Variable speed limit (VSL) systems utilize information on traffic speed, occupancy, and volume detection, weather, and road surface conditions to determine the appropriate speeds at which drivers … [Read more...] about Synthesis of Variable Speed Limit Signs
Best Practices
A Guide for Work Zone Crash Data Collection, Reporting, and Analysis
This guide describes the work zone crash data collection and reporting process, as well as the benefits and challenges in developing a unified system across the states. The quality and consistency of … [Read more...] about A Guide for Work Zone Crash Data Collection, Reporting, and Analysis
Review of Literature and Practices for Incident Management Programs
The project team examined project evaluations, best practice summaries, and synthesis documents, and derived a summary of key elements of programs to speed the time to find and clear stalled vehicles … [Read more...] about Review of Literature and Practices for Incident Management Programs
Traffic Incident Management Quick Clearance Guidance and Implications
Improving traffic incident management is one means to help reduce congestion, as traffic incidents account for approximately 25 percent of total congestion on U.S. highways. Between July and September … [Read more...] about Traffic Incident Management Quick Clearance Guidance and Implications
A Report on Questionnaire Survey on Highway Work Zone Safety Audits
This report documents the findings of a questionnaire survey conducted in mid-July 2007 to collect pertinent information to help the research team prepare and refine strategies and methodologies for … [Read more...] about A Report on Questionnaire Survey on Highway Work Zone Safety Audits
Safe Practices for Law Enforcement Personnel Operating in Highway Work Zones
This guideline highlights safe practices for law enforcement personnel operating in work zones. It lists and compares common practices, such as presence versus enforcement, and also includes … [Read more...] about Safe Practices for Law Enforcement Personnel Operating in Highway Work Zones