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Showing 321 - 340 of 501 results

Fuel Containment Concepts - Transport Category Airplanes

Wittlin, G.

1987-11-01 | PDF

This report describes a four phase study to identify potential fuel containment concepts for transport category aircraft. A literature survey was performed and the relative contributions from 53 documents are noted. Transport airplane data are summarized including the results from full-scale airplane crash tests and section tests. Analyses results ...

08/10/2026

Title : Fuel Containment Concepts - Transport Category Airplanes Creator(s) : Wittlin, G. Corporate Creator(s) : Lockheed-California Company Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1987-11-01 Report Number : DOT/FAA/CT-87/18 URL : https://rosap.ntl.bts.gov/view/dot/92901
Wittlin, G. (1987). Fuel Containment Concepts - Transport Category Airplanes (Report No. DOT/FAA/CT-87/18). United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. https://rosap.ntl.bts.gov/view/dot/92901

Wittlin, G.. Fuel Containment Concepts - Transport Category Airplanes. Report no. DOT/FAA/CT-87/18. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1987. https://rosap.ntl.bts.gov/view/dot/92901.

Wittlin, G. Fuel Containment Concepts - Transport Category Airplanes. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1987, Report no. DOT/FAA/CT-87/18, ROSA P. https://rosap.ntl.bts.gov/view/dot/92901.
Export RIS Citation Information. TY - Tech Report AU - Wittlin, G. A2 - Lockheed-California Company A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This report describes a four phase study to identify potential fuel containment concepts for transport category aircraft. A literature survey was performed and the relative contributions from 53 documents are noted. Transport airplane data are summarized including the results from full-scale airplane crash tests and section tests. Analyses results which depict dynamic pulses are presented. Several reports including the U. S. Army Crash Survival Design Guide and the Special Aviation Fire and Explosion Reduction (SAFER) Advisory Committee are discussed in detail. Several fuel containment structural design concepts are evaluated with regard to both wing and fuselage usage. The state-of-the-art technology is summarized in this report. Included in this summary is a priority ranking of approaches. A selection of approaches is described. The selected concepts are reviewed with regard to benefit and penalties. The concepts are prioritized in order of effectiveness. AN - dot:92901 DA - 1987-11-01 ET - Final Report KW - Aircraft KW - Analysis KW - Containing equipment KW - Crashworthiness KW - Design KW - Design methods KW - Fuel systems KW - Fuel tanks KW - Ratings KW - Strategic planning LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1987 SN - DOT/FAA/CT-87/18 TI - Fuel Containment Concepts - Transport Category Airplanes M3 - Tech Report N1 - United States N1 - DTFA03-86-C-00005 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92901 ER -
Assessment of Safety and Operation Performances of CFIs and DDIs in Utah [Research Brief]

Song, Yu (Fred)

;

Zlatkovic, Milan

2026-07-01 | PDF

This research provides a comprehensive evaluation of the operational and safety performance of diverging diamond interchanges and continuous flow intersections under Utah-specific conditions by employing a dual-framework methodology that analyzes 16 years of historical crash and traffic data (2006-2021). To address the limitations of isolated asses ...

08/10/2026

Title : Assessment of Safety and Operation Performances of CFIs and DDIs in Utah [Research Brief] Creator(s) : Song, Yu (Fred);Zlatkovic, Milan;Dhimal, Ramesh;Neupane, Kiran; Corporate Creator(s) : University of Wyoming;Upper Great Plains Transportation Institute; Corporate Contributor(s) : United States. Department of Transportation. University Transportation Centers (UTC) Program;United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology; Published Date : 2026-07-01 Report Number : CTIPS-26-004 URL : https://rosap.ntl.bts.gov/view/dot/92900
Song, Y. (., Zlatkovic, M., Dhimal, R., & Neupane, K. (2026). Assessment of Safety and Operation Performances of CFIs and DDIs in Utah [Research Brief] (Report No. CTIPS-26-004). Center for Transformative Infrastructure Preservation and Sustainability (CTIPS) Region 8 University Transportation Center (UTC). https://rosap.ntl.bts.gov/view/dot/92900

Song, Yu (Fred), Milan Zlatkovic, Ramesh Dhimal, and Kiran Neupane. Assessment of Safety and Operation Performances of CFIs and DDIs in Utah [Research Brief]. Report no. CTIPS-26-004. Center for Transformative Infrastructure Preservation and Sustainability (CTIPS) Region 8 University Transportation Center (UTC), 2026. https://rosap.ntl.bts.gov/view/dot/92900.

Song, Yu (Fred), et al. Assessment of Safety and Operation Performances of CFIs and DDIs in Utah [Research Brief]. Center for Transformative Infrastructure Preservation and Sustainability (CTIPS) Region 8 University Transportation Center (UTC), 2026, Report no. CTIPS-26-004, ROSA P. https://rosap.ntl.bts.gov/view/dot/92900.
Export RIS Citation Information. TY - Tech Report AU - Song, Yu (Fred) AU - Zlatkovic, Milan AU - Dhimal, Ramesh AU - Neupane, Kiran A2 - University of Wyoming A2 - Upper Great Plains Transportation Institute A3 - United States. Department of Transportation. University Transportation Centers (UTC) Program A3 - United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology AB - This research provides a comprehensive evaluation of the operational and safety performance of diverging diamond interchanges and continuous flow intersections under Utah-specific conditions by employing a dual-framework methodology that analyzes 16 years of historical crash and traffic data (2006-2021). To address the limitations of isolated assessment methods, the first component utilizes safety-integrated microscopic traffic simulation via multimodal traffic simulation software, where surrogate safety measures-time-to-collision and maximum deceleration-were extracted and translated into predicted crash frequencies. The second component features a crash-based empirical evaluation to develop locally calibrated safety performance functions (an indicator of expected changes in crashes after implementing a countermeasure) and generate highly reliable, Utah-specific crash modification factors for fatal-and-injury crashes and property-damage-only crashes. By integrating surrogate safety analysis with rigorous empirical evaluation, this research equips transportation agencies with a transferable, data-driven framework to proactively assess both the efficiency and safety of innovative geometric intersection designs. AN - dot:92900 DA - 2026-07-01 ET - Research Brief KW - Diamond interchanges KW - Empirical methods KW - Bayes' theorem KW - Surrogate safety measures KW - Evaluation and assessment KW - Performance KW - Calibration KW - Countermeasures KW - Crash data KW - Diverging Diamond Interchange KW - Continuous Flow Intersection KW - Extreme Value Theory LA - English PB - Center for Transformative Infrastructure Preservation and Sustainability (CTIPS) Region 8 University Transportation Center (UTC) PY - 2026 SN - CTIPS-26-004 TI - Assessment of Safety and Operation Performances of CFIs and DDIs in Utah [Research Brief] M3 - Tech Report N1 - United States N1 - CTIPS-014 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92900 ER -
Assessment of Safety and Operation Performances of CFIs and DDIs in Utah

Dhimal, Ramesh

;

Neupane, Kiran

2026-07-01 | PDF

The Diverging Diamond Interchange (DDI) and the Continuous Flow Intersection (CFI) represent significant innovations in roadway design, offering superior operational performance and enhanced safety compared to conventional signalized ramp terminals and intersections. This study conducts a comprehensive evaluation of these two designs, focusing on b ...

08/10/2026

Title : Assessment of Safety and Operation Performances of CFIs and DDIs in Utah Creator(s) : Dhimal, Ramesh;Neupane, Kiran;Song, Yu (Fred);Zlatkovic, Milan; Corporate Creator(s) : Center for Transformative Infrastructure Preservation and Sustainability (CTIPS) Region 8 University Transportation Center (UTC);North Dakota State University; Corporate Contributor(s) : United States. Department of Transportation. University Transportation Centers (UTC) Program;United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology; Published Date : 2026-07-01 Report Number : CTIPS-26-004 URL : https://rosap.ntl.bts.gov/view/dot/92899
Dhimal, R., Neupane, K., Song, Y. (., & Zlatkovic, M. (2026). Assessment of Safety and Operation Performances of CFIs and DDIs in Utah (Report No. CTIPS-26-004). Center for Transformative Infrastructure Preservation and Sustainability (CTIPS) Region 8 University Transportation Center (UTC). https://rosap.ntl.bts.gov/view/dot/92899

Dhimal, Ramesh, Kiran Neupane, Yu (Fred) Song, and Milan Zlatkovic. Assessment of Safety and Operation Performances of CFIs and DDIs in Utah. Report no. CTIPS-26-004. Center for Transformative Infrastructure Preservation and Sustainability (CTIPS) Region 8 University Transportation Center (UTC), 2026. https://rosap.ntl.bts.gov/view/dot/92899.

