Before-and-After Analysis of Advanced Transportation Management Systems (Revised, September 1997)

Henk, Russell H.; Molina, Mariano E.; Venglar, Steven P.

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Before-and-After Analysis of Advanced Transportation Management Systems (Revised, September 1997)

1997-09-01
By Henk, Russell H. ; Molina, Mariano E. ; Venglar, Steven P.

File Language:

English

Details

Creators:

Henk, Russell H. ; Molina, Mariano E. ; Venglar, Steven P.
Corporate Creators:

Texas Transportation Institute
Corporate Contributors:

Texas. Department of Highways and Public Transportation. Research and Technology Transfer Office
Subject/TRT Terms:

Accident Prevention Advanced Traffic Management Systems ATMS Data Analysis Data Collection Highway Transportation Incident Management Intelligent Transportation Systems ITS Management Measures Of Effectiveness Research Projects San Antonio TransGuide Surveys Traffic Data Traffic Data Analysis Transportation Management Transportation Safety Transportation Systems
Publication/ Report Number:

FHWA/TX-98/1467-3 ; Research Report 1467-3
Resource Type:

Tech Report
Geographical Coverage:

Texas
Edition:

Interim: September 1, 1994 - August 31, 1996
Corporate Publisher:

Texas Transportation Institute
Abstract:

This report documents the general procedures and results associated with a before-and-after analysis of Phase I of the San Antonio TransGuide System. This analysis focuses on the issues of:1) safety; 2) incident management; and 3) driver understanding and utilization of the system. The first phase of the TransGuide System became operational July 26, 1995, and, includes 26 miles of freeway in the downtown San Antonio area. An improvement in safety has been observed in association with TransGuide System implementation. This improvement includes a 15 percent reduction in injury accident rate within the limits of the TransGuide System. Over the same time frame, injury accident rate increased 4.3 percent on freeways not included within the TransGuide System (i.e., control freeways). The benefits associated with these improvements translate into an annual savings of $4.3 million. Review of video data has indicated an average reduction in response time of 20 percent. These results have further been used as input to the FREFLO freeway simulation model to quantify the impacts of reduced response time on delay and fuel consumption during major incidents. The results of the analysis indicate an average delay savings of 700 vehicle-hours and reduction in fuel consumption of 2,600 gallons per major incident. Based upon accident frequency for freeways included within Phase I of TransGuide, these figures translate to an annual savings of $1.65 million. A series of fifteen (15) before-and-after surveys have also been distributed to a panel of over 600 downtown employees. The results of these surveys indicate excellent driver understanding, compliance, and confidence in the system.
Content Notes:

Research Study Title: Highway Operations Research and Implementation
Format:

PDF
Funding:

Study No. 0-1467
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:c138144873bfb4d855fb1466d8a8e85a11b66282db1e00c8e8aebb5006020087
Download URL:

https://rosap.ntl.bts.gov/view/dot/57519/dot_57519_DS1.pdf
File Type:

[PDF - 713.94 KB ]

File Language:

English

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