Modeling indicated that emergency vehicle signal preemption at three intersections on a Virginia arterial route increased average travel time by 2.4 percent when priority was requested.

July 1999
Leesburg,Virginia,United States

Summary Information

This study used the CORSIM traffic simulation model to evaluate the effectiveness of a emergency vehicle signal preemption. The study consisted of three intersections on Leesburg Pike (Route 7) near the location of a hospital. Leesburg pike is a major commuter route for the Washington DC area. The approach was to use real world traffic data from the intersections for a base case scenario. This information would be coded into the CORSIM model to determine the possible effects on providing emergency vehicle preemption on the three intersections. Results showed that the impact on other traffic is statistically significant, however, it is minimal with a 2.4 percent increase in average travel time when priority is requested.


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Evaluation of Emergency Vehicle Signal Preemption on the Route 7 Virginia Corridor

Author: Bullock, Darcy, et al.

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

Source Date: July 1999

Other Reference Number: Report No. FHWA-RD-99-070.


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Goal Areas


Related Metropolitan Integration Links

Link 22: Emergency Management to Arterial Management

Typical Deployment Locations

Metropolitan Areas


preempt, emergency preemption, traffic signals, EVP

Benefit ID: 2000-00125