Dhimal, Ramesh, et al. Assessment of Safety and Operation Performances of CFIs and DDIs in Utah. Center for Transformative Infrastructure Preservation and Sustainability (CTIPS) Region 8 University Transportation Center (UTC), 2026, Report no. CTIPS-26-004, ROSA P. https://rosap.ntl.bts.gov/view/dot/92899.
Export RIS Citation Information. TY - Tech Report AU - Dhimal, Ramesh AU - Neupane, Kiran AU - Song, Yu (Fred) AU - Zlatkovic, Milan A2 - Center for Transformative Infrastructure Preservation and Sustainability (CTIPS) Region 8 University Transportation Center (UTC) A2 - North Dakota State University A3 - United States. Department of Transportation. University Transportation Centers (UTC) Program A3 - United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology AB - The Diverging Diamond Interchange (DDI) and the Continuous Flow Intersection (CFI) represent significant innovations in roadway design, offering superior operational performance and enhanced safety compared to conventional signalized ramp terminals and intersections. This study conducts a comprehensive evaluation of these two designs, focusing on both traffic flow and safety outcomes. The research begins by establishing a safety integrated calibration and validation framework for microscopic traffic simulation models using PTV VISSIM. Unlike traditional approaches, this framework incorporates surrogate safety analysis by embedding bivariate Peak Over Threshold (POT) modeling from Extreme Value Theory (EVT) to jointly capture conflict severity using Time to Collision (TTC) and Maximum Deceleration (MaxD). This dual-purpose modeling approach allows for the estimation of crash frequency directly from simulated conflicts while maintaining operational fidelity. The calibration achieved high accuracy, with GEH values below 5 for all movements and minimal speed errors, and simulation-based crash estimates for CFIs differed from observed frequencies by only 0.07 crashes per year. Validation using 2019 data further confirmed the predictive capability and generalizability of the models. AN - dot:92899 DA - 2026-07-01 KW - Diamond interchanges KW - Empirical methods KW - Bayes' theorem KW - Surrogate safety measures KW - Evaluation and assessment KW - Performance KW - Calibration KW - Diverging Diamond Interchange KW - Continuous Flow Intersection KW - Extreme Value Theory LA - English PB - Center for Transformative Infrastructure Preservation and Sustainability (CTIPS) Region 8 University Transportation Center (UTC) PY - 2026 SN - CTIPS-26-004 TI - Assessment of Safety and Operation Performances of CFIs and DDIs in Utah M3 - Tech Report N1 - United States N1 - 69A3552348308 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92899 ER -
Advanced Automation Program HOST Computer System Acquisition Phase Acceptance Test Report

Koo, L. ;

DeGrandmaison, N. D.

1987-08-01 | PDF

This report summarizes the results of the Acceptance testing conducted during the Host Computer Acquisition Phase (AP) performed by IBH under contract number DTFA-01-85-C-00030. These tests were conducted at the Federal Aviation Administration (FAA) Technical Center beginning on September 17, 1985 and ending with FAA system acceptance on November 2 ...

08/10/2026

Title : Advanced Automation Program HOST Computer System Acquisition Phase Acceptance Test Report Creator(s) : Koo, L.;DeGrandmaison, N. D.;Olin, Carl; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration Published Date : 1987-08-01 Report Number : DOT/FAA/CT-87/14 URL : https://rosap.ntl.bts.gov/view/dot/92898
Koo, L., DeGrandmaison, N. D., & Olin, C. (1987). Advanced Automation Program HOST Computer System Acquisition Phase Acceptance Test Report (Report No. DOT/FAA/CT-87/14). United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. https://rosap.ntl.bts.gov/view/dot/92898

Koo, L., N. D. DeGrandmaison, and Carl Olin. Advanced Automation Program HOST Computer System Acquisition Phase Acceptance Test Report. Report no. DOT/FAA/CT-87/14. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1987. https://rosap.ntl.bts.gov/view/dot/92898.

Koo, L., et al. Advanced Automation Program HOST Computer System Acquisition Phase Acceptance Test Report. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1987, Report no. DOT/FAA/CT-87/14, ROSA P. https://rosap.ntl.bts.gov/view/dot/92898.
Export RIS Citation Information. TY - Tech Report AU - Koo, L. AU - DeGrandmaison, N. D. AU - Olin, Carl A2 - United States. Department of Transportation. Federal Aviation Administration. Technical Center A3 - United States. Department of Transportation. Federal Aviation Administration AB - This report summarizes the results of the Acceptance testing conducted during the Host Computer Acquisition Phase (AP) performed by IBH under contract number DTFA-01-85-C-00030. These tests were conducted at the Federal Aviation Administration (FAA) Technical Center beginning on September 17, 1985 and ending with FAA system acceptance on November 21, 1986. The Government lead in the Host acquisition acceptance testing was ACT-130, the Advanced Automation Branch located at the Technical Center. The tests were described in the Engineering Requirements of the Host AP Contract and were partitioned into three series; the Hardware/ Systems tests, the Support Software tests, and the Operational Software tests. All tests were conducted. by an IBM test team and witnessed by FAA and FAA support contractor personnel. This report describes the test objectives, the detailed analysis methods, and the results obtained during the AP testing. AN - dot:92898 DA - 1987-08-01 ET - Final Report KW - Computers KW - Information processing KW - Management KW - Monitoring KW - Data collection KW - Data management KW - Host Computer System KW - Acquisition Phase Acceptance KW - IBM 9020 Replacement LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1987 SN - DOT/FAA/CT-87/14 TI - Advanced Automation Program HOST Computer System Acquisition Phase Acceptance Test Report M3 - Tech Report N1 - United States N1 - T0504L DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92898 ER -
Krash Parametric Sensitivity Study - Transport Category Airplanes

Wittlin, G. ;

LaBarge, W. L.

1987-12-01 | PDF

This report describes a study subsequent to the CID pre-test and CID correlation presented previously in DOT/FAA/CT-85/9 and DOT/FAA/CT-86/13, respectively. KRASH models are used to perform parameter sensitivity studies. Analyses are performed for air-to-ground, ground-to-ground, and longitudinal-only impacts. The results are presented in the form ...

08/10/2026

Title : Krash Parametric Sensitivity Study - Transport Category Airplanes Creator(s) : Wittlin, G.;LaBarge, W. L.; Corporate Creator(s) : Lockheed-California Company Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1987-12-01 Report Number : DOT/FAA/CT-87/13 URL : https://rosap.ntl.bts.gov/view/dot/92897
Wittlin, G., & LaBarge, W. L. (1987). Krash Parametric Sensitivity Study - Transport Category Airplanes (Report No. DOT/FAA/CT-87/13). United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. https://rosap.ntl.bts.gov/view/dot/92897

Wittlin, G. and W. L. LaBarge. Krash Parametric Sensitivity Study - Transport Category Airplanes. Report no. DOT/FAA/CT-87/13. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1987. https://rosap.ntl.bts.gov/view/dot/92897.

