Volume 40 Issue 4
Aug.  2022
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ZHAN Junjun, YUN Meiping, ZHANG Wei, DONG Yijia. An Analysis of Occupant Death Risk of 5-Seater Cars in Two-vehicle Collisions[J]. Journal of Transport Information and Safety, 2022, 40(4): 46-53. doi: 10.3963/j.jssn.1674-4861.2022.04.005
Citation: ZHAN Junjun, YUN Meiping, ZHANG Wei, DONG Yijia. An Analysis of Occupant Death Risk of 5-Seater Cars in Two-vehicle Collisions[J]. Journal of Transport Information and Safety, 2022, 40(4): 46-53. doi: 10.3963/j.jssn.1674-4861.2022.04.005

An Analysis of Occupant Death Risk of 5-Seater Cars in Two-vehicle Collisions

doi: 10.3963/j.jssn.1674-4861.2022.04.005
  • Received Date: 2022-05-19
    Available Online: 2022-09-17
  • To study occupant death risk of 5-seater cars in two-vehicle collisions, the impacts of six variables on fatality rates are compared. Moreover, binary logistic regression is used to analyze the influences of different features and their combinations on occupant death risk. A model to forecast occupant death risk is developed based on a parameter adjustment method of GridSearchCV, three algorithms with larger F1 values are selected from nine classification algorithms, which are voting classifier, gradient boosting, and decision tree. The results show that: ① travel direction, type of road sections, type of crushed vehicles, and different seats have significant effects on occupant death risk. The occupant death risk increases by 72% when compared accidents including vehicles driving in opposite directions with that including vehicles driving in the same direction. The risk decreases by 69% when compared accidents occur at non-freeway intersections with that occur at freeway sections. The occupant death risks for commercial trucks and commercial buses are 5 times and 3 times higher than passenger cars, respectively. The risk rises to around 8 times and 15 times for non-freeway non-intersection sections and freeway sections, respectively. The death risk for passenger seats increased by 70% compared with that for driver seat, and the death risk for passenger seat is nearly 4 times higher than that for driver seat at freeway sections. ② Different vehicles and road-section types are the most important features affecting occupant death. ③ The proposed model indicates that if a commercial truck collides at the front or rear of a 5-seater car at freeway sections or non-freeway non-intersection sections, the occupants have higher risk of death than chance of survival.

     

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