As the key area of traffic flow,the accident rate of the intersection is relatively high,and the probability of conflict and the severity of the accident are different at different intersections,and the overall safety level of the intersection can be analyzed by using traffic conflict technology.In this paper,the video data of six intersections in Xi'an city during the morning rush hour are collected by unmanned aerial vehicle,and the deceleration is used as the evaluation index of traffic conflicts,and the intersection safety level is obtained by using the portfolio empowerment of analytic hierarchy process and entropy weight method,and the whitening weight function is established to divide the safety level of safety level.The results show that the safety level of the intersection of Zhuhong Road and Jinhong Road is the lowest,the intersection of Fengcheng 12th Road and Fengcheng North Road is the second,and the safety level of the other intersections is safe.The comparison of the safety level of each intersection is realized,which provides a reference for the study of the safety level of different intersections.
关键词
交通冲突/安全水平评价/减速度/组合赋权/白化权函数
Key words
traffic conflicts/safety level evaluation/deceleration/portfolio empowerment/whitening weight function
维普
万方数据