A 1995 North American survey of traffic management centers using ramp metering, identified reductions of 15 to 50 percent in freeway crashes.

June 1995
Nationwide; United States

Summary Information

A survey of traffic management centers using ramp metering reported that accidents on freeway systems under freeway management were reduced between 15 and 50 percent. While some other freeway improvements were implemented during the study periods, the combination of geometric, vehicle, and operational procedures resulted in significant reduction of accident rate.


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Ramp Metering Status in North America, 1995 Update

Author: Robinson, J. and G. Piotrowicz

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

Source Date: June 1995

EDL Number: 3725

Other Reference Number: Report No. DOT-T-95-17



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Benefit ID: 2000-00077