Wittlin, G., and W. L. LaBarge Krash Parametric Sensitivity Study - Transport Category Airplanes. United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center, 1987, Report no. DOT/FAA/CT-87/13, ROSA P. https://rosap.ntl.bts.gov/view/dot/92897.
Export RIS Citation Information. TY - Tech Report AU - Wittlin, G. AU - LaBarge, W. L. A2 - Lockheed-California Company A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This report describes a study subsequent to the CID pre-test and CID correlation presented previously in DOT/FAA/CT-85/9 and DOT/FAA/CT-86/13, respectively. KRASH models are used to perform parameter sensitivity studies. Analyses are performed for air-to-ground, ground-to-ground, and longitudinal-only impacts. The results are presented in the form of triangular pulses with definitions of the peak amplitude, base time duration and pulse change of velocity. The analytically obtained data are integrated with the full-scale aircraft and section test data to formulate crash design velocity envelopes. The results of the study are used to suggest seat dynamic test conditions. AN - dot:92897 DA - 1987-12-01 ET - Final Report KW - Dynamics KW - Velocity KW - Dynamic tests KW - Crash tests KW - Aircraft KW - Mathematical analysis KW - Seats KW - Test procedures KW - KRASH LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1987 SN - DOT/FAA/CT-87/13 TI - Krash Parametric Sensitivity Study - Transport Category Airplanes M3 - Tech Report N1 - United States N1 - DTFA03-84-C-00004 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92897 ER -
LRFD Design Example for Steel Girder Superstructure Bridge with Commentary

Hartle, Raymond A. ;

Wilson, Kenneth E.

2003-12-01 | PDF

This document consists of a comprehensive steel girder bridge design example, with instructional commentary based on the AASHTO LRFD Bridge Design Specifications (Second Edition, 1998, including interims for 1999 through 2002). The design example and commentary are intended to serve as a guide to aid bridge design engineers with the implementation ...

08/10/2026

Title : LRFD Design Example for Steel Girder Superstructure Bridge with Commentary Creator(s) : Hartle, Raymond A.;Wilson, Kenneth E.;Amrhein, William A.;Zang, Scott D.;Bouscher, Justin W.;Volle, Laura E.; Corporate Creator(s) : Michael Baker Jr., Inc. Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration;National Highway Institute (U.S.); Contributor(s) : Saad, Thomas;Ibrahim, Firas I. Sheikh; Published Date : 2003-12-01 Report Number : FHWA-NHI-04-041 URL : https://rosap.ntl.bts.gov/view/dot/92896
Hartle, R. A., Wilson, K. E., Amrhein, W. A., Zang, S. D., Bouscher, J. W., & Volle, L. E. (2003). LRFD Design Example for Steel Girder Superstructure Bridge with Commentary (Report No. FHWA-NHI-04-041). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/92896

Hartle, Raymond A., Kenneth E. Wilson, William A. Amrhein, Scott D. Zang, Justin W. Bouscher, and Laura E. Volle. LRFD Design Example for Steel Girder Superstructure Bridge with Commentary. Report no. FHWA-NHI-04-041. United States. Department of Transportation. Federal Highway Administration, 2003. https://rosap.ntl.bts.gov/view/dot/92896.

Hartle, Raymond A., et al. LRFD Design Example for Steel Girder Superstructure Bridge with Commentary. United States. Department of Transportation. Federal Highway Administration, 2003, Report no. FHWA-NHI-04-041, ROSA P. https://rosap.ntl.bts.gov/view/dot/92896.
Export RIS Citation Information. TY - Tech Report AU - Hartle, Raymond A. AU - Wilson, Kenneth E. AU - Amrhein, William A. AU - Zang, Scott D. AU - Bouscher, Justin W. AU - Volle, Laura E. A2 - Michael Baker Jr., Inc. A3 - United States. Department of Transportation. Federal Highway Administration A3 - National Highway Institute (U.S.) A4 - Saad, Thomas K. AB - This document consists of a comprehensive steel girder bridge design example, with instructional commentary based on the AASHTO LRFD Bridge Design Specifications (Second Edition, 1998, including interims for 1999 through 2002). The design example and commentary are intended to serve as a guide to aid bridge design engineers with the implementation of the AASHTO LRFD Bridge Design Specifications, and is offered in both US Customary Units and Standard International Units. This project includes a detailed outline and a series of flowcharts that serve as the basis for the design example. The design example includes detailed design computations for the following bridge features: concrete deck, steel plate girder, bolted field splice, shear connectors, bearing stiffeners, welded connections, elastomeric bearing, cantilever abutment and wingwall, hammerhead pier, and pile foundations. To make this reference user-friendly, the numbers and titles of the design steps are consistent between the detailed outline, the flowcharts, and the design example. In addition to design computations, the design example also includes many tables and figures to illustrate the various design procedures and many AASHTO references. AASHTO references are presented in a dedicated column in the right margin of each page, immediately adjacent to the corresponding design procedure. The design example also includes commentary to explain the design logic in a user-friendly way. Additionally, tip boxes are used throughout the design example computations to present useful information, common practices, and rules of thumb for the bridge designer. Tips do not explain what must be done based on the design specifications; rather, they present suggested alternatives for the designer to consider. A figure is generally provided at the end of each design step, summarizing the design results for that particular bridge element. The analysis that served as the basis for this design example was performed using the AASHTO Opis software. A sample input file and selected excerpts from the corresponding output file are included in this document. AN - dot:92896 DA - 2003-12-01 ET - Final Submission KW - Bridge design KW - Girders KW - Steel bridges KW - Load and resistance factor design KW - Bridge decks LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2003 SN - FHWA-NHI-04-041 TI - LRFD Design Example for Steel Girder Superstructure Bridge with Commentary M3 - Tech Report N1 - United States N1 - DTFH61-02-D-63001 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92896 ER -
Tidal Hydrology, Hydraulics and Scour at Bridges, First Edition

Zevenbergen, L. W. ;

Lagasse, Peter F. (Peter Frederick)

2004-12-01 | PDF

The purpose of this manual is to provide guidance on hydraulic modeling for bridges over tidal waterways. This document includes descriptions of: (1) common physical features that affect transportation projects in coastal areas, (2) tide causing astronomical and hydrologic processes, (3) approaches for determining hydraulic conditions for bridges i ...

08/10/2026

Title : Tidal Hydrology, Hydraulics and Scour at Bridges, First Edition Creator(s) : Zevenbergen, L. W.;Lagasse, Peter F. (Peter Frederick);Edge, B. L.; Corporate Creator(s) : Ayres Associates Corporate Contributor(s) : United States. Federal Highway Administration. Office of Bridge Technology;National Highway Institute (U.S.); Contributor(s) : Arneson, Larry Published Date : 2004-12-01 Report Number : FHWA-NHI-05-077 URL : https://rosap.ntl.bts.gov/view/dot/92895
Zevenbergen, L. W., Lagasse, P. F. (. F., & Edge, B. L. (2004). Tidal Hydrology, Hydraulics and Scour at Bridges, First Edition (Report No. FHWA-NHI-05-077). United States. Federal Highway Administration. Office of Bridge Technology. https://rosap.ntl.bts.gov/view/dot/92895

Zevenbergen, L. W., Peter F. (Peter Frederick) Lagasse, and B. L. Edge. Tidal Hydrology, Hydraulics and Scour at Bridges, First Edition. Report no. FHWA-NHI-05-077. United States. Federal Highway Administration. Office of Bridge Technology, 2004. https://rosap.ntl.bts.gov/view/dot/92895.

