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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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).
United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2018-09-01
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This document is a technical summary of the Federal Highway Administration report "Feasibility of Mapping and Marking Underground Utilities by State Transportation Departments" (FHWA-HRT-16-019).
One objective of the Exploratory Advanced Research (EAR) Program within the Federal Highway Administration (FHWA) is to cultivate research projects that demonstrate the potential of new materials that are less reliant on limited natural resources for highway transportation. This research project at Washington State University had that same aim. Res
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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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As steel bridges age, accumulating stress from traffic can cause structural fatigue, weakening of solid components such as girders, and degrading of connections that hold bridge elements together. In 2016, 16 percent of the 178,923 steel bridges in the United States were considered in poor condition, according to the Federal Highway Administration
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In March 2013, the States of Florida, Minnesota, Oregon, and Pennsylvania were selected as lead adopters of the second Strategic Highway Research Program (SHRP2) product Managing Risk in Rapid Renewal Projects (R09). This report evaluates those States’ progress in disseminating R09 concepts to staff, adopting R09 concepts into State procedures, and
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This evaluation of the second Strategic Highway Research Program (SHRP2) Traffic Incident Management (TIM) Responder Training Program focuses on three areas: the dissemination of TIM trainings and concept across the country, responder and agency adoption of SHRP2 TIM concepts, and improvements in key TIM performance metrics. From 2012 to 2015, SHRP
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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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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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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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This example involves the replacement of stringers during re-decking on an existing truss/floorbeam/stringer bridge. The existing stringers are non-composite rolled W24x76 beams, that were designed for HS-20 live loads. The design criteria is to provide new stringers to obtain a HS-25 live load rating factor equal to or greater than 1.0, while mini
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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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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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Model Systems Engineering Documents for Dynamic Message Sign (DMS) Systems is intended to provide guidance for professionals involved in developing systems engineering documents covering the evaluation, selection and implementation of DMS systems.
Automated Traffic Signal Performance Measures (ATSPM) are a cost-effective way for agencies to measure and display signalized intersection performance. ATSPM enables UDOT to proactively manage traffic signal timing and quickly identify maintenance issues that affect traffic flow. UDOT's ATSPM program benefited from its partnership with Purdue Unive
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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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The Pennsylvania Department of Transportation's (PennDOT) automated traffic signal performance measure (ATSPM) program is statewide in scale. PennDOT has implemented ATSPMs where high-resolution controllers and field communications are available.
United States. Federal Highway Administration. Center for Accelerating Innovation
2018-09-01
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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. 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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