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Development of Traffic Accident Safety Index under Different Weather Conditions  

Park, Jun-Tae (서울시립대학교 교통공학과)
Hong, Ji-Yeon (서울시립대학교 교통공학과)
Lee, Su-Beom (서울시립대학교 교통공학과)
Publication Information
Journal of Korean Society of Transportation / v.28, no.1, 2010 , pp. 157-163 More about this Journal
Abstract
It is well known that weather conditions are closely related with the number and severity of traffic accidents. At present, installation of safety countermeasures including systems is common approach to reduce the damage of traffic accidents at expressways. In this study, the differences of causation factors to influence traffic accidents considering road alignment characteristics and weather conditions. In order to identify the relationship between road and weather conditions, discriminant analysis has been performed with 500 traffic accident data at expressways. Weather conditions are divided into several categories such as snow, sunny, rain, fog, and cloud. Also, road conditions such as types of pavements, grades are analyzed. As the results, major impacting road conditions to traffic accidents are concrete pavement and 3% or more down grades. In these road conditions, visible distance will be reduced and actual braking distances will be increased. This study shows that the expressway sections under concrete pavement and down grades should be more cautious than other sections. It also shows that fog condition is the mose dangerous situation in terms of traffic accidents.
Keywords
Express-way; Weather-conditions; Discriminant Analysis; Safety Index; Alignment;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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