Following deployment of the TransGuide freeway management system in San Antonio, Texas, crash frequency was reduced by 41 percent and incident response time decreased by 20 percent.
The first phase of the TransGuide system includes dynamic message signs, lane control signs, loop detectors, video surveillance cameras, and a communication network covering the 26 instrumented miles. Comparing crash statistics for August – December of 1992, 1993, and 1994, with the statistics for August – December 1995, the paper reports that the system reduced primary accidents by 35 percent, reduced secondary accidents by 30 percent, reduced inclement weather accidents by 40 percent, and reduced overall accidents by 41 percent.
Before-and-After Analysis of the San Antonio TransGuide System
Author: Henk, Russel H., et al.
Published By: Paper presented at the 76th Annual Transportation Research Board Meeting. Washington, District of Columbia
Source Date: 12-16 January 1997
Average User Rating
Intelligent Transportation Systems > Traffic Incident Management > Information Dissemination > Dynamic Message Signs
Intelligent Transportation Systems > Traffic Incident Management > Mobilization & Response
Intelligent Transportation Systems > Traffic Incident Management > Surveillance & Detection > Imaging/Video
Typical Deployment Locations
DMS, CMS, VMS, Changeable Message Signs, Variable Message Signs, CCTV, closed circuit television cameras, road monitoring, camera imaging