Intersection signal design method based on demand-supply double fluctuation

Abstract

The invention discloses an intersection signal design method based on demand-supply double fluctuation, and belongs to the field of traffic management and control. The method aims to solve the problem that in the prior art, during dynamic signal control design, the influence of traffic supply and demand dual fluctuation on intersection signal control is not comprehensively considered, and a traffic signal control model established only by considering real-time change of demands has limitation. The intersection dynamic signal control scheme is designed under the condition of considering the dual influences of traffic flow change and intersection traffic capacity fluctuation at the same time, the signal control scheme better meeting the actual conditions of the intersection is obtained, more efficient and stable operation of the intersection is facilitated, time and space resources are saved, and congestion is relieved.

Description

technical field [0001] The invention relates to the field of traffic management and control, in particular to a design method for intersection signals based on demand-supply double fluctuations. Background technique [0002] In recent years, my country's economic and technological level has developed rapidly, and the level of urbanization has continued to increase. As the most basic urban operation, urban transportation has been comprehensively improved. The great progress of urban transportation has greatly improved people's daily activities, social economy and other aspects. However, there are advantages and disadvantages in everything. The rapid development of urban traffic and the increasing number of urban motor vehicles make urban traffic more congested. According to statistics, the number of traffic congestion in Chinese cities during peak hours is about 66.7%. The city is more serious, and the traffic in some parts of the city is even at or close to paralysis, especi...

AI Technical Summary

Problems solved by technology

[0004]1) The fixed signal control scheme has relatively large design limitations and cannot adapt to the rules and demands of traffic flow changing over time, which is likely to cause waste of resources and congestion

[0005]2) Although the time-segmented signal control scheme design can meet the requirements of dynamic adjustment signal control at intersections brought about by changes in traffic flow over time, the signal adjustment is too rough , not refined enough, macroscopically can bring about the order optimization of intersection operation, but in the context of rapidly changing traffic flow information, it will still cause local severe congestion due to continuous changes in traffic flow

The constant change of traffic flow is used by everyone to carry out signal control design. However, it is undeniable that the traffic capacity of the intersection as the supply side is also constantly fluctuating in practice, which is often ignored in signal control design.

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