United States Department of Transportation
i
Curve Advisory Speed and Curve Safety Assessment Practices: Training Development and Support
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2021-06-01
[PDF-3.07 MB]
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Edition:Final Report
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Abstract:The Texas Department of Transportation’s (TxDOT’s) engineering study methods for setting curve advisory speeds were recently updated to extend the guidance to more types of rural highways (e.g., four-lane highways and freeways). Additionally, the software suite used to implement the Global Positioning System (GPS)-based engineering study method for setting advisory speeds was updated to accommodate four-lane rural highways and add technical capabilities, such as the ability to process multiple curves with a single data collection run and to add the capability to measure vertical grade. These resources facilitate the goal to check and update Texas’s curve advisory speeds. The researchers developed training workshop and webinar materials to assist TxDOT practitioners in their application of these new resources. The researchers presented these workshops and the webinar to TxDOT practitioners who are responsible for traffic operations and for signing and marking rural highways. The researchers also provided technical support and guidance for the software suite, which consists of the executable Texas Roadway Analysis and Measurement Software (TRAMS) program and the spreadsheet based Texas Curve Evaluation Suite (TCES) program.
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