Intersection safety evaluation method based on risk field theory

Abstract

The invention discloses an intersection safety evaluation method based on a risk field theory, and the method comprises the steps: obtaining intersection plane environment information and intersection vehicle operation state data in a to-be-evaluated period; and constructing a vehicle operation environment risk field based on a risk field theory, and representing the risk of each position in the intersection by using the risk borne by the vehicle for intersection safety evaluation. According to the intersection safety evaluation method provided by the invention, the intersection risk can be quantified by taking an intersection plane as an object according to microscopic vehicle motion state data, a unified evaluation method is realized for different types of conflicts, and particularly, the risk quantification of conflicts without intersection of tracks can be realized; and a theoretical basis can be provided for intersection safety operation management and intersection safety improvement.

Description

technical field [0001] The invention belongs to the field of traffic safety, and relates to the field of risk field theory and intersection safety evaluation. The invention quantifies the risk that a vehicle bears and corresponds to the intersection plane, so as to carry out the intersection safety evaluation, and provides an intersection based on the risk field theory. safety evaluation method. Background technique [0002] Road traffic safety has always been a research hotspot in the field of traffic. Intersections are an important part of urban roads. The composition of traffic flow at urban intersections is complex, and traffic flows in different directions affect each other. Therefore, the problem of intersection safety is particularly prominent. The bottleneck of improving road traffic efficiency and safety level. Effective and reasonable evaluation of the safety operation level of the intersection according to the operation status of the vehicles at the intersection ...

AI Technical Summary

Problems solved by technology

[0005] Existing research has the following deficiencies: (1) Most of the vehicle itself is the main body for intersection collision risk assessment, which can only realize single-vehicle collision warning, but has not realized the safety evaluation of the entire intersection; (2) Different types of conflicts need to use Different evaluation methods do not achieve a unified evaluation, and ignore the risk quantification in the scenario where the trajectory does not intersect; (3) The application of risk field theory in road safety evaluation is mostly in the road section scenario, but not in the intersection scenario

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