In Denver, Colorado emergency vehicle signal preemption reduced response time by 14 to 23 percent.
The collected data showed emergency vehicle response times decreased by 14 to 23 percent and saved approximately 70 seconds per response on a typical route with 3 to 6 signalized intersections.
Time Study of the Effectiveness of the Opticom Traffic Control System (Year 1978)
Published By: Prepared by the Denver Department of Safety for the City of Denver
Source Date: 5 October 1978
Other Reference Number: Report No. D-ORTS/78
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preempt, emergency preemption, traffic signals, EVP, emitter