Traffic signal control scheme time period division method considering intersection flow unbalance condition

Abstract

The invention provides a traffic signal control scheme time period division method considering an intersection flow unbalance condition. The method comprises the steps: obtaining intersection channelization information, traffic flow data and traffic signal control scheme basic information; drawing a traffic flow all-day difference value change trend chart; analyzing and integrating traffic flow data, and preliminarily dividing time periods by adopting a Fisher optimal segmentation method; adding an overlapping phase based on the fluctuation condition of the traffic flow difference value obtained after normalization processing, determining a signal scheme phase sequence in the control time period, and superposing the signal scheme phase sequence to the divided scheme time period to obtain an optimized and adjusted signal control time period; solving the traffic signal scheme in each time period, and optimizing the control time period and the signal scheme again based on the traffic capacity to obtain a final time period division and signal scheme. According to the method, the problem of traffic flow imbalance is considered while time division is carried out, phase sequence configuration is carried out by taking the overlapping phase as a means, simultaneous intelligent optimization configuration of the time, the phase sequence and the traffic signal phase is realized, and the traffic management and control efficiency is effectively improved.

Description

technical field [0001] The invention relates to a method for dividing time periods of a traffic signal control scheme considering the unbalanced condition of crossing flow. Background technique [0002] With the increase in the number of motor vehicles and the aggravation of traffic congestion, the uneven traffic flow in the morning and evening peaks and flat peaks has attracted the attention and attention of traffic control professionals. Therefore, time-based control of traffic signals at intersections has become a relatively common traffic signal at present. One of the means of control. [0003] The traditional division of traffic signal control periods is divided by professionals based on experience and historical traffic flow changes, and the daily control periods are consistent, which easily leads to waste of green light time and low efficiency. With the development of data algorithms such as artificial intelligence, a variety of data mining and analysis methods are a...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a traffic signal control scheme period division method that considers the unbalanced traffic situation at intersections, so as to solve the problem of excessively long green lights, wasteful green lights, or overshort intersection congestion in traditional schemes that exist in the prior art. question

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