This report assesses the effects of the Federal Highway Administration's (FHWA's) investment in the Innovative Intersection Design research program and related activities on the availability and quality of such research; awareness and adoption of innovative intersection designs in the United States; and impact of deployed innovative intersection de
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Badgley, J., Fowler, J., Mahavier, K., & Peirce, S. (2021). FHWA Research and Technology Evaluation: Innovative Intersection Design (Report No. FHWA-HRT-21-024). United States. Federal Highway Administration. Office of Corporate Research, Technology, and Innovation Management. https://rosap.ntl.bts.gov/view/dot/56950
Badgley, Jonathan, Joshua Fowler, Kendall Mahavier, and Sean Peirce. FHWA Research and Technology Evaluation: Innovative Intersection Design. Report no. FHWA-HRT-21-024. United States. Federal Highway Administration. Office of Corporate Research, Technology, and Innovation Management, 2021. https://rosap.ntl.bts.gov/view/dot/56950.
Badgley, Jonathan, et al. FHWA Research and Technology Evaluation: Innovative Intersection Design. United States. Federal Highway Administration. Office of Corporate Research, Technology, and Innovation Management, 2021, Report no. FHWA-HRT-21-024, ROSA P. https://rosap.ntl.bts.gov/view/dot/56950.
Through this project, researchers evaluated the safety effects of guardrails, utility poles, and side slopes using safety data from Indiana and Pennsylvania. Safety evaluations in this project focused on total, fatal-and-injury, and roadway-departure crash risk. Crash modification factors (CMFs) and benefit–cost (B/C) ratios were developed for the
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Avelar, R., Dixon, K., Ashraf, S., & Jhamb, A. (2021). Developing Crash Modification Factors for Guardrails, Utility Poles, and Side-Slope Improvements (Report No. FHWA-HRT-21-075). United States. Federal Highway Administration. Office of Safety Research and Development. https://rosap.ntl.bts.gov/view/dot/57955
Avelar, Raul, Karen Dixon, Sruthi Ashraf, and Ankit Jhamb. Developing Crash Modification Factors for Guardrails, Utility Poles, and Side-Slope Improvements. Report no. FHWA-HRT-21-075. United States. Federal Highway Administration. Office of Safety Research and Development, 2021. https://rosap.ntl.bts.gov/view/dot/57955.
Avelar, Raul, et al. Developing Crash Modification Factors for Guardrails, Utility Poles, and Side-Slope Improvements. United States. Federal Highway Administration. Office of Safety Research and Development, 2021, Report no. FHWA-HRT-21-075, ROSA P. https://rosap.ntl.bts.gov/view/dot/57955.
United States. Federal Highway Administration. Center for Accelerating Innovation
2021-08-01
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Innovator, published by the FHWA Center for Accelerating Innovation, advances implementation of innovative technologies and processes in the highway industry. Its audience is transportation professionals in highway agencies, trade and research groups, academia and the private sector, and the driving public.
United States. Federal Highway Administration. Center for Accelerating Innovation (2021). Innovator - July/August 2021 - Volume 15, Issue 85 (Report No. FHWA-21-CAI-021). United States. Federal Highway Administration. Center for Accelerating Innovation. https://rosap.ntl.bts.gov/view/dot/57059
United States. Federal Highway Administration. Center for Accelerating Innovation. Innovator - July/August 2021 - Volume 15, Issue 85. Report no. FHWA-21-CAI-021. United States. Federal Highway Administration. Center for Accelerating Innovation, 2021. https://rosap.ntl.bts.gov/view/dot/57059.
United States. Federal Highway Administration. Center for Accelerating Innovation Innovator - July/August 2021 - Volume 15, Issue 85. United States. Federal Highway Administration. Center for Accelerating Innovation, 2021, Report no. FHWA-21-CAI-021, ROSA P. https://rosap.ntl.bts.gov/view/dot/57059.
2021-08-01
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FHWA Highway History Website Articles
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This article is about the history and legislation that lead to the construction of Cumberland Road also known as National Road.
Weingroff, R. F. (2021). The Nation's First Mega-Project: A Legislative History of the Cumberland Road. United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/68561
Weingroff, Richard F.. The Nation's First Mega-Project: A Legislative History of the Cumberland Road. United States. Department of Transportation. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/68561.
