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Work Zone Safety Information Clearinghouse

Library of Resources to Improve Roadway Work Zone Safety for All Roadway Users

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Traffic Speed

 

An Artificial Neural Network Speed Profile Model for High-Speed Highway Construction Work Zones

Speed profile models can be used by highway engineers to assess the adequacy of a design. Previous work has investigated relationships between operating speed and geometric roadway elements for … [Read more...] about An Artificial Neural Network Speed Profile Model for High-Speed Highway Construction Work Zones

Speed Variations Are Major Cause of Work Zone Crashes

Rear-end collisions cause the preponderance of work zone crashes in Virginia, indicating that a high variance in vehicle speeds is the major cause of accidents in work zones, according to a … [Read more...] about Speed Variations Are Major Cause of Work Zone Crashes

Speed Change Distribution of Vehicles in a Highway Work Zone

In response to roadway geometry and traffic control devices, motorists may change their speeds within a work zone. Speed profile data for 102 automobiles (cars and vans) and 49 trucks, which traveled … [Read more...] about Speed Change Distribution of Vehicles in a Highway Work Zone

Evaluation of Speed Limits in Kentucky

The objectives of this study were to examine current criteria and procedures used for setting speed limits on public roads and to recommend appropriate speed limits for various types of roadways. The … [Read more...] about Evaluation of Speed Limits in Kentucky

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