In San Antonio, a modeling study found that if traffic congestion were to increase by 25 percent, posting nearby railroad crossing closing delays on freeway dynamic message signs would reduce crashes by 8.7 percent.
The system was found to work well; however, at the time of the study low levels of congestion in the network did not warrant the implementation of an advanced warning system to avoid long delays. Simulation techniques were used to show the potential benefits of the system and to identify a decision-point at which congestion levels would warrant such a system in the future.
With a 20 percent driver compliance rate the crash rate would decrease by 8.7 percent.
Author: Carter, Mark, et al.
Published By: Federal Highway Administration, U.S. DOT
Prepared by SAIC for the U.S. DOT
Source Date: October 2000
EDL Number: 13284URL: http://ntl.bts.gov/lib/jpodocs/repts_te/13284.pdf
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railroad crossings, HRI, Highway Rail Intersections, grade crossing closure, railroad crossing, AWARD