United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
1992-11-01
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Motor vehicle crashes involving buses represent a serious safety problem in the United States that has not been properly recognized or addressed. In 1989, for example, 57,000 buses were involved in accidents, resulting in 15,000 bus occupant injuries and 50 bus occupant fatalities. In addition, these accidents resulted in 205 occupant fatalities in
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A novel Hardware-in-the-loop Simulation tool was constructed to show how modifications to signal timings would improve coordinated corridor performance. A total of 15 unique microsimulation models were developed and run three times each to test three case studies of bi-direction bandwidth optimization, cycle length sensitivity, and leading pedestri
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United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
1994-05-01
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On October 1, 1992, the Federal Highway Administration/National Highway Traffic Safety Administration (FHWA/NHTSA) National Crash Analysis Center (NCAC) was established through a three-way contract between the Federal Highway Administration's Office of Safety and Traffic Operations R&D, the National Highway Traffic Safety Administration's Office of
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United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
1993-09-01
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Research in the Aerodynamics Laboratory involves model testing, numerical modelling, static and dynamic structural analysis, and full scale measurements. A number of staff studies and Grants for Research Fellowship (GRF) student projects are currently underway in each of these areas.
United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
1993-08-01
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Researchers who work in the Pavement Isothermal Test System (PITS) are currently developing mechanistic pavement design procedures. Based on fundamental material properties, these pavement design procedures will allow pavement designers to predict the performance of pavements before construction and help them select better pavement alternatives.
United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
1994-03-01
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The Human Factors Laboratory provides a variety of environments for research pertaining to driver capabilities and limitations. The laboratory is comprised of an instrumented field test vehicle; two reconfigurable laboratories, called SIGNSIM and VIDSIM; and a Graphics Center, which supports the laboratories.
United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
1995-04-01
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The Corrosion Control laboratory at the Turner-Fairbank Highway Research Center has the required equipment and personnel expertise to characterize coatings, and to evaluate their performance and durability by accelerated testing methods. Equipments and skills are also available to use state-of-the-art electrochemical techniques to evaluate the corr
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The meteorological parameters that have the greatest impact on drivers and their safety are rainfall, snow, ice, fog, and wind. To minimize the impact of these conditions, information can be provided to travelers en route or prior to departing, as well as to highway maintenance crews. The rapid response of appropriate measures can potentially save
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United States. Federal Highway Administration. Office of Engineering and Highway Operations R&D
1988-04-01
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The Pavement Performance Laboratory is located at the Federal Highway Administration's (FHWA's) Turner- Fairbank Highway Research Center in McLean, Virginia. The primary functions of this laboratory are to determine mechanical properties of pavement components for mechanistic design procedures, and to evaluate the structural response of prototype p
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United States. Federal Highway Administration. Office of Engineering and Highway Operations R&D
1988-04-01
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The Pavement Testing Facility is an outdoor full-scale pavement testing laboratory located at the Federal Highway Administration's (FHWA's) Turner-Fairbank Highway Research Center in McLean, Virginia. The purpose of the facility is to quantify the performance of full-scale test pavements trafficked with an accelerated rate of heavy axle loadings. F
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
1999-04-01
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Northern Arizona has more than 6 million visitors per year. More than 2 million of these visitors will explore the World Wide Web to learn more about their destination prior to their trip. For this reason, the Federal Highway Administration, in partnership with the Arizona Department of Transportation (DOT), sponsored the development of the AZ Trip
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
1999-04-01
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The city of Branson, Missouri, has a permanent population of around 4,400 and measures approximately 7 mi (11.3 km) along its main thoroughfare, State Highway 76. Branson attracts more than 6 million visitors per year. The congestion on State Highway 76 is severe (Level of Service F) during peak and some off-peak periods. The lack of right-of-way m
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The reports produced and the product of work done on the subject of Permanent Ground Anchor Walls include: (1) a report with four volumes- Summary Report of Research on Permanent Ground Anchor Walls, Volume I: Current Practices and Limiting Equilibrium Analyses, Volume II: Full-Scale Wall Tests and a Soil Structure Interaction Model, Volume III: Mo
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The national Intelligent Transportation Systems (ITS) program includes the development and application of advanced systems upon all parts of the transportation network, including rural areas. The U.S. DOT has developed the Advanced Rural Transportation Systems (ARTS) program to meet the needs of travelers in and through rural areas, as well as the
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The national Intelligent Transportation Systems (ITS) program includes the development and application of advanced systems upon all parts of the transportation network, including rural areas. The U.S. DOT has developed the Advanced Rural Transportation Systems (ARTS) program to meet the needs of travelers in and through rural areas, as well as the
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United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
1997-05-01
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The national Intelligent Transportation Systems (ITS) program includes the development and application of advanced systems upon all parts of the transportation network, including rural areas. The U.S. DOT has developed the Advanced Rural Transportation Systems (ARTS) program to meet the needs of travelers in and through rural areas, as well as the
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United States. Department of Transportation. Federal Highway Administration
1995-04-01
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The Geotechnical Laboratory at the TFHRC includes the soil mechanics, soil behavior, and foundations testing facilities. The primary functions of the laboratory are to determine mechanical properties of ground materials, and to evaluate soil-structure interaction for bridges and retaining walls. In addition the laboratory can perform rock mechanics
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The research team developed and tested a prototype machine learning (ML) framework to automate the identification of asphalt pavement cracking. The framework combines deep learning and image processing, trained using a large dataset of annotated pavement images collected from California roadways. Each image was labeled according to standardized dis
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United States. Department of Transportation. Federal Highway Administration
1988-12-01
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The Human Factors Laboratory (HFL) of the Office of Safety and Traffic Operations R&D, Federal Highway Administration (FHWA), provides a working environment for delineation of drivers' capabilities and limitations. Historically, the facility has been used to conduct applied studies evaluating the potential effectiveness of either new or modified tr
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