Determination method of motor vehicle traffic conflict number based on conflict traffic flow characteristics

Abstract

The invention discloses a determination method of motor vehicle traffic conflict number based on conflict traffic flow characteristics. According to the tight correlativity between the conflict traffic flow characteristics and traffic conflict number, traffic conflict survey time period is divided in a layering mode by utilizing the conflict traffic flow characteristics as a mark, stratified sampling is conducted to selection of motor vehicle traffic conflict survey time period of a city crossroad, and therefore survey time of the traffic conflict is shortened and survey accuracy of the traffic conflict number is improved. According to the determination method of the motor vehicle traffic conflict number based on the conflict traffic flow characteristics, flow parameter of the conflict traffic flow is obtained by a traffic flow detecting device, the traffic conflict survey time period is divided in the layering mode by utilizing the conflict traffic flow characteristics as the mark, the defect that current city traffic conflict survey can only depend on experiences in fixed time period is overcome, and accuracy of conflict number survey is improved. The determination method of the motor vehicle traffic conflict number based on the conflict traffic flow characteristics has practical engineering applying value in the aspects of city traffic safety management and evaluation.

Description

technical field [0001] The invention relates to the field of traffic safety, in particular to a method for determining the number of motor vehicle traffic conflicts based on the characteristics of conflicting traffic flow. Background technique [0002] Traffic conflict technology uses observed traffic conflicts as a substitute indicator of traffic accidents to evaluate the safety status of road traffic facilities. As an indirect safety evaluation method, traffic conflict technology has the advantages of rapid data acquisition, short evaluation period, and large sample size. has been widely used. The basis of the technical research on traffic conflicts is the effective acquisition of the number of traffic conflicts in traffic facilities. It can be said that the accuracy of the investigation of the number of traffic conflicts largely determines the effectiveness and reliability of the research on traffic conflicts. [0003] However, the commonly used traditional traffic confl...

AI Technical Summary

Problems solved by technology

The traditional traffic conflict investigation method has a relatively fixed survey period design, and the main defect is that the traffic flow state is divided according to experience, so the accuracy of the survey results is difficult to guarantee

At the same time, due to the workload of investigators, the traditional traffic conflict investigation interval generally does not include the night time period.

These deficiencies have seriously affected the accuracy and scientificity of traffic conflict investigations

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