Crossing signal phase scheme green light duration allocation method

Abstract

The invention provides a crossing signal phase scheme green light duration allocation method. Based on traffic flow data of lanes and saturated time headway, integrated computation is conducted to obtain the lowest green light duration requirements of driving directions of a crossing, and based on signal phase schemes, optimal solutions of the lowest green light duration requirements of phases areobtained. The method aims at the problem of allocation of green light duration of various phases of the signal schemes, based on the traffic flow data obtained by crossing detector equipment and saturated time headway information, the periodic lowest green light duration requirements of the lanes of an approach of unit time slots are calculated, according to canalization and light set information, the lowest green light duration requirements of the driving directions are determined, and the shortest green light duration of the signal phases are further solved according to the corresponding signal phase schemes in the time slots, so that a fixed signal phase scheme is allocated, a supporting foundation is laid for allocation of a sensing signal phase scheme, the signal scheme allocation efficiency is effectively improved, and crossing traffic jam conditions are alleviated.

Description

technical field [0001] The invention relates to a method for configuring the green light duration of an intersection signal phase scheme. Background technique [0002] Traffic signal control achieves the purpose of time separation and control of traffic flow through traffic lights, and generally requires the design of signal phase and timing. The traditional signal phase scheme determines the timing signal phase scheme based on the flow direction and volume of the traffic arriving at each entrance at the intersection. However, with the rapid development of urban traffic, the traffic volume changes continuously in a day, and the timing scheme leads to constant parking times and delays. Increase, so time-segmented traffic signal schemes and traffic sensor control applications were born. [0003] At this stage, the configuration of the traffic signal phase scheme is based on the traffic flow data to configure 5-6 sets of timing or inductive signal schemes and schedule them acc...

AI Technical Summary

Problems solved by technology

[0005] To sum up, it can be seen that there have been many studies on the traffic signal scheme and the green light duration of the signal phase in the cycle, but most of the existing research is aimed at the real-time traffic flow at the current stage to optimize and adjust the green light duration of the next cycle, while Based on historical traffic flow data and saturated headway data, there are few studies on the configuration of the shortest green light duration in a fixed period. Although the patent CN 201611023279.0 allocates the phase duration according to the green hour demand, the allocation method is only based on the traffic demand ratio and fails to refine the demand. Lane

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