federal Highway Administration

1995-06-28 | Memoranda & Guidance | PDF

Several memorandums have been written in the past relative to equipment purchased on Federal-aid projects to meet the construction engineering needs of the project. The September 11, 1986, memorandum signed by Mr. Leathers, the October 17, 1986, memorandum signed by Mr. Myers and the May 5, 1993, memorandum signed by Mr. Willett pertain to this sub ...

08/24/2026

Title : Equipment Purchases for Construction Engineering Use - Cellular Telephones [Memorandum] Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 1995-06-28 Series : Memoranda & Guidance URL : https://rosap.ntl.bts.gov/view/dot/93110
United States. Department of Transportation. Federal Highway Administration (1995). Equipment Purchases for Construction Engineering Use - Cellular Telephones [Memorandum].

United States. Department of Transportation. Federal Highway Administration "Equipment Purchases for Construction Engineering Use - Cellular Telephones [Memorandum]" (1995)

United States. Department of Transportation. Federal Highway Administration "Equipment Purchases for Construction Engineering Use - Cellular Telephones [Memorandum]" , 1995
Export RIS Citation Information. TY - Memorandum A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - Several memorandums have been written in the past relative to equipment purchased on Federal-aid projects to meet the construction engineering needs of the project. The September 11, 1986, memorandum signed by Mr. Leathers, the October 17, 1986, memorandum signed by Mr. Myers and the May 5, 1993, memorandum signed by Mr. Willett pertain to this subject. Recently there have been several specific questions regarding the furnishing of cellular telephones on Federal-aid projects. This memorandum together with the May 5, 1993, memorandum signed by Mr. Willett supersede both of the 1986 memorandums. AN - dot:93110 KW - Construction projects KW - Equipment KW - Purchasing KW - Federal aid KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 1995-06-28 T2 - Memoranda & Guidance TI - Equipment Purchases for Construction Engineering Use - Cellular Telephones [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93110 ER - DB - ROSA P
FHWA Policy on Permissible Project Related Activities During the NEPA Process [Order]

United States. Department of Transportation. Federal Highway Administration

2010-10-01 | PDF

This Directive clarifies the Federal Highway Administration's (FHWA) policy regarding the permissible project-related activities that may be advanced prior to the conclusion of the National Environmental Policy Act (NEPA) process.

08/24/2026

Title : FHWA Policy on Permissible Project Related Activities During the NEPA Process [Order] Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 2010-10-01 URL : https://rosap.ntl.bts.gov/view/dot/93109
United States. Department of Transportation. Federal Highway Administration (2010). FHWA Policy on Permissible Project Related Activities During the NEPA Process [Order].

United States. Department of Transportation. Federal Highway Administration "FHWA Policy on Permissible Project Related Activities During the NEPA Process [Order]" (2010)

United States. Department of Transportation. Federal Highway Administration "FHWA Policy on Permissible Project Related Activities During the NEPA Process [Order]" , 2010
Export RIS Citation Information. TY - Memorandum A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - This Directive clarifies the Federal Highway Administration's (FHWA) policy regarding the permissible project-related activities that may be advanced prior to the conclusion of the National Environmental Policy Act (NEPA) process. AN - dot:93109 KW - Environmental policy KW - Construction projects KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2010-10-01 TI - FHWA Policy on Permissible Project Related Activities During the NEPA Process [Order] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93109 ER - DB - ROSA P
Guidebook for Railway-Themed K-12 STEM Distance Learning Activities

Dick, C. Tyler

;

Lautala, Pasi Tapio

2026-08-19 | PDF

Rail-themed outreach to K-12 students introduces those students to the railroad industry and can encourage them to pursue engineering and transportation education programs. This project will develop new rail-themed K-12 STEM distance learning activities, adapt current in-person activities to remote use, enhance activities with 3D printing and compu ...

08/24/2026

Title : Guidebook for Railway-Themed K-12 STEM Distance Learning Activities Creator(s) : Dick, C. Tyler;Lautala, Pasi Tapio; Corporate Creator(s) : University of Texas at Austin Corporate Contributor(s) : United States. Department of Transportation. Federal Railroad Administration. Office of Research, Development and Technology Published Date : 2026-08-19 Report Number : DOT/FRA/ORD-26/13 URL : https://rosap.ntl.bts.gov/view/dot/93108
Dick, C. Tyler and Lautala, Pasi Tapio (2026). Guidebook for Railway-Themed K-12 STEM Distance Learning Activities.

Dick, C. Tyler and Lautala, Pasi Tapio "Guidebook for Railway-Themed K-12 STEM Distance Learning Activities" (2026)

Dick, C. Tyler and Lautala, Pasi Tapio "Guidebook for Railway-Themed K-12 STEM Distance Learning Activities" , 2026
Export RIS Citation Information. TY - Tech Report AU - Dick, C. Tyler AU - Lautala, Pasi Tapio A2 - University of Texas at Austin A3 - United States. Department of Transportation. Federal Railroad Administration. Office of Research, Development and Technology A4 - Jones, Michael AB - Rail-themed outreach to K-12 students introduces those students to the railroad industry and can encourage them to pursue engineering and transportation education programs. This project will develop new rail-themed K-12 STEM distance learning activities, adapt current in-person activities to remote use, enhance activities with 3D printing and computer "gamification" code, and document existing online activities in a distance learning activity guidebook. This interim technical report summarizes the results of the first stage of the project that reviewed and identified potential rail-themed K-12 distance learning activities for inclusion in the guidebook and recognizes best practices in developing distance learning and self-study activities from in-person STEM activities. AN - dot:93108 ET - January 2024 to March 2024 KW - Distance learning KW - Handbooks KW - Railroads KW - Elementary school students KW - High school students KW - K-12 STEM LA - English PB - United States. Department of Transportation. Federal Railroad Administration PY - 2026-08-19 SN - DOT/FRA/ORD-26/13 TI - Guidebook for Railway-Themed K-12 STEM Distance Learning Activities M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/93108 ER - DB - ROSA P

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