Evaluation of the Safety Effects of the I-77 Active Traffic and Safety Management System

Project No: 106414

Target Completion Date: September 15, 2016 Safety, Operations, and Traffic Engineering

About the project:

The Virginia Department of Transportation expects to activate an active traffic and safety management system in mid-2015 on approximately 12 miles of Interstate 77 north from the Virginia-North Carolina state line. The system will contain variable speed limits, which change the posted speed based on current weather conditions, including fog, high winds, snow and ice.

This location is prone to severe fog. Several large multi-vehicle crashes have occurred on this section of interstate during fog due to drivers traveling too fast for existing weather conditions.

The project will evaluate the effectiveness of I-77 system. The research team will examine its impact on crashes, mean speed, speed variance and speed compliance. The scientists also will monitor the impacts of the system during varying severities of weather events and will assess its effectiveness at different locations along the corridor.

Project Team

Principal Investigators

Other Investigators

  • Katie McCann

Last updated: July 5, 2023

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