Traffic signal timing method

A traffic signal and signal timing technology, which is applied in the direction of traffic signal control, can solve the problems of difficulty in adapting to complex traffic situations, fixed traffic signal timing, etc.

Active Publication Date: 2013-07-17
成都希盟科技有限公司
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  • Description
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method of traffic signal timing, through the mathematical modeling of linear programming, to realize the optimal processing of traffic signal

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Embodiment Construction

[0059]The basic idea of ​​the present invention is to realize the optimal processing of traffic signal control through the mathematical modeling of linear programming. Among them, the mathematical model of linear programming is mainly established through the relationship between the flow of key exit lanes and key entrance lanes. The key entrance lanes and exit lanes refer to the traffic lanes that dominate traffic control, that is, the lanes with the largest traffic flow. Through the GIS-T (Geographic Information System for Transportation), that is, the geographical information system, the key exit vehicle flow G and the key exit stranded traffic G waiting in the cycle are obtained, and the theoretical key exit can be calculated by the maximum traffic flow and T(xi ), through the following formula

[0060] T(xi)=G key+G waiting

[0061] For f(x i ) in each phase time x=(x1,x2,x3,x4) as constraints. where f(x i ) is the traffic flow passing through the theoretical key exit,...

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Abstract

The invention discloses a traffic signal timing method and belongs to the technical field of traffic signal control. The traffic signal timing method comprises S1, time interval division and phase selection of multi-stage signal timing; S2, calculation of signal cycle duration; S3, optimization of green time through linear programming; S4, adjustment and solving of green time of each phase; and S5, reality simulation by using the matrix laboratory (MATLAB). The traffic signal timing method has the advantages that modeling is performed on a single intersection through linear programming, so that the intersection reaches the maximum traffic flow, the traffic control technology is good in flexibly and adapted to the rapid change of the traffic flow, the cost is low, and roads are fully utilized finally.

Description

technical field [0001] The invention relates to a traffic signal timing method, which belongs to the technical field of traffic signal control. Background technique [0002] Traffic signal control refers to the use of traffic lights to command vehicles and pedestrians running on the road. The level intersections of urban roads are the problem of interruption of traffic flow, increased accidents, and serious delays, and are the bottleneck of urban transportation. Therefore, the traffic capacity of the intersection is lower than that of the road section. How to use traffic signal control to ensure the traffic safety of the intersection and give full play to the traffic efficiency of the intersection is very important. [0003] Linear programming is an important branch of operations research with earlier research, faster development, wider application and more mature methods. It is a mathematical method to assist people in scientific management. The mathematical theory and me...

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Application Information

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IPC IPC(8): G08G1/08
Inventor 赵立
Owner 成都希盟科技有限公司
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