System, method and device for determining traffic saturation

Abstract

The invention provides a system, a method and a device for determining traffic saturation, and relates to the field of traffic signal lamp control. The method includes acquiring vehicle occupation data in red lamp phase durations; determining demand traffic volumes of corresponding lanes of to-be-detected phase according to comparison results of occupation time of the vehicle occupation data and preset occupation time; determining the traffic saturation according to the demand traffic volumes of the corresponding lanes of the to-be-detected phase, saturation flow rates and timing information of signal periods to which the red lamp phase durations belong. The vehicle occupation data are transmitted by upstream detectors in the corresponding lanes of the to-be-detected phase. The traffic saturation corresponds to the to-be-detected phase. The system, the method and the device have the advantages that separate point detectors of the corresponding lanes of the to-be-detected phases and thetiming information of the signal periods corresponding to the to-be-detected phase are combined with one another, accordingly, the traffic demand volumes of the corresponding lanes of the to-be-detected phase can be accurately measured, and the computational accuracy of the traffic saturation can be improved.

Description

technical field [0001] The present application relates to the technical field of traffic control, in particular, to a system, method and device for judging traffic saturation. Background technique [0002] Traffic saturation is one of the important indicators reflecting the level of road service. The higher the value of traffic saturation, the lower the level of road service. Since the road service level and congestion degree are restricted by many factors, it is difficult to consider many factors in practice, so the saturation value is often used as the main index to evaluate the service level. [0003] In the prior art, the method of obtaining traffic saturation is as follows: by laying induction coils at the stop line of road intersections, the number of passing vehicles within a set time period is collected through the induction coils, and the saturation is calculated according to the collected number of vehicles , to obtain the traffic saturation of road intersections....

AI Technical Summary

Problems solved by technology

In practice, during the peak hours of commuting, there is a phenomenon that the actual traffic flow is less, which leads to the acquired saturation being smaller than the actual saturation, thus affecting the analysis of traffic conditions based on saturation

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