Zevenbergen, L. W., et al. Tidal Hydrology, Hydraulics and Scour at Bridges, First Edition. United States. Federal Highway Administration. Office of Bridge Technology, 2004, Report no. FHWA-NHI-05-077, ROSA P. https://rosap.ntl.bts.gov/view/dot/92895.
Export RIS Citation Information. TY - Tech Report AU - Zevenbergen, L. W. AU - Lagasse, Peter F. (Peter Frederick) AU - Edge, B. L. A2 - Ayres Associates A3 - United States. Federal Highway Administration. Office of Bridge Technology A3 - National Highway Institute (U.S.) A4 - Arneson, Larry AB - The purpose of this manual is to provide guidance on hydraulic modeling for bridges over tidal waterways. This document includes descriptions of: (1) common physical features that affect transportation projects in coastal areas, (2) tide causing astronomical and hydrologic processes, (3) approaches for determining hydraulic conditions for bridges in tidal waterways, (4) applying the hydraulic analysis results to provide scour estimates. By using the methods in this manual, better predictions of bridge hydraulics and scour in tidal waterways will result. In many cases, simplified tidal hydraulic methods will provide adequate results. However, when the simplified methods yield overly conservative results, use of the recommended modeling approaches will provide more realistic predictions and hydraulic variables and scour. AN - dot:92895 DA - 2004-12-01 KW - Tidal currents KW - Hydraulics KW - Scour KW - Coastal engineering KW - Bridges LA - English PB - United States. Federal Highway Administration. Office of Bridge Technology PY - 2004 SN - FHWA-NHI-05-077 TI - Tidal Hydrology, Hydraulics and Scour at Bridges, First Edition M3 - Tech Report N1 - United States N1 - DTFH61-01-P-00477 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92895 ER -
Accelerated Innovation Deployment (Aid) Demonstration Project: Testing, Performance Evaluation, and Documentation of the Little Silver Creek Bridge

Abu-Hawash, Ahmad

;

Deng, Yaohua "Jimmy"

2018-08-01 | PDF

The objective of this project is to evaluate the performance of a second-generation accelerated bridge construction (ABC) bridge that utilizes two types of continuity connections: the transverse joint at pier diaphragms and the longitudinal joint between precast superstructure/deck units. The bridge replacement project located on IA 92 over Little ...

08/10/2026

Supporting Files

Title : Accelerated Innovation Deployment (Aid) Demonstration Project: Testing, Performance Evaluation, and Documentation of the Little Silver Creek Bridge Creator(s) : Abu-Hawash, Ahmad;Deng, Yaohua "Jimmy";Putz, Andrew;Phares, Brent; Corporate Creator(s) : Iowa State University. Bridge Engineering Center Corporate Contributor(s) : United States. Federal Highway Administration. Accelerated Innovation Deployment;Iowa. Department of Transportation; Published Date : 2018-08-01 URL : https://rosap.ntl.bts.gov/view/dot/92894
Abu-Hawash, A., Deng, Y. "., Putz, A., & Phares, B. (2018). Accelerated Innovation Deployment (Aid) Demonstration Project: Testing, Performance Evaluation, and Documentation of the Little Silver Creek Bridge. Iowa Department of Transportation. https://rosap.ntl.bts.gov/view/dot/92894

Abu-Hawash, Ahmad, Yaohua "Jimmy" Deng, Andrew Putz, and Brent Phares. Accelerated Innovation Deployment (Aid) Demonstration Project: Testing, Performance Evaluation, and Documentation of the Little Silver Creek Bridge. Iowa Department of Transportation, 2018. https://rosap.ntl.bts.gov/view/dot/92894.

Abu-Hawash, Ahmad, et al. Accelerated Innovation Deployment (Aid) Demonstration Project: Testing, Performance Evaluation, and Documentation of the Little Silver Creek Bridge. Iowa Department of Transportation, 2018, ROSA P. https://rosap.ntl.bts.gov/view/dot/92894.
Export RIS Citation Information. TY - Tech Report AU - Abu-Hawash, Ahmad AU - Deng, Yaohua "Jimmy" AU - Putz, Andrew AU - Phares, Brent A2 - Iowa State University. Bridge Engineering Center A3 - United States. Federal Highway Administration. Accelerated Innovation Deployment A3 - Iowa. Department of Transportation AB - The objective of this project is to evaluate the performance of a second-generation accelerated bridge construction (ABC) bridge that utilizes two types of continuity connections: the transverse joint at pier diaphragms and the longitudinal joint between precast superstructure/deck units. The bridge replacement project located on IA 92 over Little Silver Creek in Pottawattamie County, Iowa was used to demonstrate a second-generation ABC technique that had been previously used in Iowa. As a part of the holistic evaluation, the performance of an ultra-high performance concrete (UHPC) longitudinal joint detail and a high-performance material (HPM) transverse joint detail were studied through laboratory testing and numerical simulations. Additionally, field testing was conducted to evaluate the in-place integrity of the bridge. The goals of this project are to demonstrate the performance and benefits of the ABC techniques using prefabricated bridge elements and systems (PBES) and HPMs and to contribute toward increased adoption of the technologies by Iowa and other states. Through this project, the Iowa DOT gained valuable insights into the innovative ABC techniques used. The following were some of the lessons learned:• UHPC is an excellent material for longitudinal closure pour connections.• There may not be a need to use a compression block for the beam-to-beam transverse closure pours on a similar ABC project in the future.• The UHPC longitudinal joints and the HPC transverse joints at the pier location are sufficient for the modular bridge systems of ABC projects. AN - dot:92894 DA - 2018-08-01 ET - Final Report KW - Accelerated bridge construction KW - Joints KW - Longitudinal joints KW - Transverse joints KW - Ultra high performance concrete KW - Testing KW - Performance evaluations KW - bridge replacement KW - longitudinal bridge connections KW - transverse bridge connections LA - English PB - Iowa Department of Transportation PY - 2018 TI - Accelerated Innovation Deployment (Aid) Demonstration Project: Testing, Performance Evaluation, and Documentation of the Little Silver Creek Bridge M3 - Tech Report N1 - United States N1 - InTrans Project 14-524 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92894 ER -
Track Geometry Predictions Using Point and Segment Processing [Research Results]

Baillargeon, Jay ;

Thompson, Hugh

2026-07-01 | PDF

This report presents the results of the literature review and the initial investigation into the most appropriate methods for forecasting foot-by-foot track geometry data. Point processing with the SARIMAX model and segment processing with Meta's Prophet model both produced accurate forecasts for these data. Adding exogenous variables to both model ...

08/10/2026

Title : Track Geometry Predictions Using Point and Segment Processing [Research Results] Creator(s) : Baillargeon, Jay;Thompson, Hugh; Corporate Creator(s) : United States. Department of Transportation. Federal Railroad Administration Published Date : 2026-07-01 Report Number : RR 26-01 URL : https://rosap.ntl.bts.gov/view/dot/92893
Baillargeon, J., & Thompson, H. (2026). Track Geometry Predictions Using Point and Segment Processing [Research Results] (Report No. RR 26-01). United States. Department of Transportation. Federal Railroad Administration. https://rosap.ntl.bts.gov/view/dot/92893

Baillargeon, Jay and Hugh Thompson. Track Geometry Predictions Using Point and Segment Processing [Research Results]. Report no. RR 26-01. United States. Department of Transportation. Federal Railroad Administration, 2026. https://rosap.ntl.bts.gov/view/dot/92893.

Baillargeon, Jay, and Hugh Thompson Track Geometry Predictions Using Point and Segment Processing [Research Results]. United States. Department of Transportation. Federal Railroad Administration, 2026, Report no. RR 26-01, ROSA P. https://rosap.ntl.bts.gov/view/dot/92893.
Export RIS Citation Information. TY - Brief AU - Baillargeon, Jay AU - Thompson, Hugh A2 - United States. Department of Transportation. Federal Railroad Administration AB - This report presents the results of the literature review and the initial investigation into the most appropriate methods for forecasting foot-by-foot track geometry data. Point processing with the SARIMAX model and segment processing with Meta's Prophet model both produced accurate forecasts for these data. Adding exogenous variables to both models to account for unexpected track maintenance between measurements significantly improved the predictions. Using these models, along with frequent Autonomous Track Geometry Measurement System (ATGMS) measurements, can accurately predict the future behavior of track geometry and help plan preventive maintenance more effectively. Case studies applying these methods will be completed as the next step in this research. AN - dot:92893 DA - 2026-07-01 ET - Research Results KW - Predictive models KW - Forecasting KW - Time series KW - Descriptive statistics KW - Railroad tracks KW - ARIMA KW - Prophet LA - English PB - United States. Department of Transportation. Federal Railroad Administration PY - 2026 SN - RR 26-01 TI - Track Geometry Predictions Using Point and Segment Processing [Research Results] M3 - Brief N1 - United States N1 - 693JJ6-20-F000090 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92893 ER -
Positive Train Control (PTC) Reliability, Availability, and Maintainability (RAM) Study - Phase 2

Vieira, Paulo

;

Brosseau, Joseph

2026-07-29 | PDF

Between September 2018 and November 2021, the Federal Railroad Administration (FRA) sponsored a research team from Transportation Technology Center, Inc. (TTCI), now MxV Rail, to investigate and address areas of Reliability, Availability, and Maintainability (RAM) that are critical to the long-term sustainability and operation of Positive Train Con ...

