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Road network threshold control based on macroscopic fundamental diagram

A technology of macroscopic basic diagram and threshold control, which is applied in the control of traffic signals and other directions, and can solve problems such as the inability of signal lights, intersections and road sections to meet the needs of traffic operation.

Inactive Publication Date: 2017-07-14
GUANGDONG UNIV OF TECH
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Problems solved by technology

For the current road network system, the research on traditional signal lights, intersections and road sections can no longer meet the needs of traffic operation. Therefore, it is necessary to study the macroscopic fundamental diagram (MFD) model of urban regional road network. Control is the solution to the above problems

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  • Road network threshold control based on macroscopic fundamental diagram
  • Road network threshold control based on macroscopic fundamental diagram
  • Road network threshold control based on macroscopic fundamental diagram

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Embodiment Construction

[0012] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0013] MFD (that is, the basic map of macroscopic traffic flow, or flow-density relationship diagram), MFD is through the study of the relationship between flow and density, and found that there is an inevitable relationship between the two in the road network, and flow and density will form a parabola relational graph. It is a basic attribute of the road network, which can describe the general relationship between the number of moving vehicles in the network and the network operation level, and establish the relationship between the flow and traffic volume in the road network. According to the MFD theory, the macroscopic basic map can be obtained through the traffic data obtained by the road detector to achieve a macroscopic description of the road network, and can be u...

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Abstract

With the rapid development of urban motor vehicles, urban traffic is facing an increasingly serious traffic jam problem. Traffic congestion has become a "chronic disease" of major cities in China, which restricts the development of cities and affects the life and work of residents. For the problem of regional traffic congestion, the traffic congestion problem must be analyzed from the perspective of the entire road network from an overall situation. For the current road network system, the traditional study on signal lights, crossroads and road sections has failed to meet the needs of circulation of traffic. Therefore, the method to solve the above problem is to study the model control of a macroscopic fundamental diagram (MFD) of an urban regional road network. The invention discloses road network threshold control based on the macroscopic fundamental diagram. The main contents include MFD and its application research, road network stability analysis and threshold control method.

Description

technical field [0001] The invention relates to road network threshold control, in particular to a road network threshold control based on a macro basic graph. Background technique [0002] With the rapid development of motor vehicles in today's cities, urban traffic is facing increasingly serious traffic congestion problems. Traffic congestion has become a "stubborn disease" in major cities in my country. It restricts the development of cities and affects the lives and work of residents. my country's urban traffic management technology started late, lagging behind western developed countries. The awareness and technology for urban traffic control management and traffic safety management are relatively weak, and the number of cars has far exceeded the carrying capacity of urban traffic, and the road system is gradually becoming saturated. , How to solve traffic jams and improve traffic operation is increasingly prominent. Therefore, for the regional traffic congestion proble...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/08
CPCG08G1/08
Inventor 吕耀辉傅惠
Owner GUANGDONG UNIV OF TECH
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