Evaluation Method of Signal Timing Scheme at Intersection in Saturated State

Abstract

The invention provides a saturated state intersection signal timing scheme evaluation method and belongs to the traffic control technical field. The method comprises the following steps that: the actually measured values of evaluation indexes before and after a saturated state intersection signal timing scheme is optimized are obtained; the difference values of the evaluation indexes of each phase of an intersection before and after optimization is performed are calculated according to the actually measured values of the evaluation indexes before and after the timing scheme is optimized; and the optimization direction of the signal timing scheme is evaluated according to the difference values of the evaluation indexes of each phase of the intersection before and after optimization is performed. According to the method of the invention, the difference values of the evaluation indexes of different flow directions of entrance lanes before and after optimization is performed are calculated according to the actually measured values of the evaluation indexes before and after the signal timing scheme is optimized, and the flowing directions of the intersection are corresponding to signal phase schemes, and therefore, the different values of the evaluation indexes under different phases can be obtained, the optimization direction of each phase can be identified clearly, optimization step size can be obtained, and the signal timing scheme is optimized according to the optimization direction of each phase.

Description

technical field [0001] The invention relates to the technical field of traffic control, in particular to an evaluation method for a signal timing scheme at an intersection in a saturated state. Background technique [0002] In the city, the intersection is the throat of urban traffic, and the signal timing control, as a kind of intersection control method, is widely used in various intersections in the city. However, the signal timing scheme often has some problems in practical applications, resulting in low traffic efficiency at road intersections, so the signal timing scheme needs to be evaluated. [0003] However, there are obvious shortcomings in the existing evaluation methods of signal timing schemes: First, the current evaluation of the effect of signal timing schemes at intersections is mainly focused on giving the evaluation results after the implementation of the signal timing schemes, but cannot give signal The optimization direction of the timing scheme. Second...

AI Technical Summary

Problems solved by technology

However, the signal timing scheme often has some problems in practical applications, resulting in low traffic efficiency at road intersections, so it is necessary to evaluate the signal timing scheme

[0003] However, there are obvious shortcomings in the existing evaluation methods of signal timing schemes: First, the current evaluation of the effect of signal timing schemes at intersections is mainly focused on giving the evaluation results after the implementation of the signal timing schemes, but cannot give signal Optimizing Direction of Timing Scheme

Second, there are too many indicators selected in the existing signal timing scheme evaluation methods, and there are problems such as too many evaluation indicators, evaluation indicators intersecting each other, and important indicators cannot be highlighted.

Third, the existing evaluation methods for signal timing schemes do not take into account the traffic conditions at intersections, and the evaluation results are inaccurate

Images