Driver confidence in traveler information improved after implementation of the TransGuide freeway management system in San Antonio, Texas.

12-16 January 1997
San Antonio,Texas,United States

Summary Information

The first phase of the San Antonio TransGuide System became operational on July 26, 1995 and included 26 miles of downtown freeway. This paper documents the impact of the system on crashes and incident response times during the first five months of operation and reports the findings of a survey investigation into driver response to the TransGuide system.


Survey results reported in the paper indicate improvements in driver confidence with the traveler information available to them after the implementation of TransGuide. Periodic surveys taken after implementation indicated that driver response to posted instructions improved from 33 percent just after implementation to 80 percent at the time of the report.

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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


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Typical Deployment Locations

Metropolitan Areas


DMS, CMS, VMS, Changeable Message Signs, Variable Message Signs, CCTV, closed circuit television cameras, road monitoring, camera imaging

Benefit ID: 2007-00413