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http://dx.doi.org/10.7855/IJHE.2015.17.1.119

Effect Analysis on Red Light Camera for Signalized Intersection Safety -Focused on Side Right-Angle Collision Accidents-  

Oh, Ju Taek (한국교통대학교 도시공학과)
Kim, Yong Seok (도로교통공단 전북지부 교육홍보부)
Lee, Yong Chul (한국교통대학교 도시공학과)
Publication Information
International Journal of Highway Engineering / v.17, no.1, 2015 , pp. 119-127 More about this Journal
Abstract
PURPOSES : Before-and-after studies of red light cameras were conducted with the aim of reducing the number of side right-angle collisions. Three different methods were used for the before-and-after studies, and the analysis results were compared. METHODS : This research used the naive before-and-after method, the comparison-group method, and the empirical Bayes method to study the effects of red light cameras on side-angle collisions. The results of the three before-and-after methods were compared and interpreted in terms of safety indications at signalized intersections. RESULTS : The research results showed that side right-angle collisions can be reduced by installing red light cameras at signalized intersections. All three methods guarantee safety improvements of 25~30% on average. With regard to the results of each method, the naive before-and-after method, the comparison-group method, and the empirical Bayes method showed safety improvements of 25.6%, 27.8%, and 29.7%, respectively. CONCLUSIONS : It was concluded that red light cameras are an effective countermeasure to improve intersection safety. In particular, by installing red light cameras, side right-angle collisions can be reduced by up to approximately 25~30%.
Keywords
red light camera; side right-angle collisions; signalized intersection; safety; observational before-after studies; naive method; comparison group method; empirical bayes method;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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