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Analysis of Contributory Factors in Causing Crashes at Rural Unsignalized intersections Based on Statistical Modeling
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 Title & Authors
Analysis of Contributory Factors in Causing Crashes at Rural Unsignalized intersections Based on Statistical Modeling
PARK, Jeong Soon; OH, Ju Taek; OH, Sang Jin; KIM, Young Jun;
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Traffic accident at intersections takes 44.3% of total number of accidents on entire road network of Korea in 2014. Although several studies addressed contributory factors of accidents at signalized intersection, very few is known about the factors at rural unsignalized intersections. The objective of this study is therefore to investigate specific characteristics of crashes at rural unsignalized intersection and to identify contributory factors in causing crashes by statistical approach using the Ordered Logistic Regression Model. The results show that main type of car crashes at unsignalized intersection during the daytime is T-bone crashes and the number of crashes at 4-legged intersections are 1.53 times more than that at 3-legged intersections. Most collisions are caused by negligence of drivers and violation of Right of Way. Based upon the analysis, accident severity is modeled as classified by two types such as 3-legged intersection and 4-legged intersection. It shows that contributory factors in causing crashes at rural unsignalized intersections are poor sight distance problem, average daily traffic, time of day(night, or day), angle of intersection, ratio of heavy vehicles, number of traffic violations at intersection, and number of lanes on minor street.
ordered logistic regression;safety;severity;traffic violation;unsignalized intersection;
 Cited by
도로변 수직구조물 충돌사고의 심각도 영향요인에 관한 연구,임준범;이수범;윤덕근;박재홍;

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