08/10/2026

Title : Positive Train Control (PTC) Reliability, Availability, and Maintainability (RAM) Study - Phase 2 Creator(s) : Vieira, Paulo;Brosseau, Joseph;Polivka, Alan;Rosales-Yepez, Jose; Corporate Creator(s) : Transportation Technology Center, Inc. Corporate Contributor(s) : United States. Department of Transportation. Federal Railroad Administration. Office of Research, Development and Technology Published Date : 2026-07-29 Report Number : DOT/FRA/ORD-26/09 URL : https://rosap.ntl.bts.gov/view/dot/92892
Vieira, P., Brosseau, J., Polivka, A., & Rosales-Yepez, J. (2026). Positive Train Control (PTC) Reliability, Availability, and Maintainability (RAM) Study - Phase 2 (Report No. DOT/FRA/ORD-26/09). United States. Department of Transportation. Federal Railroad Administration. https://rosap.ntl.bts.gov/view/dot/92892

Vieira, Paulo, Joseph Brosseau, Alan Polivka, and Jose Rosales-Yepez. Positive Train Control (PTC) Reliability, Availability, and Maintainability (RAM) Study - Phase 2. Report no. DOT/FRA/ORD-26/09. United States. Department of Transportation. Federal Railroad Administration, 2026. https://rosap.ntl.bts.gov/view/dot/92892.

Vieira, Paulo, et al. Positive Train Control (PTC) Reliability, Availability, and Maintainability (RAM) Study - Phase 2. United States. Department of Transportation. Federal Railroad Administration, 2026, Report no. DOT/FRA/ORD-26/09, ROSA P. https://rosap.ntl.bts.gov/view/dot/92892.
Export RIS Citation Information. TY - Tech Report AU - Vieira, Paulo AU - Brosseau, Joseph AU - Polivka, Alan AU - Rosales-Yepez, Jose A2 - Transportation Technology Center, Inc. A3 - United States. Department of Transportation. Federal Railroad Administration. Office of Research, Development and Technology AB - Between September 2018 and November 2021, the Federal Railroad Administration (FRA) sponsored a research team from Transportation Technology Center, Inc. (TTCI), now MxV Rail, to investigate and address areas of Reliability, Availability, and Maintainability (RAM) that are critical to the long-term sustainability and operation of Positive Train Control (PTC) systems. Although today's PTC systems provide safety benefits, they can significantly impact railroad operations when they stop or slow trains unnecessarily. The research team developed methods and tools to analyze and quantify the negative impact of PTC-related events and applied them to data collected from actual PTC operations to produce RAM growth recommendations. AN - dot:92892 DA - 2026-07-29 ET - Final Report KW - Positive train control KW - Automatic train control KW - Railroad operations KW - Reliability KW - Systems availability KW - Maintenance KW - Reliability, Availability and Maintainability [RAM] LA - English PB - United States. Department of Transportation. Federal Railroad Administration PY - 2026 SN - DOT/FRA/ORD-26/09 TI - Positive Train Control (PTC) Reliability, Availability, and Maintainability (RAM) Study - Phase 2 M3 - Tech Report N1 - United States N1 - DTFR5311D00008L DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92892 ER -
Concrete Overlay on I-35 Forest Lake, MN: Summary Report

United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements

2018-07-01 | PDF

The Federal Highway Administration (FHWA) Mobile Concrete Trailer (MCT) visited the concrete overlay project over I-35 in Forest Lake, MN from July 16 through 26 at the request of Maria Masten with the Minnesota Department of Transportation. The objective of the MCT visit was to demonstrate innovative technologies currently in the implementation ph ...

08/10/2026

Title : Concrete Overlay on I-35 Forest Lake, MN: Summary Report Corporate Creator(s) : United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements Published Date : 2018-07-01 Report Number : FHWA MCT Project # MN1803 URL : https://rosap.ntl.bts.gov/view/dot/92891
United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements (2018). Concrete Overlay on I-35 Forest Lake, MN: Summary Report (Report No. FHWA MCT Project # MN1803). United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements. https://rosap.ntl.bts.gov/view/dot/92891

United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements. Concrete Overlay on I-35 Forest Lake, MN: Summary Report. Report no. FHWA MCT Project # MN1803. United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements, 2018. https://rosap.ntl.bts.gov/view/dot/92891.

United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements Concrete Overlay on I-35 Forest Lake, MN: Summary Report. United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements, 2018, Report no. FHWA MCT Project # MN1803, ROSA P. https://rosap.ntl.bts.gov/view/dot/92891.
Export RIS Citation Information. TY - Tech Report A2 - United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements AB - The Federal Highway Administration (FHWA) Mobile Concrete Trailer (MCT) visited the concrete overlay project over I-35 in Forest Lake, MN from July 16 through 26 at the request of Maria Masten with the Minnesota Department of Transportation. The objective of the MCT visit was to demonstrate innovative technologies currently in the implementation phase; this is in conjunction with the work being done on this project using FHWA Performance Engineered Mixtures Implementation Incentive funding. This report summarizes the test results, observations, and other activities conducted during this visit. Numerical values of the test results are presented in the Appendix. AN - dot:92891 DA - 2018-07-01 KW - Concrete pavements KW - Concrete overlays KW - Engineered materials KW - Technological innovations KW - Paving LA - English PB - United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements PY - 2018 SN - FHWA MCT Project # MN1803 TI - Concrete Overlay on I-35 Forest Lake, MN: Summary Report M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92891 ER -
Development of Steel Design Details and Selection Criteria for Cost-Effective and Innovative Steel Bridges in Colorado

van de Lindt, John W. ;

Stone, Alexander J.

2008-12-01 | PDF

In recent years, prestressed concrete bridges have dominated the bridge type selection processes in Colorado. This can be attributed to a lack of steel mills combined with a strong presence of precast fabricators in the region. In addition, a lack of readily available economical and innovative procedures to design and construct steel bridges has hi ...

08/10/2026

Title : Development of Steel Design Details and Selection Criteria for Cost-Effective and Innovative Steel Bridges in Colorado Creator(s) : van de Lindt, John W.;Stone, Alexander J.;Chen, Suren; Corporate Creator(s) : Colorado State University. Department of Civil Engineering Corporate Contributor(s) : Colorado Department of Transportation. Office of Applied Research;United States. Department of Transportation. Federal Highway Administration; Published Date : 2008-12-01 Report Number : CDOT-2008-12 URL : https://rosap.ntl.bts.gov/view/dot/92890
van de Lindt, J. W., Stone, A. J., & Chen, S. (2008). Development of Steel Design Details and Selection Criteria for Cost-Effective and Innovative Steel Bridges in Colorado (Report No. CDOT-2008-12). Colorado Department of Transportation. Applied Research & Innovations Branch. https://rosap.ntl.bts.gov/view/dot/92890

van de Lindt, John W., Alexander J. Stone, and Suren Chen. Development of Steel Design Details and Selection Criteria for Cost-Effective and Innovative Steel Bridges in Colorado. Report no. CDOT-2008-12. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008. https://rosap.ntl.bts.gov/view/dot/92890.

