The Strategic Highway Research Program 2 (SHRP2) Project R05 was conducted from 2008 to 2012 to develop technical information and guidelines that would encourage the rapid and successful application of PC technology to rehabilitate asphalt and concrete pavements. In 2013, the SHRP2 Implementation Assistance Program (IAP) was created to help highway
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Bridge inspectors today are fortunate to have access to emerging technologies that can help gauge the internal condition of a bridge. For example, some tools use sound waves that travel inside a bridge; others use infrared thermography to detect temperature changes inside a structure. But inspectors and civil engineers acknowledge that these techno
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2018-09-01
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At-grade rail-highway crossings that are blocked by slow-moving or stopped trains increase risks to public safety at both rural and urban locations. For example, emergency responders may be prevented from reaching individuals facing life-threatening health crises, pedestrians or children may attempt to cut through idling trains to complete their cr
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This design example, plate girder shear and flexural strengthening, involves the addition of steel strengthening material to an existing steel plate girder. The existing bridge was designed for HS-20 live loading. The girder is to be strengthened due to section loss from corrosion. The design criteria is to strengthen the girder to obtain a HS-20 l
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2018-09-01
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PDF
In California, rail-highway safety is a partnership between the California Public Utilities Commission (CPUC), and Caltrans, the State transportation agency that receives Federal-aid funds, including Section 130 Railway-Highway Crossings Program funding. CPUC prioritizes and selects safety improvement projects under the Section 130 Program by using
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GDOT partnered with the Utah Department of Transportation to leverage their experience deploying ATSPM. GDOT's ATSPM deployment follows the same basic architecture used in Utah and features a public-facing website (https://traffic.dot.ga.gov/ATSPM/) to make data and analysis readily available. Data collected by the ATSPM system allows GDOT to bette
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2018-09-01
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PDF
Intersection Control Evaluation (ICE) is a data-driven, performance-based framework and approach used to objectively screen alternatives and identify an optimal geometric and control solution for an intersection. A growing number of transportation agencies are developing and adopting ICE policies. Although there are differences among these ICE poli
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The guidelines proposed by the NCHRP Report 350 pertaining to the safety of roadway hardware devices necessitated the evaluation of those devices. This study deals with the strength evaluation of precast concrete bridge railing that is a part of the roadway hardware devices. Though many articles, reports, and publications were found regarding the t
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2018-09-01
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On a monthly basis, each State is required to report to the Federal Highway Administration (FHWA), the amount of gallons taxed by that state. This data is analyzed and compiled by FHWA staff. The data on the amount of on-highway fuel use for each State is then used to attribute federal revenue to each State. Yearly, the FHWA, Office of Policy, prov
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United States. Department of Transportation. Federal Highway Administration. Office of Real Estate Services
2018-09-01
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The Federal Highway Administration's (FHWA) Office of Real Estate Services Newsletter is a resource which is intended to provide right-of-way professionals with the latest best practices, research results, training information, and information on policy and regulatory updates to ensure that Federal, State and local right-of-way program delivery is
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This design example, steel truss member strengthening, involves the addition of steel cover plates to steel truss members, one-tension member and one-compression member. The bridge is to be strengthened to meet HL-93 design loading (Existing bridge designed for HS-15 live load). This example is based on AASHTO LRFD Bridge Design Specifications, 7th
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2018-09-01
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PDF
What are the low-cost treatments included in this proven safety countermeasure? They include: Pavement markings; Signing; Visibility and sight distance improvements. These low-cost strategies increase driver awareness and recognition of intersections and potential conflicts. Below are examples of the basic improvement package.
Recognizing tunnels as an increasingly popular solution for significant highway system improvements, this report examines the use of fixed firefighting systems (FFFSs) in tunnels to produce safety improvements, increase long-term resilience, and add functional benefits for tunnels and highway systems. It provides detailed information from site visi
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United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements
2018-09-01
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Overview of current practices and guidance on the design and use of asphalt pavement mixtures that incorporate high levels of reclaimed asphalt binder in the form of reclaimed asphalt pavement (RAP) and/or reclaimed asphalt shingles (RAS).
The Federal Highway Administration (FHWA) is investigating how emerging connected-vehicle (CV) and automated-vehicle (AV) technologies can address roadway-departure (RwD) crashes. The objective of this project was to develop a framework for FHWA regarding how the infrastructure components need to change to accommodate CV and AV technologies to help
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This issue brief documents estimates of the crash reduction that might be expected if a specific countermeasure or group of countermeasures is implemented with respect to pedestrian crashes. The crash reduction estimates are presented as Crash Modification Factors (CMFs). Some of the crash reduction estimates are also presented in terms of left tur
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The purpose of pavement-preservation treatments is to correct surface defects, improve ride quality, improve safety characteristics, and extend pavement life without increasing the structural capacity of the pavement. The application of a thin overlay is expected to extend the life of a pavement by 8–10 yr, although this range may vary depending on
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This report highlights key recommendations and noteworthy practices identified at a Transportation Planning Capacity Building (TPCB) peer exchange co-hosted by the Rhode Island Department of Administration and the Rhode Island Department of Transportation on September 13-14, 2018, in Providence, Rhode Island. This event was sponsored by the TPCB Pe
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2018-09-01
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Public Roads
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Public Roads is the quarterly magazine of the Federal Highway Administration (FHWA). Reading Public Roads is the easiest way to keep up-to-date on developments in federal highway policies, programs, and research and technology. More specifically, the magazine "covers" advances and innovations in highway/traffic research and technology, critical nat
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