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Showing 61 - 80 of 16255 results
  • Geometric Design Laboratory Bridging Safety Design and Innovation for Safer Roads flyer
    Geometric Design Laboratory Bridging Safety, Design, and Innovation for Safer Roads [flyer]
    United States. Department of Transportation. Federal Highway Administration
    2026-01-01 | PDF
    The Federal Highway Administration (FHWA) Geometric Design Laboratory (GDL) is dedicated to supporting transportation safety, design, and innovation through advanced tools, technical reviews, and collaboration with research and implementation teams. GDL's main mission is the advancement of the safety practice. Such advancement can be in the forms o ...
  • V2X Interoperability Help Desk Postcard
    V2X Interoperability Help Desk [Postcard]
    United States. Department of Transportation. Federal Highway Administration
    2026-01-01 | PDF
    The help desk is your direct line to technical experts supporting your V2X deployment. Whether you’re selecting equipment, creating MAP messages, integrating signal phase and timing, or troubleshooting data flow, the help desk is here to help ensure interoperability and compliance with standards.
  • Mechanisms Driving Altitude and Latitude dependent Air Quality Variations from HighAltitude NOx Emissions
    Mechanisms Driving Altitude- and Latitude- dependent Air Quality Variations from High-Altitude NOx Emissions
    Oh, Lucas J. ;
    Eastham, Sebastian D.
    2026-01-01 | PDF
    The environmental impact of nitrogen oxide (NOx) emissions varies with emission altitude and latitude. NOx emissions from subsonic aviation (9-12 km) contribute to net global ozone formation, whereas those from supersonic aircraft (above 14 km) lead to net global ozone depletion. However, the effects of NOx emission altitude on surface air quality ...
  • Special Issue Weekly Motor Fuel Report Gasoline Product Supplied for Fiscal Year Week No 13 Data Complete Through 12262025
    Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 13, Data Complete Through 12/26/2025
    United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
    2025-12-31 | Special Issue - Weekly Motor Fuel Report | PDF
    The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration ...
  • Special Issue Weekly Motor Fuel Report Gasoline Product Supplied for Fiscal Year Week No 12 Data Complete Through 12192025
    Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 12, Data Complete Through 12/19/2025
    United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
    2025-12-29 | Special Issue - Weekly Motor Fuel Report | PDF
    The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration ...
  • Special Issue Weekly Motor Fuel Report Gasoline Product Supplied for Fiscal Year Week No 11 Data Complete Through 12122025
    Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 11, Data Complete Through 12/12/2025
    United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
    2025-12-17 | Special Issue - Weekly Motor Fuel Report | PDF
    The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration ...
  • Special Issue Weekly Motor Fuel Report Gasoline Product Supplied for Fiscal Year Week No 10 Data Complete Through 1252025
    Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 10, Data Complete Through 12/5/2025
    United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
    2025-12-10 | Special Issue - Weekly Motor Fuel Report | PDF
    The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration ...
  • Special Issue Weekly Motor Fuel Report Gasoline Product Supplied for Fiscal Year Week No 9 Data Complete Through 11282025
    Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 9, Data Complete Through 11/28/2025
    United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
    2025-12-03 | Special Issue - Weekly Motor Fuel Report | PDF
    The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration ...
  • Traffic Volume Trends October 2025
    Traffic Volume Trends: October 2025
    United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
    2025-12-01 | 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 ...
  • Macrotexture Model Development for Asphalt Mixtures Aimed at Safety Analysis techbrief
    Macrotexture Model Development for Asphalt Mixtures Aimed at Safety Analysis [techbrief]
    Flintsch, Gerardo ;
    Izeppi, Edgar de León
    2025-12-01 | PDF
    The Safe System Approach, the guiding paradigm of the United States Department of Transportation National Road Safety Strategy, recognizes that system redundancy is crucial to reducing deaths and serious injuries on our Nation’s roads. Where pavements are concerned, this paradigm involves providing adequate levels of friction supply to meet the fri ...