van de Lindt, John W., et al. Development of Steel Design Details and Selection Criteria for Cost-Effective and Innovative Steel Bridges in Colorado. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008, Report no. CDOT-2008-12, ROSA P. https://rosap.ntl.bts.gov/view/dot/92890.
Export RIS Citation Information. TY - Tech Report AU - van de Lindt, John W. AU - Stone, Alexander J. AU - Chen, Suren A2 - Colorado State University. Department of Civil Engineering A3 - Colorado Department of Transportation. Office of Applied Research A3 - United States. Department of Transportation. Federal Highway Administration AB - In recent years, prestressed concrete bridges have dominated the bridge type selection processes in Colorado. This can be attributed to a lack of steel mills combined with a strong presence of precast fabricators in the region. In addition, a lack of readily available economical and innovative procedures to design and construct steel bridges has hindered the industry in certain areas such as Colorado. During this research it was identified that designing steel girders as simply supported for the non composite dead loads and continuous for composite dead loads and live loads would provide economy. A preliminary girder selection software was created using this design procedure. The software takes user inputted data, such as span length, width, number of girders along with various other design inputs, and displays the lightest wide flange beam size that would support the loads using AASHTO LRFD Design Specifications. Using the girder selection software, design charts and tables were created to outline structural steel weight to span length and number of girders. AN - dot:92890 DA - 2008-12-01 ET - Final Report KW - Steel bridges KW - Girders KW - Flanges KW - Beams KW - Composite materials KW - Loads KW - Live loads KW - Static loads KW - Data collection KW - Cost effectiveness KW - Materials selection KW - Innovation KW - steel girders KW - simple made continuous steel bridges KW - wide flange beams LA - English PB - Colorado Department of Transportation. Applied Research & Innovations Branch PY - 2008 SN - CDOT-2008-12 TI - Development of Steel Design Details and Selection Criteria for Cost-Effective and Innovative Steel Bridges in Colorado M3 - Tech Report N1 - United States N1 - 81.30 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92890 ER -
US 20 Expansion Holstein, IA: Summary Report

United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements

2018-07-01 | PDF

The Federal Highway Administration (FHWA) Mobile Concrete Trailer (MCT) visited the US-20 expansion project in Holstein, IA from July 8 to 13 and July 29 to Aug 3 at the request of Todd Hanson with the Iowa Department of Transportation. The objective of the MCT visit was to demonstrate innovative technologies currently in the implementation phase; ...

08/10/2026

Title : US 20 Expansion Holstein, IA: Summary Report Corporate Creator(s) : United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements Published Date : 2018-07-01 Report Number : FHWA MCT Project # IA1802 URL : https://rosap.ntl.bts.gov/view/dot/92889
United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements (2018). US 20 Expansion Holstein, IA: Summary Report (Report No. FHWA MCT Project # IA1802). United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements. https://rosap.ntl.bts.gov/view/dot/92889

United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements. US 20 Expansion Holstein, IA: Summary Report. Report no. FHWA MCT Project # IA1802. United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements, 2018. https://rosap.ntl.bts.gov/view/dot/92889.

United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements US 20 Expansion Holstein, IA: Summary Report. United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements, 2018, Report no. FHWA MCT Project # IA1802, ROSA P. https://rosap.ntl.bts.gov/view/dot/92889.
Export RIS Citation Information. TY - Tech Report A2 - United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements AB - The Federal Highway Administration (FHWA) Mobile Concrete Trailer (MCT) visited the US-20 expansion project in Holstein, IA from July 8 to 13 and July 29 to Aug 3 at the request of Todd Hanson with the Iowa Department of Transportation. The objective of the MCT visit was to demonstrate innovative technologies currently in the implementation phase; this is in conjunction with the work being done on this project using FHWA Performance Engineered Mixtures (PEM) Implementation Incentive funding. The MCT Open House was conducted in coordination with the PEM presentation and the event was very well attended. The Iowa Concrete Paving Association (ICPA) and the National Concrete Pavement Technology Center assisted with this event. This report summarizes the test results, observations, and other activities conducted during this visit. Numerical values of the test results are presented in the Appendix. AN - dot:92889 DA - 2018-07-01 KW - Concrete pavements KW - Concrete tests KW - Engineered materials KW - Technological innovations KW - Paving LA - English PB - United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements PY - 2018 SN - FHWA MCT Project # IA1802 TI - US 20 Expansion Holstein, IA: Summary Report M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92889 ER -
I-70 Reconstruction Grainfield, KS: Summary Report

United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements

2019-08-01 | PDF

The Federal Highway Administration (FHWA) Mobile Concrete Technology Center (MCTC) visited the I-70 pavement replacement project in Grainfield, Kansas from July 29 to August 8, 2019. The objective of the MCTC visit was to demonstrate innovative technologies currently in the implementation phase; this site visit is in conjunction with monitoring and ...

08/10/2026

Title : I-70 Reconstruction Grainfield, KS: Summary Report Corporate Creator(s) : United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements Published Date : 2019-08-01 Report Number : FHWA MCTC Project # KS1905 URL : https://rosap.ntl.bts.gov/view/dot/92888
United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements (2019). I-70 Reconstruction Grainfield, KS: Summary Report (Report No. FHWA MCTC Project # KS1905). United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements. https://rosap.ntl.bts.gov/view/dot/92888

United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements. I-70 Reconstruction Grainfield, KS: Summary Report. Report no. FHWA MCTC Project # KS1905. United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements, 2019. https://rosap.ntl.bts.gov/view/dot/92888.

United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements I-70 Reconstruction Grainfield, KS: Summary Report. United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements, 2019, Report no. FHWA MCTC Project # KS1905, ROSA P. https://rosap.ntl.bts.gov/view/dot/92888.
Export RIS Citation Information. TY - Tech Report A2 - United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements AB - The Federal Highway Administration (FHWA) Mobile Concrete Technology Center (MCTC) visited the I-70 pavement replacement project in Grainfield, Kansas from July 29 to August 8, 2019. The objective of the MCTC visit was to demonstrate innovative technologies currently in the implementation phase; this site visit is in conjunction with monitoring and testing work being done on this project using FHWA Performance Engineered Mixtures (PEM) Implementation Incentive funding. During this visit, the MCTC conducted a PEM Open House on August 8, 2019 in coordination with the National Concrete Pavement Technology Center (CP Tech Center), and Todd LaTorella of the Missouri-Kansas Concrete Paving Association. A planned companion workshop titled "Ensuring Quality in the Concrete Paving Process" has been deferred until in-person training events can be held. This report summarizes the test results, observations, and other activities conducted during this visit. Numerical values of the test results are presented in the Appendices. AN - dot:92888 DA - 2019-08-01 KW - Concrete pavements KW - Concrete tests KW - Engineered materials KW - Technological innovations KW - Paving LA - English PB - United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements PY - 2019 SN - FHWA MCTC Project # KS1905 TI - I-70 Reconstruction Grainfield, KS: Summary Report M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92888 ER -
Trends in Computer Vision: An Overview of Vision-Based Data Acquisition and Processing Technology and Its Potential for the Transportation Sector

Guan, Adrian ;

Bayless, Steven H.

2011-12-15 | PDF

This report foresees imaging technology rapidly advancing in applications that require simple object detection, such as vehicle collision avoidance and advanced traffic management systems. The paper speculates that future advances, such as improved object detection algorithms, machine learning and "augmented reality" may influence a number of trans ...

08/10/2026

Title : Trends in Computer Vision: An Overview of Vision-Based Data Acquisition and Processing Technology and Its Potential for the Transportation Sector Creator(s) : Guan, Adrian;Bayless, Steven H.;Neelakantan, Radha; Corporate Creator(s) : The Intelligent Transportation Society of America Corporate Contributor(s) : United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office (ITSJPO);United States. Department of Transportation. Federal Highway Administration; Published Date : 2011-12-15 Report Number : FHWA-JPO-12-026 URL : https://rosap.ntl.bts.gov/view/dot/92887
Guan, A., Bayless, S. H., & Neelakantan, R. (2011). Trends in Computer Vision: An Overview of Vision-Based Data Acquisition and Processing Technology and Its Potential for the Transportation Sector (Report No. FHWA-JPO-12-026). United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office (ITS JPO). https://rosap.ntl.bts.gov/view/dot/92887

Guan, Adrian, Steven H. Bayless, and Radha Neelakantan. Trends in Computer Vision: An Overview of Vision-Based Data Acquisition and Processing Technology and Its Potential for the Transportation Sector. Report no. FHWA-JPO-12-026. United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office (ITS JPO), 2011. https://rosap.ntl.bts.gov/view/dot/92887.