Weingroff, Richard F. The Nation's First Mega-Project: A Legislative History of the Cumberland Road. United States. Department of Transportation. Federal Highway Administration, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/68561.
Experiments on stationary sectional models of scaled replica of bridge stay cables were carried out in a 2-by 3-m wind tunnel. The cross-sectional shapes of the cable models were obtained from direct measurements of stay cables for bridges in service. The purpose of the experiments was to establish a relationship between the level of eccentricity a
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Christiansen, H., & Larose, G. L. (2021). Wind-Tunnel Investigations of the Aerodynamics of Bridge Stay Cable Cross-Sectional Shapes (Report No. FHWA-HRT-21-074). United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development. https://rosap.ntl.bts.gov/view/dot/57316
Christiansen, Heidi and Guy L. Larose. Wind-Tunnel Investigations of the Aerodynamics of Bridge Stay Cable Cross-Sectional Shapes. Report no. FHWA-HRT-21-074. United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development, 2021. https://rosap.ntl.bts.gov/view/dot/57316.
Christiansen, Heidi, and Guy L. Larose Wind-Tunnel Investigations of the Aerodynamics of Bridge Stay Cable Cross-Sectional Shapes. United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development, 2021, Report no. FHWA-HRT-21-074, ROSA P. https://rosap.ntl.bts.gov/view/dot/57316.
Concrete on concrete–unbonded (COC–U) overlays leverage the investment already made in the existing pavement structure while eliminating the need for extensive preservation activities. This case study summarizes the design, construction, and performance of a COC–U overlay of an existing jointed concrete pavement.
Tayabji, S. D. (2021). Concrete Overlay: Alabama I-59: Concrete on Concrete–Unbonded [case study] (Report No. FHWA-HIF-21-045). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/62667
Tayabji, Shiraz D.. Concrete Overlay: Alabama I-59: Concrete on Concrete–Unbonded [case study]. Report no. FHWA-HIF-21-045. United States. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/62667.
Tayabji, Shiraz D. Concrete Overlay: Alabama I-59: Concrete on Concrete–Unbonded [case study]. United States. Federal Highway Administration, 2021, Report no. FHWA-HIF-21-045, ROSA P. https://rosap.ntl.bts.gov/view/dot/62667.
2021-08-01
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FHWA Highway History Website Articles
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This is the introduction of a cross-country trip made by John W. Cross' family from New Jersey to National Parks in the West coast.
Cross, J. W. (2021). Driving Out West in 1940: Introduction. United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/68554
Cross, John W.. Driving Out West in 1940: Introduction. United States. Department of Transportation. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/68554.
Cross, John W. Driving Out West in 1940: Introduction. United States. Department of Transportation. Federal Highway Administration, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/68554.
2021-08-01
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FHWA Highway History Website Articles
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Bibliography of U.S. Route 66
Weingroff, R. F. (2021). Highway History Bibliography: U.S. Route 66. United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/68568
Weingroff, Richard F.. Highway History Bibliography: U.S. Route 66. United States. Department of Transportation. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/68568.
Weingroff, Richard F. Highway History Bibliography: U.S. Route 66. United States. Department of Transportation. Federal Highway Administration, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/68568.
2021-08-01
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FHWA Highway History Website Articles
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Transcription of the diary of Margaret Helene Goodman of her road trip from New Jersey to National Parks in the west coast of the U.S.
Cross, J. W. (2021). Driving Out West in 1940: Diary of Margaret Helene Goodman. United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/68557
Cross, John W.. Driving Out West in 1940: Diary of Margaret Helene Goodman. United States. Department of Transportation. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/68557.
Cross, John W. Driving Out West in 1940: Diary of Margaret Helene Goodman. United States. Department of Transportation. Federal Highway Administration, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/68557.
This evaluation assesses how the Federal Highway Administration's (FHWA's) investment in research on high friction surface treatments (HFSTs) and related activities impact the availability and quality of such research; awareness, knowledge, and attitudes toward HFSTs in the United States; adoption of HFSTs as a safety measure; and safety performanc
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Coppinger, K., Keen, M., Gissel, J., & Rainville, L. (2021). FHWA Research and Technology Evaluation: High Friction Surface Treatments (Report No. FHWA-HRT-21-014). United States. Federal Highway Administration. Office of Corporate Research, Technology, and Innovation Management. https://rosap.ntl.bts.gov/view/dot/57317
Coppinger, Kaitlin, Matthew Keen, Jennifer Gissel, and Lydia Rainville. FHWA Research and Technology Evaluation: High Friction Surface Treatments. Report no. FHWA-HRT-21-014. United States. Federal Highway Administration. Office of Corporate Research, Technology, and Innovation Management, 2021. https://rosap.ntl.bts.gov/view/dot/57317.
