Benefit

In San Antonio, Texas, focus group participants felt that DMS were a reliable source of traffic information.

May 2000
San Antonio,Texas,United States

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Summary Information

This report summarized the results of several ITS evaluation projects in the city of San Antonio, Texas. San Antonio had a relatively extensive implementation of ITS prior to this study and, consequently, the incremental benefits experienced in San Antonio through expansion and additions to the existing system may be somewhat smaller than the benefits that could be achieved in areas with little prior implementation of ITS.

The evaluation report contained benefits information regarding the implementation of dynamic message signs (DMS) along a freeway corridor. Focus group studies indicated that customers were satisfied with the DMS system, but did have some suggestions for improvement. Participants in the focus groups felt that DMS system was a reliable source of traffic information, primarily due to their proximity to the congestion or incident.

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Source

Metropolitan Model Deployment Initiative: San Antonio Evaluation Report - Final Draft

Author: Carter, M., et al.

Published By: Federal Highway Administration, U.S. DOT

Prepared by SAIC for the U.S. DOT

Source Date: May 2000

EDL Number: 12883

Other Reference Number: Report No. FHWA-OP-00-017

URL: http://ntl.bts.gov/lib/jpodocs/repts_te/12883.pdf

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Benefits From This Source

Evaluation indicated that integrating DMS and incident management systems could reduce crashes by 2.8 percent, and that integrating DMS and arterial traffic control systems could decrease crashes by 2 percent, in San Antonio, Texas.

Evaluation of freeway DMS integrated with incident management in San Antonio, Texas, found fuel consumption reduced by 1.2 percent; integrating the DMS with arterial traffic control systems could save 1.4 percent.

In San Antonio, Texas, 60 percent of drivers of transit vehicles equipped with in-vehicle navigation devices reported that they saved time and felt safer.

In San Antonio, Texas, focus group participants felt that DMS were a reliable source of traffic information.

In San Antonio, Texas, usage of a traveler information Web site increased at a rate of 19 percent per year and spiked during severe weather events.

Modeling performed as part of an evaluation of nine ITS implementation projects in San Antonio, Texas indicated that drivers of vehicles with in-vehicle navigation devices could experience an 8.1 percent reduction in delay.

Modeling performed as part of an evaluation of nine ITS implementation projects in San Antonio, Texas indicated that integrating DMS, incident management, and arterial traffic control systems could reduce delay by 5.9 percent.

Modeling performed as part of an evaluation of nine ITS implementation projects in San Antonio, Texas indicated that users of an improved traveler information web site would receive annual benefits of a 5.4 percent reduction in delay.

Costs From This Source

An advanced highway-rail intersection warning system was deployed for just over $350,000 as part of the San Antonio Metropolitan Model Deployment Initiative.

In-vehicle navigation units and real-time traveler information software development were the main cost drivers for the San Antonio TransGuide MMDI project to improve operations at several public agencies.

Over half of the $3.25 million cost for the San Antonio Lifelink advanced telemedicine project was attributed to reseach and development.

The integrated freeway/incident management system covering 28.9 miles in San Antonio was deployed for approximately $26.6 million.

Benefit ID: 2007-00372