Guan, Adrian, et al. Trends in Computer Vision: An Overview of Vision-Based Data Acquisition and Processing Technology and Its Potential for the Transportation Sector. United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office (ITS JPO), 2011, Report no. FHWA-JPO-12-026, ROSA P. https://rosap.ntl.bts.gov/view/dot/92887.
Export RIS Citation Information. TY - Tech Report AU - Guan, Adrian AU - Bayless, Steven H. AU - Neelakantan, Radha A2 - The Intelligent Transportation Society of America A3 - United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office (ITSJPO) A3 - United States. Department of Transportation. Federal Highway Administration AB - This report foresees imaging technology rapidly advancing in applications that require simple object detection, such as vehicle collision avoidance and advanced traffic management systems. The paper speculates that future advances, such as improved object detection algorithms, machine learning and "augmented reality" may influence a number of transportation applications in the automotive, industrial, and infrastructure sectors. This report is part of the Connected Vehicle Technology Scan and Assessment project. This two year scanning series of Connected Vehicle Insight reports will assess emerging, converging and enabling technologies outside the domain of mainstream transportation research. ITS America seeks technologies that will potentially impact state-of-the-art or state-of-the-practice in ITS deployment over the next decade, with an emphasis on the "connected vehicle." The Technology Scan Series notes trends, technologies, and innovations that could influence, or be leveraged as part of, next-generation intelligent transportation systems within the next five to seven years. The series' focus is on developments in applied science and engineering and innovation in data acquisition, dissemination, processing, and management technologies and techniques that can potentially support transportation. AN - dot:92887 DA - 2011-12-15 KW - Computer vision KW - Object detection KW - Crash avoidance systems KW - Advanced traffic management systems KW - Intelligent transportation systems LA - English PB - United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office (ITS JPO) PY - 2011 SN - FHWA-JPO-12-026 TI - Trends in Computer Vision: An Overview of Vision-Based Data Acquisition and Processing Technology and Its Potential for the Transportation Sector M3 - Tech Report N1 - United States N1 - DTFH61-08-D-000111 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92887 ER -
Performance Evaluation of Various HMA Rehabilitation Strategies

Shuler, Scott ;

Schmidt, Christopher

2008-12-01 | PDF

This study evaluates the performance of eight hot mix asphalt (HMA) rehabilitation strategies utilized by the Colorado Department of Transportation (CDOT). The rehabilitation strategies are: 2 to 4-inch overlay without pretreatment; planning and overlay; stone matrix asphalt overlay; full-depth reclamation and overlay; heater scarification and over ...

08/10/2026

Title : Performance Evaluation of Various HMA Rehabilitation Strategies Creator(s) : Shuler, Scott;Schmidt, Christopher; Corporate Creator(s) : Colorado State University Corporate Contributor(s) : Colorado Department of Transportation. Office of Applied Research;United States. Department of Transportation. Federal Highway Administration; Published Date : 2008-12-01 Report Number : CDOT-2008-9 URL : https://rosap.ntl.bts.gov/view/dot/92886
Shuler, S., & Schmidt, C. (2008). Performance Evaluation of Various HMA Rehabilitation Strategies (Report No. CDOT-2008-9). Colorado Department of Transportation. Applied Research & Innovations Branch. https://rosap.ntl.bts.gov/view/dot/92886

Shuler, Scott and Christopher Schmidt. Performance Evaluation of Various HMA Rehabilitation Strategies. Report no. CDOT-2008-9. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008. https://rosap.ntl.bts.gov/view/dot/92886.

Shuler, Scott, and Christopher Schmidt Performance Evaluation of Various HMA Rehabilitation Strategies. Colorado Department of Transportation. Applied Research & Innovations Branch, 2008, Report no. CDOT-2008-9, ROSA P. https://rosap.ntl.bts.gov/view/dot/92886.
Export RIS Citation Information. TY - Tech Report AU - Shuler, Scott AU - Schmidt, Christopher A2 - Colorado State University A3 - Colorado Department of Transportation. Office of Applied Research A3 - United States. Department of Transportation. Federal Highway Administration AB - This study evaluates the performance of eight hot mix asphalt (HMA) rehabilitation strategies utilized by the Colorado Department of Transportation (CDOT). The rehabilitation strategies are: 2 to 4-inch overlay without pretreatment; planning and overlay; stone matrix asphalt overlay; full-depth reclamation and overlay; heater scarification and overlay; heater remix and overlay; heater repaving and overlay; and cold-in-place recycling and overlay. Performance was evaluated with respect to six independent variables: (1) Performance Grade (PG) binder temperature range, (2) traffic volume, (3) highway classification, (4) maximum aggregate size, (5) CDOT region, and (6) climate. Data analyzed in the study was obtained from the CDOT Pavement Management System Program. Results of this analysis indicate that the cold planning and overlay strategy outperforms the other rehabilitation methods with two to four-inch overlays performing second best. The heater scarification and overlay strategy performed poorest of the eight strategies. The average time required for these pavements to reach the pre-rehabilitation condition was from six to fourteen years based on a linear regression model. However, this model may overestimate rehabilitation life span since it is likely that a linear relationship is not valid for the entire rehabilitation strategy life cycle. Pavements were rehabilitated before reaching the zero service life threshold except when fatigue cracking was present. In the case of fatigue cracking, four rehabilitation strategies studied exceeded the zero service life threshold. This indicates that rehabilitation would have been warranted earlier in the life of these pavements. As a result, the expected life of the rehabilitation strategies utilized on these pavements may be shorter than could be expected had rehabilitation been done before distress reached this high level. This may explain why the heater scarification and overlay strategy performed poorer than other techniques since fatigue distress prior to rehabilitation on these projects exceeded the zero remaining service life threshold by nearly 20 percent. AN - dot:92886 DA - 2008-12-01 ET - Final Report KW - Pavement performance KW - Life cycle analysis KW - Hot mix asphalt KW - Evaluation KW - Data analysis KW - Rehabilitation KW - Performance KW - Resurfacing LA - English PB - Colorado Department of Transportation. Applied Research & Innovations Branch PY - 2008 SN - CDOT-2008-9 TI - Performance Evaluation of Various HMA Rehabilitation Strategies M3 - Tech Report N1 - United States N1 - 12.68 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92886 ER -
Connected Vehicle Deployment Technical Assistance: Procurement Considerations for Security Credential Management System (SCMS) for a Connected Vehicle System Acquisition

Noblis, Inc.

2021-05-01 | PDF

This document is intended to assist project managers who are planning deployment of connected vehicle (CV) systems in the procurement of Security Credential Management System (SCMS) services. A SCMS is a critical component of a connected vehicle environment serving as a message security solution for Vehicle-to-Everything (V2X). The content in this ...

08/10/2026

Title : Connected Vehicle Deployment Technical Assistance: Procurement Considerations for Security Credential Management System (SCMS) for a Connected Vehicle System Acquisition Corporate Creator(s) : Noblis, Inc. Corporate Contributor(s) : United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office (ITSJPO);United States. Department of Transportation. Federal Highway Administration; Contributor(s) : Noch, Michelle Published Date : 2021-05-01 Report Number : FHWA-JPO-21-862 URL : https://rosap.ntl.bts.gov/view/dot/92885
Noblis, Inc. (2021). Connected Vehicle Deployment Technical Assistance: Procurement Considerations for Security Credential Management System (SCMS) for a Connected Vehicle System Acquisition (Report No. FHWA-JPO-21-862). United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office (ITS JPO). https://rosap.ntl.bts.gov/view/dot/92885

Noblis, Inc.. Connected Vehicle Deployment Technical Assistance: Procurement Considerations for Security Credential Management System (SCMS) for a Connected Vehicle System Acquisition. Report no. FHWA-JPO-21-862. United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office (ITS JPO), 2021. https://rosap.ntl.bts.gov/view/dot/92885.

