China Safety Science Journal ›› 2019, Vol. 29 ›› Issue (4): 31-36.doi: 10.16265/j.cnki.issn1003-3033.2019.04.006

• Safety Systematology • Previous Articles     Next Articles

Temporal evolution analysis on causes of traffic accidents occurring on secondary highways in mountain areas

JI Xiaofeng1, LI Delin1, YANG Wenchen2   

  1. 1 Faculty of Traffic Engineering, Kunming University of Science and Technology, Kunming Yunnan 650504, China;
    2 National Engineering Laboratory for Surface Transportation Weather Impacts Prevention, Yunnan Institute of Transportation Planning and Design, Kunming Yunnan 650200, China
  • Received:2019-01-24 Revised:2019-03-19 Online:2019-04-28 Published:2020-11-04

Abstract: In order to study the temporal evolution of traffic accidents causes, the entropy-TOPSIS is adopted to quantify the severity of traffic accidents based on the accident data of Yuan-Shuang secondary highway from 2012 to 2017 and using the severity of accidents as dependent variable and the time, traffic environment and participants of accidents as independent variables. Then the correlation analysis was made to study the degree of correlation between dependent variables and independent variables. Finally, a severity analysis model of traffic accidents on each year was established based on Logistic model and its reliability and validity were verified by taking goodness of fit test and prediction accuracy test. The results show that the severity of accidents is highly correlated with factors like weather, time period, accident type, involvement of unprotected vehicles or not and involvement of oversize vehicles or not, and the accident would be severer when an unprotected or oversize vehicle hits pedestrians.

Key words: traffic safety, secondary road, traffic accident severity, Logistic model, entropy-technique for order preference by similarity to ideal solution (TOPSIS)

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