Coppinger, Kaitlin, et al. FHWA Research and Technology Evaluation: High Friction Surface Treatments. United States. Federal Highway Administration. Office of Corporate Research, Technology, and Innovation Management, 2021, Report no. FHWA-HRT-21-014, ROSA P. https://rosap.ntl.bts.gov/view/dot/57317.
United States. Federal Highway Administration. Office of Bridge Technology
2021-08-01
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This Technical Brief provides an overview of “Advancing Steel and Concrete Bridge Technology to Improve Infrastructure Performance Program.” The objective was to research design details of Electrically Isolated Tendon (EIT) technology for post-tensioning systems in concrete bridges to accommodate epoxy-coated mild steel reinforcement and permit pos
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United States. Federal Highway Administration. Office of Bridge Technology (2021). Development of Reference Criteria for Electrically Isolated Post-Tensioning Tendons in U.S. Bridge Applications [tech brief] (Report No. FHWA-HIF-20-042). United States. Federal Highway Administration. Office of Bridge Technology. https://rosap.ntl.bts.gov/view/dot/62736
United States. Federal Highway Administration. Office of Bridge Technology. Development of Reference Criteria for Electrically Isolated Post-Tensioning Tendons in U.S. Bridge Applications [tech brief]. Report no. FHWA-HIF-20-042. United States. Federal Highway Administration. Office of Bridge Technology, 2021. https://rosap.ntl.bts.gov/view/dot/62736.
United States. Federal Highway Administration. Office of Bridge Technology Development of Reference Criteria for Electrically Isolated Post-Tensioning Tendons in U.S. Bridge Applications [tech brief]. United States. Federal Highway Administration. Office of Bridge Technology, 2021, Report no. FHWA-HIF-20-042, ROSA P. https://rosap.ntl.bts.gov/view/dot/62736.
United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements
2021-08-01
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This Technical Brief shares summary information related to practices and suggestions implemented by States and local agencies based on the literature and on-site visits in six States. The full report on the site visits is available as a reference should additional information be needed for any of the topics discussed.
United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements (2021). Practices and Lessons Learned When Using Reclaimed Asphalt Shingles in Asphalt Mixtures [tech brief] (Report No. FHWA-HIF-22-001). United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements. https://rosap.ntl.bts.gov/view/dot/58572
United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements. Practices and Lessons Learned When Using Reclaimed Asphalt Shingles in Asphalt Mixtures [tech brief]. Report no. FHWA-HIF-22-001. United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements, 2021. https://rosap.ntl.bts.gov/view/dot/58572.
United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements Practices and Lessons Learned When Using Reclaimed Asphalt Shingles in Asphalt Mixtures [tech brief]. United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements, 2021, Report no. FHWA-HIF-22-001, ROSA P. https://rosap.ntl.bts.gov/view/dot/58572.
United States. Federal Highway Administration. Office of Natural Environment
2021-08-01
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This brief newsletter each month keeps transportation stakeholders up-to-date on various issues related to transportation and climate change.
United States. Federal Highway Administration. Office of Natural Environment (2021). Air Quality and Sustainable Transportation Highlights: July/August 2021 (Report No. FHWA-HEP-21-046). United States. Department of Transportation. Federal Highway Administration. Office of Natural Environment. https://rosap.ntl.bts.gov/view/dot/58568
United States. Federal Highway Administration. Office of Natural Environment. Air Quality and Sustainable Transportation Highlights: July/August 2021. Report no. FHWA-HEP-21-046. United States. Department of Transportation. Federal Highway Administration. Office of Natural Environment, 2021. https://rosap.ntl.bts.gov/view/dot/58568.
