A Phase-Signal Synthetic Optimization Method of Bidirectional Green Wave on Trunk Lines

Abstract

The present invention provides a phase-signal comprehensive optimization method for two-way green waves on trunk lines, comprising the following steps: establishing a phase-signal comprehensive optimization model aiming at increasing the width of green waves and reducing the average vehicle delay, the model is based on the intersection of trunk lines The three major factors of channelization mode, intersection spacing and traffic flow structure are associated with the arterial traffic organization, phase scheme and signal scheme, and a single-group traffic structure optimization method and a multi-group traffic structure optimization method are given. The phase scheme sensitivity and signal Parameter robustness selects the best phase-signal control scheme, and finally updates the control parameters for the traffic structure whose evaluation value does not meet the β measure, and regroups; the urban arterial road coordination control optimization method based on the multi-period control scheme in the present invention fully considers multiple Group traffic structure, traffic organization, phase plan and pedestrian crossing factors, accurately handle traffic demand at each time period, improve operating efficiency and reduce traffic costs.

Description

technical field [0001] The present invention relates to the technical field of traffic control and management, and more specifically, relates to an optimization method for coordinated control of urban arterial roads based on a multi-period control scheme. Background technique [0002] Urban arterial lines are the main arteries of urban road traffic networks, with the characteristics of long mileage, large service traffic volume, and high speed. [0003] In terms of coordinated control, some large and medium-sized cities in my country have also tried, and have introduced advanced intelligent traffic control management systems, such as Beijing, Chengdu and Dalian introduced the British SCOOT system; Shenyang, Shanghai, Guangzhou introduced the Australian SCATS system; Shenzhen Introduce Japan's KYOSAN system, etc. However, the above-mentioned coordinated control systems are all based on adaptive control methods, which are highly dependent on detection coils and their hardware ...

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Problems solved by technology

However, the above coordinated control systems are all based on adaptive control methods, which are highly dependent on detection coils and their hardware facilities

Considering that the failure rate of the coils used to detect vehicles in major cities in my country is as high as 30%, it is easy to cause inaccurate real-time traffic data, which is not conducive to the coordinated control system to formulate appropriate traffic control strategies.

In addition, the adaptive control method may cause large disturbances to the traffic flow due to its frequent switching strategies, and the effect on improving traffic conditions may be "counterproductive". Therefore, the above systems are not universally applicable to the coordinated control of urban arterial roads in my country

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