Texas Department of Transportation (TxDOT) research project 0-4421 "A Simplified Approach for Selecting Optimal Traffic Responsive Control Parameters" developed a novel scientific and computationally based procedure and guidelines for operating coordinated systems with traffic responsive plan selection (TRPS) mode. Since its development in the 1970
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In 2003, there were 38 metal truss bridges 50 years of age or older remaining on the State of Texas highway system. Of these 38 bridges, 33 are listed in the National Register of Historic Places. Many of these bridges do not meet current design criteria for rehabilitation due to narrow deck widths, low vertical clearance, and substandard load capac
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Elastomeric bearing pads of five different materials with shape factors ranging from one to six were subjected to a series of three specific tests to determine and compare their respective load-deformation characteristics. Compression-deflection tests were conducted to determine short time load-deflection responses for solid pads and laminated pads
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Regular inspection of transportation assets is essential to ensure pavement markings and pavements remain in good, clean, and safe condition. Our previous MPC-funded project (Report No. MPC-668) demonstrated the strong potential of using artificial intelligence (AI) and mobile phone imagery to identify various transportation assets. However, that i
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The federally endangered rusty patched bumblebee (Bombus affinis) provides a difficult set of challenges for management and conservation. Bumblebee species have complex life histories, interacting with different obligatory habitat requirements across the ontogeny of the colony. Transportation corridors present unique opportunities for interventions
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The Federal Radionavigation Plan (FRP) has been jointly developed by the U.S. Department of Defense and the U.S. Department of Transportation to ensure efficient use of resources and full protection of National interests. The plan sets forth the Federal interagency approach to the implementation and operation of radionavigation systems. The Federal
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Citizens request the installation of roadway lighting in their communities based on several motivations, including the experience or perception that lighting improves traffic safety and reduces crime, while also providing a tangible benefit of taxpayer dollars at work. Roadway authority staff fully appreciate these citizen concerns; however, roadwa
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This project tested whether limited non-destructive evaluation (NDE) data can be used to predict bridge deck deterioration more effectively. NDE tests, such as Impact Echo, provide objective measurements of deck damage, but they are costly and not collected regularly. Using bridge data from the Federal Highway Administration’s Long-Term Bridge Perf
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Amidst a growing traffic safety crisis in the United States, police enforcement remains a central, yet under-studied, strategy for improving safety outcomes. A significant barrier to research on police traffic enforcement has been the lack of a detailed and comprehensive database. California’s Racial and Identity Profiling Act (RIPA) confidential d
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The goal of the project summarized in this report was to research and develop criteria for updating and improving the ADOT Bridge Design Guidelines with respect to the strut-and-tie methodology defined in the AASHTO LRFD Bridge Design Specifications. To accomplish this goal, the existing literature was reviewed and bridge engineers in Arizona and a
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Several new truss bridges are planned throughout the state. Currently, the bridge railing proposed for these structures consists of a standard Texas Department of Transportation (TxDOT) railing, the T101, which is supported by a cast-in-place concrete deck. TxDOT would prefer to have the option to support a bridge rail system from the truss members
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John A. Volpe National Transportation Systems Center (U.S.)
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1980-07-01
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Federal Radionavigation Plan
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PDF
The Federal Radionavigation Plan (FRP) has been jointly developed by the U.S. Departments of Defense and Transportation to ensure efficient use of resources and full protection of National interests. The plan sets forth the Federal interagency approach to the implementation and operation of radionavigation systems. Volume IV is a summary of the Fed
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The Experimental Products Evaluation Program (EPEP) is an ongoing program established the Office of Research to provide The Oklahoma Department of Transportation (ODOT) with a means of evaluating, monitoring, and implementing the use of new experiments.
Use of high-performance concrete has tremendous potential for improving economy and long-term durability of structures. The State of Oklahoma has an abundance of high-quality aggregates that are necessary for the production of high strength/high performance.
A comprehensive study involving laboratory testing of resilient moduli (MR) of aggregate materials, determination of layer coefficients, and their application in AASHTO flexible pavement design was conducted.
This publication consists of a listing of experimental products that are being or have been evaluated by the Oklahoma Department of Transportation (ODOT) or other transportation agencies.
The Oklahoma Department of Transportation (ODOT) recently completed a project that included a Strengthened Earth Wall. The Mechanically Stabilized Earth (MSE) wall was constructed by Muskogee Bridge Company as a part of project IM-NHIY-44-2(349)231 on I-4.
This publication consists of a listing of experimental products that are being or have been evaluated by The Oklahoma Department of Transportation (ODOT), or other transportation agencies.
Rapid Implementation of new technologies is an important component of an efficiently managed transportation system. The Experimental Products Evaluation Program (EPEP) is an ongoing program established by The Research and Development Division.
United States. Department of Transportation. Bureau of Transportation Statistics. Office of Spatial Analysis and Visualization
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2021-01-01
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National Transportation Atlas Database (NTAD)
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ZIP
The Census TIGERLine Roads 2021-Present dataset is from the United States Census Bureau (USCB), and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics’ (BTS's) National Transportation Atlas Database (NTAD). The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and
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United States Department of Transportation
Chaudhary, Nadeem A