  • Advanced Traffic Signal Control Optimization in a Cooperative Driving Automation Environment fact sheet
    Advanced Traffic Signal Control Optimization in a Cooperative Driving Automation Environment [fact sheet]
    United States. Department of Transportation. Federal Highway Administration
    2025-12-01 | PDF
    Automated vehicles can navigate signalized intersections with enhanced safety and efficiency by establishing communication with smart infrastructure. The functionality developed in this project demonstrates Cooperative Driving Automation’s (CDA's) potential to benefit automated vehicles by supporting them as they navigate signalized intersections w ...
  • Safety Effectiveness of the Rectangular Rapid Flashing Beacon
    Safety Effectiveness of the Rectangular Rapid Flashing Beacon
    United States. Department of Transportation. Federal Highway Administration
    2025-12-01 | PDF
    The Federal Highway Administration conducted a safety evaluation of rectangular rapid flashing beacons (RRFBs), including developing crash modification factors (CMFs) and benefit-to-cost (B/C) ratios. The RRFB includes two rapidly-flashed rectangular-shaped yellow indications, each with a light-emitting diode-array based pulsing light source that f ...
  • Work Zone Management for Light Vehicles Using Cooperative Driving Automation CDA fact sheet
    Work Zone Management for Light Vehicles Using Cooperative Driving Automation (CDA) [fact sheet]
    United States. Department of Transportation. Federal Highway Administration
    2025-12-01 | PDF
    Work zone fatalities have increased 61 percent since 2013. CDA can help decrease these fatalities and support safer automated vehicle (AV) operations with infrastructure-communicating work zone configurations and with restrictions to AVs before they reach the work zone. These strategies increase the AVs' situational awareness and plan their motion. ...
  • Validating a Density Profiling System for Asphalt Compaction Assessment fact sheet
    Validating a Density Profiling System for Asphalt Compaction Assessment [fact sheet]
    United States. Department of Transportation. Federal Highway Administration
    2025-12-01 | PDF
    The DPS is a nondestructive evaluation (NDE) technology designed to assess asphalt compaction. The DPS uses ground-penetrating radar to measure the dielectric constant of a newly constructed asphalt pavement. A dielectric constant measures a material’s ability to store electric energy by separating opposite polarity charges in space. Research has s ...
  • IHSDM Resource List December 2025
    IHSDM Resource List [December 2025]
    United States. Department of Transportation. Federal Highway Administration
    2025-12-01 | PDF
    A product of the Federal Highway Administration's (FHWA) Safety Research and Development (R&D) Program, the Interactive Highway Safety Design Model (IHSDM) is a suite of safety analysis tools designed to evaluate the safety and operational effects of geometric-design decisions on highways. The following resources are available to individuals consid ...
  • Special Issue Weekly Motor Fuel Report Gasoline Product Supplied for Fiscal Year Week No 8 Data Complete Through 11262025
    Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 8, Data Complete Through 11/26/2025
    United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
    2025-11-26 | Special Issue - Weekly Motor Fuel Report | PDF
    The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration ...
  • Special Issue Weekly Motor Fuel Report Gasoline Product Supplied for Fiscal Year Week No 7 Data Complete Through 11142025
    Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 7, Data Complete Through 11/14/2025
    United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
    2025-11-19 | Special Issue - Weekly Motor Fuel Report | PDF
    The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration ...
  • Special Issue Weekly Motor Fuel Report Gasoline Product Supplied for Fiscal Year Week No 6 Data Complete Through 1172025
    Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 6, Data Complete Through 11/7/2025
    United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
    2025-11-13 | Special Issue - Weekly Motor Fuel Report | PDF
    The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration ...
  • FHWA Bridge Preservation Expert Task Group Strategic Plan FY2025FY2030
    FHWA Bridge Preservation Expert Task Group: Strategic Plan FY2025-FY2030
    United States. Department of Transportation. Federal Highway Administration
    2025-11-07 | PDF
    The FHWA Bridge Preservation Expert Task Group Strategic Plan identifies strategic goals, strategies, and actions in the area of highway bridge preservation by working collaboratively with Federal, State, and local agencies, industry, and academia.
  • Special Issue Weekly Motor Fuel Report Gasoline Product Supplied for Fiscal Year Week No 5 Data Complete Through 10312025
    Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 5, Data Complete Through 10/31/2025
    United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
    2025-11-06 | Special Issue - Weekly Motor Fuel Report | PDF
    The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration ...
61 - 80 / 16255