As a part of the HfL initiative, the FHWA provided a $1 million grant to the Pennsylvania Department of Transportation (PennDOT) to rehabilitate a 3.815-mile-long section of SR 3011 in Lackawanna County. The overall intent of the project is to demonstrate and encourage PennDOT district representatives and construction industry leaders to implement
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As a part of the HfL initiative, the FHWA provided a waiver to the State match requirement to the Rhode Island Department of Transportation (RIDOT) to replace Bridge No. 475, East Shore Expressway over Warren Avenue, East Providence. The project’s innovative aspects include the use of a self-propelled modular transporter (SPMT), which is a computer
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As a part of the HfL initiative, the FHWA provided a $95,000 grant to the Puerto Rico Highway and Transportation Authority (PRHTA) to replace Bridge No. 1828 on Puerto Rico Highway 140 (PR-140) in Barceloneta Municipality. The innovation employed on this project is the use of a geosynthetic reinforced soil-integrated bridge system (GRS-IBS) for the
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As a part of the HfL initiative, the FHWA provided a $1,900,000 grant to the Vermont Agency of Transportation for the Stockbridge-Bethel roadway reclamation project. The Stockbridge-Bethel project involved reclaiming the roadway that spanned 9.7 miles over VT RT-107 from the new through-truss bridge in the town of Bethel to Stockbridge, where RT-10
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2015-08-01
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This TechBrief provides an overview of the methodology and procedures used to backcalculate the elastic layer modulus from deflection basins for all test sections included in the Long-Term Pavement Performance (LTPP) database.
Climate change can and is producing a wide array of impacts that affect infrastructure on a broad scale. An infrastructure asset's vulnerability to climate change is highly context sensitive, with its location and the adaptive capacity of local businesses, governments, and communities all being influential (EC 2013). Much has been written generally
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United States. Federal Highway Administration. Office of Research, Development, and Technology
2015-08-01
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Access management is the process that provides (or manages) access to land development while simultaneously preserving the flow of traffic on the surrounding road network for safety, capacity, and speed. Access management provides important benefits to the transportation system. These benefits have been increasingly recognized at all levels of gove
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The SHRP 2 NDS involved almost 3,000 volunteers going about their regular activities with extensive instrumentation, including video and still cameras, a Global Positioning System, and many other sensors attached to their personal vehicles for up to 2 years. The NDS data will provide unparalleled insight into the connections between driver behavior
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Successes in Stewardship is a Federal Highway Administration (FHWA) bimonthly newsletter highlighting current best practices in stewardship and environmental review from around the country.
The second Strategic Highway Research Program (SHRP 2) Safety research area has produced unprecedented data for highway researchers in the form of the naturalistic driving study (NDS). With approximately 2 petabytes of data available to researchers, most of which is video data, new automated tools for data extraction and analysis are required. Deve
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In March 2013, the construction contractor for the new self-anchored suspension bridge between San Francisco and Oakland, California, tensioned the threaded rods between the bearings/shear keys and the concrete pier cap. Within days of completion, it was discovered that one-third of the rods for the two shear keys on Pier E2 had fractured. An inves
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Cameras are used prolifically to monitor transportation incidents, infrastructure, and congestion. Traditional camera systems often require human monitoring and only offer low-resolution video. Researchers for the Exploratory Advanced Research (EAR) Program project, "Cooperating Camera Platforms for Ultra-High-Resolution Traffic Surveillance and Au
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United States. Federal Highway Administration. Exploratory Advanced Research Program
2015-08-01
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The topic of this literature review is identification of published literature between 2006 and the present, focusing on (1) the use of dynamic ridesharing and (2) behavioral economics to encourage participation in dynamic ridesharing and to make modest personal adjustments that improve the functioning of a dynamic ridesharing system. The use of tec
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Access management is the process that provides (or manages) access to land development while simultaneously preserving the flow of traffic on the surrounding road network for safety, capacity, and speed. Access management provides important benefits to the transportation system. These benefits have been increasingly recognized at all levels of gove
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2015-08-01
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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
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2015-08-01
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The systemic approach to safety involves improvements that are widely implemented based on high-risk roadway features correlated with particular severe crash types. As the figure on the right illustrates, 57 percent of fatal crashes occur on rural roads, which are often part of the local system. Because these crashes are not evenly distributed acro
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The study evaluates the potential network-wide impacts of the Multi-Modal Intelligent Transportation Signal System(MMITSS) based on a field data analysis utilizing data collected from a MMITSS prototype and a simulation analysis.The Intelligent Traffic Signal System (I-SIG), Transit Signal Priority (TSP), Freight Signal Priority (FSP), and thecombi
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Automated vehicles have the potential to bring about transformative safety, mobility, energy, and environmental benefits to the surface transportationsystem. They are also being introduced into a complex transportation system, where second-order impacts, such as the possibility of increasedvehicle-miles traveled, are of significant concern. Given t
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This document presents the final report on the national evaluation of the Los Angeles Congestion Reduction Demonstration (LACRD) ExpressLanes Program under the United States Department of Transportation (U.S. DOT) CRD Program. The LA CRDprojects focus on reducing congestion by employing strategies consisting of combinations of Tolling, Transit, Tel
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