Expressway interleaving area safety evaluation method based on traffic conflicts

Abstract

The invention discloses an expressway interweaving area safety evaluation method based on traffic conflicts, and the method comprises the following steps: S1, dividing an expressway interweaving area into a plurality of sections according to the traffic operation characteristics; S2, collecting traffic conflict data of each section, and dividing traffic conflicts into side-click conflicts, rear-end conflicts, general conflicts and serious conflicts; S3, selecting the traffic conflict risk index of each section as a safety evaluation index; and S4, according to the safety evaluation index value of each section obtained in the step S3, determining the safety level of each section of the interlaced area by using a grey clustering analysis method according to an evaluation matrix result. According to the method, the segmented safety evaluation of the expressway interleaving area can be realized, the safety weak part of the expressway interleaving area is effectively identified, the traffic safety of the expressway interleaving area is improved in a targeted manner, and the method has a certain application value in traffic safety management.

Description

technical field [0001] The invention relates to a safety evaluation method for an expressway weaving area, in particular to a safety evaluation method for an expressway weaving area based on traffic conflicts. Background technique [0002] As the main framework of urban roads, urban expressways play an important role in relieving urban traffic pressure and improving travel efficiency of citizens. They often undertake a considerable proportion of motor vehicle travel with limited road resources. As an important part of the urban expressway, the weaving area changes the traffic capacity, frequently changes lanes, accelerates and decelerates, which leads to an increase in the number of traffic conflicts and traffic accidents, and a decrease in safety. Therefore, it is practical to consider the security of the weaving area. On the other hand, traffic accident data has limitations such as non-disclosure, insufficient breadth and depth, and long collection period. Foreign studie...

AI Technical Summary

Problems solved by technology

The weaving area is an important part of the urban expressway, the traffic capacity changes, the vehicles frequently change lanes, accelerate and decelerate, resulting in an increase in the number of traffic conflicts and traffic accidents, and a decrease in safety

Images