An Analysis of Risk Factors for Rear-Ender Accident on Urban Expressway Considering Accident Severity

The purpose of this study is to investigate the impact of the traffic accidents factors on rear-ender collision accident risk by accident severity. This study is to clarify a relationship between the traffic states and rear-ender collisions accident risk using generalized linear model analysis for accident severity level. As the result, it is confirmed that the different influencing factors by accident severity level. Both property damage only and slight injury accident models were found to be significant increase of accident risks in Congested flow state and Mixed flow state, while only the Mixed flow state showed a significant increasing effect on the serious and fatal accidents risks. Furthermore, the heavy vehicles ratio showed a decreasing effect on the property damage only and slight injury accident risks. On the other hand, it is found that the highest heavy vehicles ratio variable (more than 40%) was only significant increasing in serious and fatal accidents risks.


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  • Accession Number: 01689684
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 6 2018 3:06PM