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http://dx.doi.org/10.7470/jkst.2013.31.5.016

Safety Evaluation of Flashing Yellow Operation at Night  

Beak, Tae Hun (Graduate School, Chungbuk National University)
Park, Byung Ho (Department of Urban Engineering, Chungbuk National University)
Publication Information
Journal of Korean Society of Transportation / v.31, no.5, 2013 , pp. 16-25 More about this Journal
Abstract
This study deals with the relationships between flashing operation and traffic accident at signalized intersections. The objective of this study is to analyze safety effects of the yellow flashing operation at night. In pursuing the above, this study gives particular attention to evaluating the safety results from signal operation of Cheongju's 190 signalized intersections using before-after evaluation with comparison group that are categorized by highway function. The main results are as follow. First, the numbers of traffic accidents and of fatalities/injuries in two highway types (arterial and collector road) have increased after operating the yellow flashing signal at night. Second, the numbers of accidents, fatalities/injuries, severe accidents and of fatalities/severe injuries in group A(arterial) have increased by 19%, 36%, 15% and 14%, respectively. Finally, the numbers of accidents, fatalities/injuries, severe accidents and fatalities/severe injuries in group B (collector) have increased by 50%, 64%, 41% and 77%, respectively.
Keywords
Before-After Evaluation; Comparison Group; Safety Evaluation; Traffic Accident; Yellow Flashing Signal;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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