Intersection V/C ratio acquiring method and system

Abstract

The invention provides an intersection key V / C ratio-based key route selection method. According to the method, the V / C ratio of each lane group, the possible routes of phases, the the V / C ratios of the routes, the V / C ratios of the key routes of the phases, and the sum of lost time of the key routes are comprehensively considered, and based on the above factors, the key V / C ratio of an intersection is calculated, and therefore, a more reasonable and accurate intersection key V / C ratio can be obtained; based on the intersection key V / C ratio which is obtained through calculation, and by means of the V / C ratios of the lane groups in the same phase and the V / C ratios of lane groups appearing in a plurality of lanes, and sorting and corresponding processing are performed according to the playing sequence of the phases, and therefore, proper key routes can be selected out; and based on the lost time, the v / s ratios of all key lane groups and the v / s ratios of all key routes, the key v / c ratio of the intersection can be obtained. With the method adopted, support can be provided for scientificity, reasonability and timeliness of traffic decision making.

Description

technical field [0001] The present invention relates to the field of intelligent transportation, in particular to a method and system for obtaining the V / C ratio of an intersection. Background technique [0002] With the development of economy and society, the high accident rate caused by motorization forces people to invest a lot of manpower and material resources in the research of traffic safety, among which the analysis and prevention of accidents are especially concerned and valued by people. Many researchers at home and abroad have done a lot of analysis and research on the relationship between traffic volume and traffic accidents, and have regressed the accident model. The traffic volume is an absolute value independent of the road itself, and the ratio of the traffic volume to the capacity of the corresponding road section V / C ratio is a relative quantity that reflects the degree of road congestion. It can better reflect the traffic conditions of the road than the tr...

AI Technical Summary

Problems solved by technology

[0003] Although many foreign researchers have studied the relationship between the V / C ratio accident rate and put forward a similar relationship curve, the basis of these studies is mostly based on foreign driving environment, driver's posture habits, accident rate, etc. Statistical methods and calculation of traffic capacity, etc., these differences have a greater impact on the relationship between V / C ratio and accident rate

At present, we have not yet seen the publication of V / C ratio research and calculation related technologies adapted to the current domestic traffic environment

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