Method for identifying single intersection signal timing imbalance state

Abstract

The invention discloses a method for identifying a single intersection signal timing imbalance state. The problems that in the prior art, the data source is single, the judgment accuracy is difficultto guarantee, and timing optimization cannot be guided are solved. The method comprises the following steps of S1, acquiring static information of an intersection and dynamic data of the intersection,S2, sequentially calculating lane saturation, flow direction saturation, flow direction queuing length and flow direction queuing intensity according to the obtained static information and dynamic data, S3, judging a flow direction state according to a calculation result, S4, judging an inlet state according to the flow direction state, and S5, judging whether the intersection state is unbalancedor not through an intersection judgment rule according to the inlet state. According to the scheme, the data volume source is rich, and the judgment accuracy is ensured; a distinguishing system for different dimensions of lanes, flow directions, entrances and intersections is established, specific reasons for problems can be positioned, so that signal optimization is facilitated, and a decision basis is provided for formulation of a timing optimization scheme.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to a method for identifying an imbalanced state of signal timing at a single intersection. Background technique [0002] In recent years, the number of motor vehicles has continued to increase, and the problem of imbalance between traffic supply and demand has become increasingly serious. Affected by weather, road conditions, and emergencies, the traffic flow is highly random, and the currently running timing plan may not be able to match the traffic flow, resulting in the phenomenon that one entrance is congested and the other is empty, causing road traffic. Waste of time and space resources. [0003] At present, in practical engineering applications, the problem of signal timing imbalance at intersections is often identified through manual inspection and video viewing, which is neither comprehensive nor timely, and it is impossible to accurately grasp the traffic situati...

AI Technical Summary

Problems solved by technology

[0006] The present invention mainly solves the problems in the prior art that the data source is single, it is difficult to ensure the accuracy of the recognition results, and it is impossible to guide the optimization of timing

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