2021-11-01
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FHWA Highway History Website Articles
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Until the 1960s, efforts to make highways safer had focused on two of the three keys in highway crashes: the road and the driver. The third element was the motor vehicle. For decades, the auto industry had supported efforts to make roads safer and drivers more skilled, while making vehicles bigger, more powerful, and faster. With a product to sell,
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Unbonded precast concrete overlays leverage the investment already made in the existing pavement structure while potentially reducing the need for significant preservation activities and reducing lane closure durations. This case study summarizes the design, construction, and performance of an unbonded precast concrete overlay of an existing jointe
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Continuously reinforced concrete (CRC) overlays leverage the investment already made in the existing pavement structure while potentially reducing the need for significant preservation activities and reducing lane closure durations. This case study summarizes the design, construction, and performance of an unbonded CRC overlay of an existing jointe
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Transportation is undergoing a period of significant change in the United States, evident by changes in transportation demand. Many factors influence transportation demand and in different ways. Some trends increase demand; some decrease demand; and others shift demand across modes, time of day, and geographies. Technological advances, coupled with
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This report summarizes the Freeway Management Survey findings of the 2020 Intelligent Transportation Systems (ITS) Deployment Tracking Surveys (DTS). Since 1997, the ITS Joint Program Office (JPO) has used the DTS on an ongoing basis to collect information about ITS deployment in metropolitan areas across the United States by surveying state and lo
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This report summarizes the Arterial Management Survey findings of the 2020 Intelligent Transportation Systems (ITS) Deployment Tracking Surveys (DTS). Since 1997, the ITS Joint Program Office (JPO) has used the DTS on an ongoing basis to collect information about ITS deployment in metropolitan areas across the United States by surveying state and l
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This document is a summary report of the Long-Term Bridge Performance (LTBP) Program’s data collection workshop held from February 25, 2021, through March 18, 2021.
This Ancillary Structures Inspection Reference Manual addresses inspection and maintenance issues related to a wide range of ancillary highway structures, with a focus on steel and aluminum structures. It provides inspection, maintenance and management personnel with the basic information they may need to manage and implement an ancillary structure
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This document summarizes how the United States Bureau of Reclamation (Reclamation) Sedimentation and River Hydraulics – Two Dimension (SRH-2D) software performed in the two-dimensional (2D) modeling benchmark tests developed by the United Kingdom's (UK) Joint Defra (Department for Environmental Food and Rural Affairs) Environment Agency. These test
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The ISTD is an advanced system designed by the hydraulics research team at the Turner-Fairbank Highway Research Center to measure the erosion resistance of fine-grained, cohesive soils directly in the field. It features an innovative erosion head that, when inserted into a standard drill casing, can direct a horizontal radial water flow across the
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-10-31
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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
2021-10-29
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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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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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The Atlanta Regional Commission Complete Trip - ITS4US Deployment project, Safe Trips in a Connected Transportation Network (ST-CTN), is leveraging innovative solutions, existing deployments, and collaboration to make a positive impact using transportation technology to support safety, mobility, sustainability, and accessibility. The ST-CTN concept
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The Atlanta Regional Commission Complete Trip - ITS4US Deployment project, Safe Trips in a Connected Transportation Network (ST-CTN), is leveraging innovative solutions, existing deployments, and collaboration to make a positive impact using transportation technology to support safety, mobility, sustainability, and accessibility. The ST-CTN concept
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This document presents the System Requirements Specification (SyRS) for the University of Washington (UW) ITS4US Deployment Project, The Transportation Data Equity Initiative (TDEI), which is being performed as part of the U.S. Department of Transportation’s (USDOT) Complete Trip—ITS4US Deployment Program. This deployment project aims to develop an
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The California Association for Coordinated Transportation (CALACT) ITS4US project aims to address the need for riders who use demand-responsive services, rural riders, and riders with disabilities to have equal access to real-time trip planning technologies already available for fixed-route transit and by Transportation Network Companies. The Syste
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This document discusses the System Requirements Specification (SyRS) for the University of Washington (UW) ITS4US Deployment Project, which is developing and deploying the Transportation Data Equity Initiative (TDEI). This project currently is in Phase 1, planning and systems engineering development, in which the preliminary idea is developed into
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-10-24
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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
2021-10-22
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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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