Method for weighting, regulation and transition of coordination time matching scheme of traffic signals in N cycles

Abstract

The invention discloses a method for weighting, regulation and transition of a coordination time matching scheme of traffic signals in N cycles. The method comprises the following steps of: selecting a reference datum point provided by a crossing phase difference; reading the coordination time matching scheme of the traffic signals before and after the transition; determining positive and negative allowable regulating spaces in a signal cycle of each crossing transition scheme; estimating initial regulation quantity of each crossing phase difference; figuring out total positive and negative regulation amounts of the signal cycle of each crossing transition scheme; figuring out a maximum regulation proportion of the crossing phase difference; judging a minimum cycle number required for transition of the whole coordination control scheme; and determining the regulation amount of each transition cycle of each crossing. The method for weighting, regulation and transition in the N cycles, provided by the invention, can comprehensively consider different allowable value spaces of the transition signal cycle of each crossing and finally achieves quick smooth transition of the coordination control scheme by a plurality of transition signal cycles according to the minimum requirement of the maximum regulation proportion of the crossing phase difference.

Description

Technical field [0001] The invention relates to the coordinated control of traffic signals, in particular to a fast and smooth transition method of a traffic signal coordinated timing scheme. Background technique [0002] On urban roads, there may be significant differences in traffic flow at different times of the day. Therefore, signal control at intersections usually requires time-sharing or adaptive control. Coordinated control of signals on arterial roads and in the area needs to be based on different time periods. Select the corresponding signal coordination and timing plan for traffic conditions. When the intersection signal control plan, especially the coordinated timing plan, changes, it is necessary to determine the transition mode and method between the new and old control plan to achieve a reasonable transition between different timing plans in the front and rear periods, so as to ensure the flow of traffic. Smooth and continuous. The so-called signal control plan t...

AI Technical Summary

Problems solved by technology

[0006] However, the transition method of the above-mentioned coordinated traffic signal timing scheme has little involvement in the overall optimization of the phase difference adjustment amount of the intersection in the control area, and does not take into account the traffic demand of different intersections and the allowable adjustment space of the transition period during the transition period of the signal coordinated timing scheme. However, the rapidity and smoothness required for the transition of the old and new timing schemes have not yet been organically integrated, so it may be greatly limited in practical applications (especially in real-time signal control systems), and further research needs to be carried out in combination with actual needs. in-depth research

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