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Accident Reduction Effects by year After Installation of Red Light Cameras  

Kim, Tae-Young (충북대학교 도시공학과)
Park, Byung-Ho (충북대학교 도시공학과)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.9, no.2, 2010 , pp. 23-32 More about this Journal
Abstract
Because ROTA(road traffic authority) analyzes the effects of accident reduction based on the data of 1-year after installation of RLC(red light camera), study of accident reduction effects over year after the installation of RLC is very short. This study deals with the traffic accident reduction during 3 years after the installation of RLC. The objective is to analyze the effects of accident reduction by year using EB method. In pursuing the above, the study uses the 951 accident data occurred at the 20 intersections which RLC are installed. The main results analyzed are as follows. First, the safety performance function (SPF) has been developed by the Poisson regression models which are statistically significant. Second, the results of an Empirical Bayes(EB) analyses showed that the accidents were reduced by the range from 2.73 to 38.75% after 1 year, from 6.85 to 47.36% after 2 year, and from 6.04 to 39.31% after 3 year from the installation of RLC.
Keywords
Poisson regression; empirical bayes method; red light camera; effects of accident reduction by year;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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