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Developing the Pedestrian Accident Models of Intersections using Tobit Model

토빗모형을 이용한 교차로 보행자 사고모형 개발

  • Lee, Seung Ju (Department of Urban Engineering, Chungbuk National University) ;
  • Lim, Jin Kang (Department of Urban Engineering, Chungbuk National University) ;
  • Park, Byung Ho (Department of Urban Engineering, Chungbuk National University)
  • Received : 2014.06.30
  • Accepted : 2014.09.25
  • Published : 2014.10.31

Abstract

This study deals with the pedestrian accidents of intersections in case of Cheongju. The objective is to develop the pedestrian accident models using Tobit regression model. In pursuing the above, the pedestrian accident data from 2007 to 2011 were collected from TAAS data set of Road Traffic Authority. To analyze the accident, Poisson, negative binomial and Tobit regression models were utilized in this study. The dependent variable were the number of accident by intersection. Independent variables are traffic volume, intersection geometric structure and the transportation facility. The main results were as follows. First, Tobit model was judged to be more appropriate model than other models. Also, these models were analyzed to be statistically significant. Second, such the main variables related to accidents as traffic volume, pedestrian volume, number of traffic island, crossing length and the pedestrian countdown signal systems were adopted in the above model.

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