United States. Federal Highway Administration. Office of Natural Environment Air Quality and Sustainable Transportation Highlights: July/August 2021. United States. Department of Transportation. Federal Highway Administration. Office of Natural Environment, 2021, Report no. FHWA-HEP-21-046, ROSA P. https://rosap.ntl.bts.gov/view/dot/58568.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-07-30
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The Weekly Gasoline Product Supplied Report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Adminis
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2021). Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 44, Data Complete Through 7/30/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/57258
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 44, Data Complete Through 7/30/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/57258.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 44, Data Complete Through 7/30/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/57258.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-07-25
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The Weekly Traffic Volume Report estimates the vehicle miles traveled (VMT) for interstate highways and how the total travel measured by VMT compares with travel that occurred in the same week of the previous year. The VMT is further split into passenger vehicle and truck components. The information gives new insights into the effect on traffic by
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2021). Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 29, 7/19/2021 - 7/25/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/56940
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 29, 7/19/2021 - 7/25/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/56940.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 29, 7/19/2021 - 7/25/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/56940.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-07-23
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The Weekly Gasoline Product Supplied Report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Adminis
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2021). Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 43, Data Complete Through 7/23/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/56948
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 43, Data Complete Through 7/23/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/56948.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 43, Data Complete Through 7/23/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/56948.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-07-18
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The Weekly Traffic Volume Report estimates the vehicle miles traveled (VMT) for interstate highways and how the total travel measured by VMT compares with travel that occurred in the same week of the previous year. The VMT is further split into passenger vehicle and truck components. The information gives new insights into the effect on traffic by
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2021). Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 28, 7/12/2021 - 7/18/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/56939
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 28, 7/12/2021 - 7/18/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/56939.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 28, 7/12/2021 - 7/18/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/56939.
This project aims to address the need for riders who use demand-responsive services, rural riders, and riders with disabilities to have equal access to the real-time trip planning technologies already available for fixed-route transit, as well as Transportation Network Companies. Fixed-route transit rider information has developed quickly in the la
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Craig, T., Shippy, W., & Bailey, T. (2021). Phase 1 Concept of Operations (ConOps) – California Association for Coordinated Transportation ITS4US Deployment Project (Report No. FHWA-JPO-21-858). United States. Department of Transportation. Federal Highway Administration. https://doi.org/10.21949/1527521
Craig, Thomas, Weston Shippy, and Taylor Bailey. Phase 1 Concept of Operations (ConOps) – California Association for Coordinated Transportation ITS4US Deployment Project. Report no. FHWA-JPO-21-858. United States. Department of Transportation. Federal Highway Administration, 2021. https://doi.org/10.21949/1527521.
Craig, Thomas, et al. Phase 1 Concept of Operations (ConOps) – California Association for Coordinated Transportation ITS4US Deployment Project. United States. Department of Transportation. Federal Highway Administration, 2021, Report no. FHWA-JPO-21-858, ROSA P. https://doi.org/10.21949/1527521.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-07-16
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The Weekly Gasoline Product Supplied Report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Adminis
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2021). Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 42, Data Complete Through 7/16/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/56946
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 42, Data Complete Through 7/16/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/56946.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 42, Data Complete Through 7/16/2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/56946.
This document describes the Performance Measurement and Evaluation Support Plan for the New York City Department of Transportation New York City (NYC) Connected Vehicle Pilot Deployment (CVPD) Project. The report documents the performance metrics that will be used to assess the success of the NYC CVPD project, the targets for improvement in those p
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Galgano, S., Talas, M., Opie, K., Marsico, M., Weeks, A., Wang, Y., Benevelli, D., Rausch, R., Ozbay, K., & Muthuswamy, S. (2021). Connected Vehicle Pilot Deployment Program Phase 1: Performance Measurement and Evaluation Support Plan: New York City: Final Report (Report No. FHWA-JPO-16-302). United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office. https://rosap.ntl.bts.gov/view/dot/31727
Galgano, Steve, Mohamad Talas, Keir Opie, Michael Marsico, Andrew Weeks, Yixin Wang, David Benevelli, Robert Rausch, Kaan Ozbay, and Satya Muthuswamy. Connected Vehicle Pilot Deployment Program Phase 1: Performance Measurement and Evaluation Support Plan: New York City: Final Report. Report no. FHWA-JPO-16-302. United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office, 2021. https://rosap.ntl.bts.gov/view/dot/31727.
Galgano, Steve, et al. Connected Vehicle Pilot Deployment Program Phase 1: Performance Measurement and Evaluation Support Plan: New York City: Final Report. United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office, 2021, Report no. FHWA-JPO-16-302, ROSA P. https://rosap.ntl.bts.gov/view/dot/31727.
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