Arterial road green wave control method

A technology of urban arterial road and green wave control, applied in the direction of controlling traffic signals, etc., can solve the problems of aggravating traffic congestion and long delay time at intersections, and achieve the effect of reducing traffic congestion, reducing total delay time and improving traffic smoothness rate.

CN104240523AInactive Publication Date: 2014-12-24UNIV OF SHANGHAI FOR SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-12-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an arterial road green wave control method. The arterial road green wave control method is characterized by including the steps: building an arterial road dynamic green wave control model, and optimizing total delay time of vehicles passing through each road crossing by taking green time ratios of arterial road crossings under signal linkage control as variables; selecting multiple road crossings under signal linkage control and detecting real-time traffic flow of road segments among the arterial road crossings; solving the model according to the real-time traffic flow to obtain the green time ratio, shortest in total delay time, of each road crossing; making real-time timing plans according to the green time ratio of each road crossing. Traffic smooth rate can be increased by the arterial road green wave control method.
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Description

technical field

[0001] The invention relates to a method for controlling green waves on urban arterial roads, belonging to the field of coordinated control of urban arterial roads. Background technique

[0002] With the development of society and economy, there are more and more means of transportation in the city. In the urban road network, traffic lights are set at almost every intersection. Since the intersections are close to each other, when the single-point signal control is carried out separately, the vehicles often stop and drive because they often encounter red lights, which leads to traffic problems such as low efficiency of road network operation, aggravated environmental pollution, and energy waste. In order to reduce the parking time of vehicles at various intersections, especially to enable the vehicles on the main road to run smoothly, it is considered to unify a group of adjacent traffic signals on one main road for coordinated control, so as to reduce traffi...

Examples

Embodiment Construction

[0034] The method for controlling green waves on urban arterial roads involved in the present invention will be described in detail below with reference to the accompanying drawings.

[0035] figure 1 It is the flow chart of the dynamic green wave control of the urban main road in the embodiment of the present invention.

[0036] Such as figure 1 As shown, the green wave control method of the main urban road adopted in the present embodiment comprises the following steps:

[0037] Step S-1: Establish a dynamic green wave control model for urban arterial roads

[0038] Step S-1-1: Vehicle trip segment analysis

[0039] The travel time of a vehicle running on an urban road is determined by two parts: the travel length of the road segment and the driving speed of the vehicle on the urban road segment. Select a section a of the urban arterial road to analyze the traffic flow. It can be seen that the travel time of vehicles on the road section can be divided into two parts: th...