Noblis, Inc. Connected Vehicle Deployment Technical Assistance: Procurement Considerations for Security Credential Management System (SCMS) for a Connected Vehicle System Acquisition. United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office (ITS JPO), 2021, Report no. FHWA-JPO-21-862, ROSA P. https://rosap.ntl.bts.gov/view/dot/92885.
Export RIS Citation Information. TY - Tech Report A2 - Noblis, Inc. A3 - United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office (ITSJPO) A3 - United States. Department of Transportation. Federal Highway Administration A4 - Noch, Michelle AB - This document is intended to assist project managers who are planning deployment of connected vehicle (CV) systems in the procurement of Security Credential Management System (SCMS) services. A SCMS is a critical component of a connected vehicle environment serving as a message security solution for Vehicle-to-Everything (V2X). The content in this resource document is based on other early deployers' experiences with the procurement and use of a SCMS for CV. The objective of this document is to share these experiences to help other projects understand and ask relevant questions. As projects are often oriented toward CV deployment and not SCMS by itself, there can be a gap in understanding how SCMS should be treated within the project, and this resource aims to help fill this gap. It builds upon the SCMS technical primer and presents project managers and their teams with considerations that will help make choices in the early stages of a project relating to procuring SCMS services. This may be in the form of asking informed questions or better understanding the work of supporting consultants - the guide is not intended to provide a definitive technical or official procurement specification. AN - dot:92885 DA - 2021-05-01 ET - Final Report KW - Computer security KW - Connected vehicles KW - Mobile communication systems KW - Vehicle to everything communications KW - Procurement LA - English PB - United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office (ITS JPO) PY - 2021 SN - FHWA-JPO-21-862 TI - Connected Vehicle Deployment Technical Assistance: Procurement Considerations for Security Credential Management System (SCMS) for a Connected Vehicle System Acquisition M3 - Tech Report N1 - United States N1 - DTFH61-16-D-00036 DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92885 ER -
Traffic Volume Trends: June 2026

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

2026-08-03 | Traffic Volume Trends | PDF

Traffic Volume Trends is a monthly report based on hourly traffic count data reported by the States. These data are collected at approximately 5,000 continuous traffic counting locations nationwide and are used to estimate the percent change in traffic for the current month compared with the same month in the previous year. Estimates are re-adjuste ...

08/10/2026

Title : Traffic Volume Trends: June 2026 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Published Date : 2026-08-03 Series : Traffic Volume Trends URL : https://rosap.ntl.bts.gov/view/dot/92884
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2026). Traffic Volume Trends: June 2026. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/92884

United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Traffic Volume Trends: June 2026. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2026. https://rosap.ntl.bts.gov/view/dot/92884.

United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Traffic Volume Trends: June 2026. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2026, ROSA P. https://rosap.ntl.bts.gov/view/dot/92884.
Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information AB - Traffic Volume Trends is a monthly report based on hourly traffic count data reported by the States. These data are collected at approximately 5,000 continuous traffic counting locations nationwide and are used to estimate the percent change in traffic for the current month compared with the same month in the previous year. Estimates are re-adjusted annually to match the vehicle miles of travel from the Highway Performance Monitoring System and are continually updated with additional data. AN - dot:92884 DA - 2026-08-03 KW - Traffic volume KW - Statistical trends KW - Traffic counts KW - Traffic surveillance KW - Data collection LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information PY - 2026 T2 - Traffic Volume Trends TI - Traffic Volume Trends: June 2026 M3 - Statistical Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92884 ER -
Work Zone Speed Control

Outcalt, William (Skip)

2009-01-01 | PDF

Traffic in the lanes next to work zones presents a continuous hazard to workers. By reducing the speed of the traffic through the work zone, the hazard can be mitigated somewhat. Accurate data on the effectiveness of the simultaneous use of radar detection devices and law enforcement support in work zones would be valuable information for equipment ...

08/10/2026

Title : Work Zone Speed Control Creator(s) : Outcalt, William (Skip) Corporate Creator(s) : Colorado Department of Transportation. Office of Applied Research Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Administration Published Date : 2009-01-01 Report Number : CDOT-2009-3 URL : https://rosap.ntl.bts.gov/view/dot/92883
Outcalt, W. (. (2009). Work Zone Speed Control (Report No. CDOT-2009-3). Colorado Department of Transportation. Applied Research & Innovations Branch. https://rosap.ntl.bts.gov/view/dot/92883

Outcalt, William (Skip). Work Zone Speed Control. Report no. CDOT-2009-3. Colorado Department of Transportation. Applied Research & Innovations Branch, 2009. https://rosap.ntl.bts.gov/view/dot/92883.

Outcalt, William (Skip) Work Zone Speed Control. Colorado Department of Transportation. Applied Research & Innovations Branch, 2009, Report no. CDOT-2009-3, ROSA P. https://rosap.ntl.bts.gov/view/dot/92883.
Export RIS Citation Information. TY - Tech Report AU - Outcalt, William (Skip) A2 - Colorado Department of Transportation. Office of Applied Research A3 - United States. Department of Transportation. Federal Highway Administration AB - Traffic in the lanes next to work zones presents a continuous hazard to workers. By reducing the speed of the traffic through the work zone, the hazard can be mitigated somewhat. Accurate data on the effectiveness of the simultaneous use of radar detection devices and law enforcement support in work zones would be valuable information for equipment purchasing and budgeting purposes. A literature search found 17 studies relating to work zone speed control and investigating the use of variable message signs (VMS), presence of law enforcement, and various signing methods. However, none provided current documentation of the effectiveness of the use of a VMS in conjunction with the presence of a law enforcement officer who was ticketing violators. The study found that the most dependable method of ensuring compliance with posted work zone speed limits is through the presence of law enforcement in the work zone, citing speeders. AN - dot:92883 DA - 2009-01-01 ET - Final Report KW - Traffic law enforcement KW - Signs KW - Variable message signs KW - Radar devices KW - Highways KW - Work zones KW - Work zone safety KW - Speed control KW - Speed limits KW - Highway maintenance KW - Traffic lanes KW - Literature reviews LA - English PB - Colorado Department of Transportation. Applied Research & Innovations Branch PY - 2009 SN - CDOT-2009-3 TI - Work Zone Speed Control M3 - Tech Report N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92883 ER -
The Washington Air Route Traffic Control Center

United States. Department of Transportation. Federal Aviation Administration

1987-12-31 | PDF

Federal Aviation Administration brochure describing the Air Route Traffic Control Center located at Leesburg, Virginia.

08/10/2026

Title : The Washington Air Route Traffic Control Center Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration Published Date : 1987-12-31 DOI : https://doi.org/10.21949/1530442
United States. Department of Transportation. Federal Aviation Administration (1987). The Washington Air Route Traffic Control Center. United States. Department of Transportation. Federal Aviation Administration. https://doi.org/10.21949/1530442

United States. Department of Transportation. Federal Aviation Administration. The Washington Air Route Traffic Control Center. United States. Department of Transportation. Federal Aviation Administration, 1987. https://doi.org/10.21949/1530442.

United States. Department of Transportation. Federal Aviation Administration The Washington Air Route Traffic Control Center. United States. Department of Transportation. Federal Aviation Administration, 1987, ROSA P. https://doi.org/10.21949/1530442.
Export RIS Citation Information. TY - Booklet/Pamphlet A2 - United States. Department of Transportation. Federal Aviation Administration AB - Federal Aviation Administration brochure describing the Air Route Traffic Control Center located at Leesburg, Virginia. AN - dot:92882 DA - 1987-12-31 DO - https://doi.org/10.21949/1530442 KW - Air traffic control facilities KW - Air route traffic control centers KW - Aircraft separation KW - Instrument flying KW - Visual flight KW - Aircraft pilotage LA - English PB - United States. Department of Transportation. Federal Aviation Administration PY - 1987 TI - The Washington Air Route Traffic Control Center M3 - Booklet/Pamphlet N1 - United States DB - ROSA P UR - https://rosap.ntl.bts.gov/view/dot/92882 ER -

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