Quantitative risk assessment of freeway crash casualty using high-resolution traffic data
Quantitative risk assessment of freeway crash casualty using high-resolution traffic data
复制标题
使用高分辨率交通数据对高速公路事故伤亡进行定量风险评估
DOI:
10.1016/j.ress.2017.09.005
复制
发表时间:
2018
影响因子:
8.1
通讯作者:
Yong Wang
中科院分区:
文献类型:
--
作者:
Chengcheng Xu;Yong Wang
This study aimed to investigate the impacts of traffic flow conditions on crash casualty of different collision types using high-resolution traffic data. The principle components analysis was conducted to deal with a large number of correlated lane-specific traffic variables. A four-stage random-parameters sequential logistic regression model was then developed to link the probability of crash casualty of each collision type with real-time traffic flow, weather, and geometric conditions. The results showed that the risks of injuries in sideswipe crashes increase with an increase in the speed difference between adjacent lanes, volume on right lane, and standard deviation of volume on inner lanes. The congested traffic conditions and its interaction with adverse weather decrease the risks of injuries in sideswipe crashes. For rear-end crashes, the congested traffic conditions at diverge area, and large difference in speed on right lane between upstream and downstream station in adverse weather contribute to crash casualty. Moreover, high volume on inner lanes reduce the risks of injuries in rear-end crashes. The validation results showed that the prediction accuracy at each severity level by collision types is satisfactory.
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10.2307/2982678
发表时间:
1992
影响因子:
2
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通讯作者:
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1995
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