Traffic intersection risk level evaluation method and device, electronic equipment and storage medium

Abstract

The invention discloses a traffic intersection risk level evaluation method and device, electronic equipment and a storage medium and belongs to the technical field of traffic safety evaluation. According to the method, an index weight determination method based on local difference is proposed to determine the weight of each risk index passing through the intersection among different objects fromthe nonlinear characteristic of the traffic intersection evaluation standard, and risk level evaluation is performed in combination with a cloud model, so a problem of fuzziness of each evaluation index is effectively solved, and risk level evaluation accuracy is improved. A conflict evaluation index attribute discrete standard is established, natural conversion between qualitative concepts of conflict risk levels among different objects and conflict evaluation index quantitative concepts is achieved, and evaluation accuracy and reliability are improved; problems that an existing traffic intersection conflict evaluation index is single in selection and unreasonable in weight distribution are solved.

Description

technical field [0001] The invention belongs to the technical field of traffic safety evaluation, and in particular relates to a method, device, electronic equipment and storage medium for evaluating the risk level of a traffic intersection. Background technique [0002] With the acceleration of urbanization and the improvement of people's living standards, the proportion of private car travel is getting higher and higher, and the number of traffic accidents is also increasing year by year. Among them, the intersection is the collection and distribution point of motor vehicle flow, non-motor vehicle flow and pedestrian flow in all directions. The complexity of its operating environment and the uncertainty of the behavior of traffic participants make the intersection a bottleneck in the operation of the road network and a frequent place for accidents. , therefore, the evaluation of intersection safety becomes particularly important. [0003] The evaluation of the safety stat...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the unreasonable weight distribution of existing traffic intersection evaluation index weights, the present invention starts from the non-linear characteristics of traffic intersection evaluation standards, and proposes an index weight determination method based on local differences to determine the weights of various risk indicators for pedestrians crossing the street, and combines cloud The model is used to evaluate the risk level, which effectively solves the ambiguity problem of each evaluation index itself, establishes the discrete standard of conflict evaluation index attributes, and realizes the qualitative concept of conflict risk level between different objects and the quantitative concept of conflict evaluation index. Natural conversion, improving assessment accuracy and reliability

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