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Development of Accident Model by Traffic Violation Type in Korea 4-legged Circular Intersections

국내 4지 원형교차로 법규위반별 사고모형 개발

  • Park, Byung Ho (Department of Urban Engineering, Chungbuk National University) ;
  • Kim, Kyeong Yong (Department of Urban Engineering, Chungbuk National University)
  • Received : 2012.03.19
  • Accepted : 2015.03.23
  • Published : 2015.04.30

Abstract

This study deals with the traffic accident of circular intersections. The purpose of the study is to develop the accident models by traffic violation type. In pursuing the above, this study gives particular attention to analyzing various factors that influence traffic accident and developing such the optimal models as Poisson and Negative binomial regression models. The main results are the followings. First, 4 negative binomial models which were statistically significant were developed. This was because the over-dispersion coefficients had a value greater than 1.96. Second, the common variables in these models were not adopted. The specific variables by model were analyzed to be traffic volume, conflicting ratio, number of circulatory lane, width of circulatory lane, number of traffic island by access road, number of reduction facility, feature of central island and crosswalk.

Keywords

roundabout;poisson regression model;negative binomial regression model;traffic violation

References

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