Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Analysis of Traffic Accident by Circular Intersection Type in Korea Using Count Data Model

가산자료 모형을 이용한 국내 원형교차로 유형별 교통사고 분석

  • Kim, Tae Yang (Department of Urban Engineering, Chungbuk National University) ;
  • Lee, Min Yeong (Department of Urban Engineering, Chungbuk National University) ;
  • Park, Byung Ho (Department of Urban Engineering, Chungbuk National University)
  • Received : 2017.06.13
  • Accepted : 2017.08.31
  • Published : 2017.10.31
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Abstract

This study aims to develop the traffic accident models by circular intersection type using count data model. The number of accident, the number of fatal and injured persons(FSI), and EPDO are calculated from the traffic accident data of TAAS. The circular intersection accident models are developed through Poisson and negative binomial regression analysis. The main results of this study are as follows. First, the null hypotheses that there are differences in the number of traffic accidents, FSI and EPDO by type of circular intersections are rejected. Second, the scale of intersection(median, large), number of approach road, mean width and length of exit road, area of the circulating roadway and central island are selected as factors influencing the number of traffic accidents, FSI and EPDO in rotary. Third, the scale of intersection(median), guide signs(limited speed, direction, roundabout), number of approach road, entry angle, area of the intersection and central island are adopted as factors influencing the number of traffic accidents, FSI and EPDO in roundabout. Finally, transferring from rotary to roundabout could be expected to make the accident decrease.

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References

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