In Utah, incident management teams in Salt Lake Valley area decreased incident duration by approximately 20 minutes per incident on three major interstates.

An evaluation of the Utah Advanced Transportation Management System (ATMS) in the Salt Lake Valley

March 2004
Salt Lake Valley; Utah; United States

Summary Information

This report provides assessments of the impact on transportation operations and a cost benefit analysis of four Advanced Traffic Management System (ATMS) components deployed in the Salt Lake Valley of Utah: incident management teams, ramp metering, signal coordination, and variable message signs. Two of the benefits assessments in the report were drawn from field experience with the Utah system, the others were estimated using impacts derived from the literature.


Incident data were collected for a duration of five years (1999-2003) for three major interstates that account for 77 percent of IMT-assisted incidents. The analysis shows that since the implementation of IMT, the average incident duration decreased by approximately 20 minutes. The decrease in incident duration was highest for incidents affecting two lanes of traffic with over a 36 percent decrease (37 minutes). Because of the increase in staff and coverage area, local IMT responses increased from approximately 2,500 incident responses in 2000 to over 5,000 incident responses in 2002.

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Advanced Transportation Management System Elemental Cost Benefit Assessment

Author: Perrin, Joseph, Rodrigo Disegni, and Bhargava Rama

Published By: The Utah DOT and U.S. DOT

Prepared by the University of Utah

Source Date: March 2004


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Goal Areas


Typical Deployment Locations

Metropolitan Areas


freeway service patrol, courtesy patrols, highway helpers, freeway service patrols

Benefit ID: 2007-00443