Behavioral Pathways in Bicycle-Motor Vehicle Crashes: From Contributing Factors, Pre-Crash Actions, to Injury Severities

Bicyclists are more vulnerable than motorists in bicycle-motor vehicle crashes. There is a behavioral pathway, from contributing factors, pre-crash actions to injury severities, in crashes, which has been underexplored. This study performed a path analysis to uncover the behavioral pathways in bicycle-motor vehicle crashes. The authors build models to investigate more than 7,000 bicycle-motor vehicle crashes in North Carolina between 2007 and 2014. Pre-crash actions investigated in the study include “bicyclist failed to yield”, “motorist failed to yield”, “bicyclist overtaking motorist” and “motorist overtaking bicyclist”. Model results show significant correlates of pre-crash actions and bicyclist injury severity. For example, young bicyclists (18 years old or younger) are more likely to fail to yield to motor traffic prior to the event of a crash than elder bicyclists. The “bicyclist failed to yield” action is associated with increased bicyclist injury severity than other actions. The path analysis highlights contributing factors related to risky pre-crash actions that lead to severe injuries. For example, intoxicated bicyclists are found to be more likely to involve the “bicyclist failed to yield” action which often results in severe injuries. The path analysis can also identify factors (e.g., intersection) that are not directly but indirectly correlated to injury severity through pre-crash actions. This study offers a methodological framework to quantify the behavioral pathways in bicycle-motor vehicle crashes. The findings are expected to be useful for bicycling safety recommendations from the perspective of bicyclist and motorist behavior, such as the educational program for students in school.

  • Supplemental Notes:
    • This paper was sponsored by TRB committee ANB20 Standing Committee on Safety Data, Analysis and Evaluation.
  • Corporate Authors:

    Transportation Research Board

  • Authors:
    • Liu, Jun
    • Jones, Steven
  • Conference:
  • Date: 2019


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: 7p

Subject/Index Terms

Filing Info

  • Accession Number: 01698095
  • Record Type: Publication
  • Report/Paper Numbers: 19-00598
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 7 2018 9:46AM