A Distinguishing Method for Highway Accident-prone Sections by Distinguishing Single-vehicle and Multi-vehicle Accidents

Abstract

The invention relates to a judging method for distinguishing highway accident-prone road sections in single-car accidents from highway accident-prone road sections in multi-car accidents. The method is applied to the field of traffic safety management and road safety assessment. By collecting road geometric data, traffic operation data and traffic accident data, traffic accidents are divided intothe single-car accidents and the multi-car accidents according to accident forms; on the basis of road geometric parameters, highway homogenous road sections are divided, and the number of the single-car accidents and the number of the multi-car accidents of each road section are counted to build a sample data set for traffic safety analysis; a full Bayesian method is used for establishing a safety performance model of the single-car accidents and a safety performance model of the multi-car accidents separately, sample data is substituted into the safety performance models to calculate a safety enhanced space, the road sections are sorted accordingly, and therefore the accident-prone road sections in the single-car accidents and the accident-prone road sections in the multi-car accidents are judged. According to the method, the highway accident-prone road sections in the single-car accidents and the highway accident-prone road sections in the multi-car accidents are judged separately.Compared with accident-prone road section judging methods based on the total number of accidents, the method has the advantages of higher accuracy and reliability.

Description

technical field [0001] The invention relates to the field of traffic safety management, in particular to a method for distinguishing highway accident-prone road sections for distinguishing single-vehicle accidents and multi-vehicle accidents. Background technique [0002] Expressway has the advantages of perfect transportation facilities, large traffic flow, and comfortable operation. However, the higher vehicle speed leads to a higher level of traffic accident severity. According to statistics, the death rate of expressways in my country is 4.2 times that of ordinary highways. . In 2003, among the 29 national-level accident-risk sections announced by the Ministry of Public Security, expressways accounted for 5, and the proportion was much higher than that of ordinary highways. Expressway traffic safety has been paid more and more attention by managers, and the development focus has gradually entered the stage of "simultaneous management and construction, and management is t...

AI Technical Summary

Problems solved by technology

[0004] The existing identification of accident-prone road sections mostly uses the total number of accidents for identification, failing to take into account the differences in the spatial distribution of different types of accidents and the differences in improvement measures, such as single-vehicle accidents and multi-vehicle accidents

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