Traffic Accident Models of 3-Legged Signalized Intersections in the Case of Cheongju

3지 신호교차로의 교통사고 발생모형 - 청주시를 사례로 -

  • Park, Byung-Ho (Department of Urban Engineering, Chungbuk National University) ;
  • Han, Sang-Uk (Department of Urban Engineering, Chungbuk National University) ;
  • Kim, Tae-Young (Department of Urban Engineering, Chungbuk National University)
  • Published : 2009.04.30

Abstract

This study deals with the traffic accidents at the 3-legged signalized intersections in Cheongu. The goals are to analyze the geometric, traffic and operational conditions of intersections and to develop a various functional forms that predict the accidents. The models are developed through the correlation analysis, the multiple linear, the multiple nonlinear, Poisson and negative binomial regression analysis. In this study, two multiple linear, two multiple nonlinear and two negative binomial regression models were calibrated. These models were all analyzed to be statistically significant. All the models include 2 common variables(traffic volume and lane width) and model-specific variables. These variables are, therefore, evaluated to be critical to the accident reduction of Cheongju.

Keywords

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