A traffic adaptive control method and device

Abstract

An adaptive traffic control method and device, the method comprising: acquiring a first-type traffic status parameter corresponding to the traffic status of the first straight-ahead phase in the green wave direction of a current intersection (11); acquiring a second-type traffic status parameter corresponding to the traffic status of the first straight-ahead phase in the green wave direction of an upstream intersection (12); determining the first green light turn-on time of the first straight-ahead phase of the current intersection according to the first-type traffic status parameter and the second-type traffic status parameter (13); determining the first green light duration corresponding to the first straight-ahead phase of the current intersection according to the first-type traffic status parameter and the second-type traffic status parameter (14); and turning on the green light at the first straight phase of the current intersection at the first green light turn-on time, and controlling the green light duration to be the first green light duration (15). The method adjusts the green light turn-on time and the duration of a signal light, enabling as many vehicles as possible to pass through an intersection with multiple signal lights in the green wave band without stopping.

Description

technical field [0001] The invention relates to the field of traffic signal control, in particular to a traffic adaptive control method and device. Background technique [0002] Urban traffic adaptive control systems have been introduced more and more into China's urban signal light control systems, among which SCOOT in the UK and SCATS in Australia are relatively mature technologies. However, the system currently has two important problems: the poor real-time optimization capability of the phase difference and the solidification of alternatives, which limit the application of the adaptive control system in the green-wave coordinated control of trunk lines. Some scholars have proposed some solutions. [0003] A relatively simple implementation method is to release information to guide the driver's driving behavior. When it is detected that the vehicle can pass through the downstream intersection at the current speed, a stable driving speed is recommended to the driver; when...

AI Technical Summary

Problems solved by technology

However, there are currently two important problems in this system: the poor real-time optimization ability of phase difference and the solidification of alternatives, which limit the application of this adaptive control system in the green wave coordinated control of trunk lines

This method can simplify the design of the phase difference in the direction of the green wave, but due to the inconsistency of the traffic flow characteristics at each intersection, it will cause some waste of green light time, which is not conducive to improving the overall capacity of vehicles in all entrance directions at the intersection

The green wave control with the whole green wave belt as the research target usually requires each intersection and the central control machine to communicate with each other, and finally send the configuration parameters back to the signal light group. The whole process needs to transmit a large number of data, and the overall optimization method based on the original data has a large amount of calculation, which is not conducive to the realization of real-time green wave control

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