Abstract Introduction This study sets out to investigate the interactive effect on injury severity of driver-vehicle units in two-vehicle crashes. Method A Bayesian hierarchical ordered logit model is proposed to relate the variation and correlation of injury severity of drivers involved in two-vehicle crashes to the factors of both driver-vehicle units and the crash configurations. A total of 6417 crash records with 12,834 vehicles involved in Florida are used for model calibration. Results The results show that older, female and not-at-fault drivers and those without use of safety equipment are more likely to be injured but less likely to injure the drivers in the other vehicles. New vehicles and lower speed ratios are associated with lower injury degree of both drivers involved. Compared with automobiles, vans, pick-ups, light trucks, median trucks, and heavy trucks possess better self-protection and stronger aggressivity. The points of impact closer to the driver's seat in general indicate a higher risk to the own drivers while engine cover and vehicle rear are the least hazardous to other drivers. Head-on crashes are significantly more severe than angle and rear-end crashes. We found that more severe crashes occurred on roadways than on shoulders or safety zones. Conclusions Based on these results, some suggestions for traffic safety education, enforcement and engineering are made. Moreover, significant within-crash correlation is found in the crash data, which demonstrates the applicability of the proposed model.

    Highlights The interactive effect on injury severity of driver-vehicle units in two-vehicle crashes is investigated. A Bayesian hierarchical ordered logistic model is developed to estimate the interactive effect. Significant effects on the own driver's injury is found for some factors related to the other driver-vehicle unit. Some suggestions for traffic safety education, enforcement and engineering are made, based on the analytical results.


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    Title :

    The interactive effect on injury severity of driver-vehicle units in two-vehicle crashes


    Contributors:
    Zeng, Qiang (author) / Wen, Huiying (author) / Huang, Helai (author)

    Published in:

    Publication date :

    2016-10-06


    Size :

    7 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






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