Widespread implementation of safety countermeasures supports the Safe System Approach and can accelerate achieving local, State, and National safety goals. This document introduces the Safe System Roadway Design Hierarchy as a tool to characterize engineering and infrastructure-based countermeasures and strategies relative to their alignment with t
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United States. Department of Transportation. Federal Highway Administration
2024-01-01
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This poster highlights the 2024 Recipient of the Transportation Pooled Fund (TPF) Excellence Award - the Indiana Department of Transportation (INDOT) and its efforts in accomplishing this honor. As a result of extensive collaboration and research, this TPF study created two new American Association of State Highway and Transportation Officials (AAS
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United States. Department of Transportation. Federal Highway Administration
2024-01-01
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This poster highlights the 2024 recipient of the Transportation Pooled Funds (TPF) Excellence Award - the Minnesota Department of Transportation (MnDOT). Clear Roads Transportation Pooled Fund (TPF) - beginning nearly 20 years ago, has completed 86 research and synthesis projects in the areas of methods, equipment, materials, training, technology,
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United States. Department of Transportation. Federal Highway Administration
2024-01-01
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This fact sheet provides an overview of the Connected and Automated Vehicle (CAV) Telematics Tool. Developing, testing, and deploying CAV use cases and scenarios requires monitoring systems and rapidly analyzing the data these systems generate. To address this challenge, the U.S. Department of Transportation (USDOT) created the CAV Telematics Tool,
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United States. Department of Transportation. Federal Highway Administration
2024-01-01
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This fact sheet highlights the efforts of the Federal Highway Administration's (FHWA's) leveraging of innovative methods to safely integrate and test new technologies. FHWA has invested in developing secure, mixed-reality, distributed testing capabilities to facilitate development of a safer, more efficient, and more equitable transportation system
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United States. Department of Transportation. Federal Highway Administration
2024-01-01
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This fact sheet highlights CDASim, an open-source Cosimulation Tool to Support Cooperative Driving Automation (CDA) Research. This tool focuses on advancing research to enable seamless integration between infrastructure, connected and automated vehicles, and other road users. In addition, the program aims to enhance transportation system safety and
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United States. Department of Transportation. Federal Highway Administration
2024-01-01
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This study outlines a possible stochastic methodology for identifying bridges with greater probability of failure from vehicular collisions. This methodology will account for the stochastic nature of the following variables: Speed and weight of trucks. Frequency of heavy truck collisions at a given bridge location and its direct impact on bridge sa
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United States. Department of Transportation. Federal Highway Administration
2024-01-01
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Residue from the re-refining of waste engine oils, referred to as re-refined engine oil bottoms (REOB) or vacuum tower asphalt extender, has been used as a fluxing agent in asphalt binder blending for more than 40 years. This practice, called "fluxing," involves blending softer oils, or "fluxes" with a harder asphalt binder to produce intermediate
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United States. Department of Transportation. Federal Highway Administration
2024-01-01
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Polyphosphoric acid (PPA) is a non-asphaltic reactive oligomer or short chained polymer that has been used in asphalt binder formulations for more than 70 years. PPA can be used alone or in conjunction with polymer modification to provide improved performance of asphalt binders and asphalt mixtures.
United States. Federal Highway Administration. Office of Safety and Operations Research and Development
2024-01-01
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This fact sheet provides an overview of the test case that proves the benefits of CDA application in stop-controlled intersections. While the research team identified some limitations through data collection and analysis, the results raised no safety concerns and the potential for future work remains high. In particular, the developed framework can
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United States. Federal Highway Administration. Office of Safety and Operations Research and Development
2024-01-01
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This test case proved the benefits of CDA application in signalized intersections with adaptive settings and helped provide a better understanding of its advantages. Potential for future work remains high. In particular, the developed framework can be significantly improved by completing further research in the following areas: Large Scale Testing,
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United States. Federal Highway Administration. Office of Safety and Operations Research and Development
2024-01-01
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This fact sheet shows the practicality of Cooperative Driving Automation (CDA) -enabled vehicles receiving notifications about alterations due to temporary traffic control in the presence of a work zone can enable the vehicles to navigate through the work area safely and precisely. Future research could potentially focus on the following areas: Tes
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United States. Federal Highway Administration. Office of Safety and Operations Research and Development
2024-01-01
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This fact sheet provides information regarding how pedestrian and bicyclist fatalities make up about 19 percent of all traffic fatalities in the United States. Both drivers and automated vehicles often have blind spots or limited sight lines where they cannot see vulnerable road users on the road. These visual limitations potentially contribute to
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United States. Federal Highway Administration. Office of Safety and Operations Research and Development
2024-01-01
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This fact sheet overviews the research laboratory tools that Saxton Transportation Operations Laboratory (STOL) uses to enhance connected and automated vehicle capabilities. The U.S. Department of Transportation (USDOT) provides infrastructure-focused tools that offer numerous advantages to transportation systems and their users. These tools help o
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United States. Federal Highway Administration. Office of Safety and Operations Research and Development
2024-01-01
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This fact sheet provides information on the Cooperative Driving Automation (CDA) tools that Saxton Transportation Operations Laboratory (STOL) used to improve road user safety. The suite of tools includes CARMA PlatformSM, CARMA MessengerSM, and CARMASM, 1Tenth, which aid in conducting research and testing of CDA technology.(4) Two of the tools wit
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United States. Federal Highway Administration. Office of Safety and Operations Research and Development
2024-01-01
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This fact sheet provides information regarding move over laws that prove that documented benefits could be achieved through the application of Cooperative Driving Automation (CDA) traffic incident management scenarios and helped provide a better understanding of its advantages. Through data collection and analysis, the research team outlined some s
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United States. Department of Transportation. Federal Highway Administration
2024-01-01
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This postcard gives an overview of the CARMA suite of 5 products that includes: CARMA Cloud, CARMA Platform, CARMA Streets, CARMA Messenger, CARMA Simulation.
United States. Department of Transportation. Federal Highway Administration
2024-01-01
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This postcard displays a diagram of the process of how Cooperative Driving Automation (CDA) support collaborates with other entities to provide its services. CDA Support Services assist stakeholders by supplying them with helpful information and technical expertise related to the suite of CDA research tools. The CDA Support Services team provides a
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