Method for controlling demands of traffics entering city regions by using signal lamps

A technology of signal light control and traffic demand, applied in traffic control systems, traffic control systems of road vehicles, instruments, etc., can solve problems such as backward construction of supporting traffic facilities, aggravated main road congestion, and no significant results for travelers, etc. Achieve the effect of improving traffic operation efficiency, reducing dependence, and alleviating regional traffic congestion

Inactive Publication Date: 2013-02-20
ZHEJIANG UNIV
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  • Abstract
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Problems solved by technology

However, due to the backward construction of supporting transportation facilities, no significant effect has been achieved in changing the behavior of travelers
At present, the reason for regional congestion in terms of demand is mainly that the peripheral traffi

Method used

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  • Method for controlling demands of traffics entering city regions by using signal lamps
  • Method for controlling demands of traffics entering city regions by using signal lamps
  • Method for controlling demands of traffics entering city regions by using signal lamps

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Embodiment Construction

[0026] According to the characteristics of regional traffic demand, the present invention adopts two levels of demand control ideas:

[0027] (I) Level 1 Traffic Demand Control. Control the traffic demand from the outside of the area to the inside of the area;

[0028] (II) Secondary traffic demand control. Control traffic demand on secondary arterial roads and branch roads entering main roads;

[0029] The present invention comprises the following steps:

[0030] (1) Set the main intersections in the area, judge the congestion situation through the detector, if the status index reaches the preset threshold, trigger the first-level demand control and the second-level demand control;

[0031] (2) According to the topological structure of the road network, the first-level demand-controlled intersection and the second-level demand-controlled intersection are screened out;

[0032] (3) Determine the appropriate signal period according to the traffic intensity of each intersect...

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Abstract

The invention relates to traffic signal control method and aims at providing a method for controlling demands of traffics entering city regions by using signal lamps. The method comprises screening out first-level demand control road crosses and second-level control road crosses according to a road network topological structure; determining respective appropriate signal cycles according to traffic strength of each road cross at area boundaries; judging crowding situations of each road section through a detector, and sequentially triggering requests for first-level demand control and second-level control road if state indexes achieve a preset threshold value; and determining allowing inflow rate of each road cross according to control requirements, and further determining demand control phase split of each road cross. The method needs fewer data, only needs flow data and occupancy data, is not strong in road network topological structure dependency, is applicable to road networks of any topological structures, enables inflow volume from the area boundaries to the inside of the area to be equal to the traffics borne by the inside of the area, remits traffic jam of the area and improves traffic circulation efficiency.

Description

technical field [0001] The invention relates to a traffic signal control method, in particular to a method for controlling traffic demand for entering urban areas by using signal lights. Background technique [0002] Traffic demand exceeds traffic supply is the root cause of traffic congestion. Generally, traffic congestion is alleviated and traffic operation efficiency is improved by changing people's travel methods and travel time. However, due to the backward construction of supporting transportation facilities, no significant effect has been achieved in changing the behavior of travelers. At present, the reason for regional congestion in terms of demand is mainly that the peripheral traffic demand enters the central city through the main road and expressway, and the traffic demand of the secondary trunk road and branch road enters the main road through the intersection connected with the main road, which aggravates the congestion of the main road . Contents of the inv...

Claims

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Application Information

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IPC IPC(8): G08G1/081
Inventor 祁宏生王殿海叶盈韦薇马东方金盛陈鹏
Owner ZHEJIANG UNIV
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