期刊
TRAFFIC INJURY PREVENTION
卷 23, 期 1, 页码 17-22出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15389588.2021.1995602
关键词
Traffic safety; low visibility; random parameter logit regression; injury severity; factor
资金
- China Postdoctoral Science Foundation [2021M690296]
- National Natural Science Foundation of China [51878236, 71971073]
- Open Fund for the Key Traffic Safety Laboratory of the Ministry of Public Security [2021ZDSYSKFKT01]
Factors such as visibility, road type, road surface condition, and road alignment have significant impacts on the severity of pedestrian-vehicle collisions and vehicle-vehicle collisions under low-visibility conditions. Collisions on highways, poor road pavement, and non-straight-line sections are more likely to result in fatal or serious injuries. The study findings can help in developing more effective strategies to reduce casualties in traffic crashes under low-visibility conditions.
Objectives Traffic crashes under low-visibility conditions are frequent and serious. The aim of this study was to investigate how the road environment affects the severity of pedestrian-vehicle and vehicle-vehicle collisions under low-visibility conditions. Methods The injury severity of pedestrian-vehicle collisions and vehicle-vehicle collisions under low-visibility conditions was set as the dependent variable and divided into 2 categories: killed or severe injury collision and slight injury collision. Ten variables, including environment conditions, road traffic facility status, collision characteristics, and road attributes, were selected as independent factors according to the existing research and the traffic collision data set. Based on 656 valid pedestrian-vehicle collisions and 1,430 valid vehicle-vehicle collisions under low-visibility conditions, 2 random parameter logit models were established to evaluate the impacts of influencing factors on the severity of pedestrian-vehicle collisions and vehicle-vehicle collisions, in which the effect of unobserved heterogeneity was accounted for. Results The results show that visibility, presence of a roadside protection, road type, road pavement condition, and road alignment were significant factors affecting the severity of pedestrian-vehicle collisions. In addition, the presence of a median divider, location of the collision, road type, road surface condition, road pavement condition, and road alignment were significant factors affecting the severity of vehicle-vehicle collisions. Furthermore, the injury severity of both pedestrian-vehicle collisions and vehicle-vehicle collisions under low-visibility conditions on highways, poor road pavement, and non-straight-line sections was more likely to be fatal or serious. Conclusion These results have implications for the design of more effective strategies to reduce casualties from traffic crashes under low-visibility conditions.
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