Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Analysis on Factors Affecting Traffic Accident Severity - Case Study : Arterial Included Curve Section -

교통사고심각도 영향요인 분석에 관한 연구 - 곡선부가 포함된 국도를 중심으로 -

  • Park, Jae Hong (Highway & Transportation Research Division, Korea Institute of Construction Technology) ;
  • Yun, Duk Geun (Highway & Transportation Research Division, Korea Institute of Construction Technology) ;
  • Sung, Jung Gon (Highway & Transportation Research Division, Korea Institute of Construction Technology)
  • 박재홍 (한국건설기술연구원 SOC성능연구소 도로교통연구실) ;
  • 윤덕근 (한국건설기술연구원 SOC성능연구소 도로교통연구실) ;
  • 성정곤 (한국건설기술연구원 SOC성능연구소 도로교통연구실)
  • Received : 2013.03.27
  • Accepted : 2013.10.07
  • Published : 2013.10.31
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Abstract

The main causes of traffic accidents can be classified by 3 factors - human error, vehicle deficiency and road environmental problem and most accidents occurs not only 1 factor but combination of 2 or 3-factors. Among these factors, road environmental factor is the most important factor due to influence the behavior of cars and road users and road environmental factor affects 30% of total accidents approximately. The 5 years traffic accidents data analyzed to verify the accidents severity on Korea National Highways. In order to analyze the severity, Ordered Probit Model was used. As a independent variables of this model the number of lane, neighbor road environments, sight distance, vertical grade, lane width, shoulder width and traffic volume were used and as a dependent variables the minor injuries, serious injuries and fatalities were used. Research results shows that sight distance and lane width are identified as significant factors for the traffic accident severity and lesser sight distance and lane width shows greater traffic accident severity.

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