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Regional traffic dynamic regulation-control method and system

A technology for regulating systems and regions, applied in the field of urban traffic management and control, can solve problems affecting public interests and poor long-term implementation effects, and achieve the effects of alleviating urban traffic congestion, reasonably predicting traffic flow, and saving resources

Inactive Publication Date: 2015-11-04
吴建平 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] For this reason, the technical problem to be solved by the present invention lies in the problems that the existing methods of regulating and controlling the traffic volume in the central area of ​​the city affect the public interest, can only alleviate the traffic pressure in a short time, and have poor long-term execution effects, thus proposing a method based on regional A regional traffic dynamic control method suitable for urban central areas with boundary traffic feedback control and regional internal balance of key node loads as the core technology

Method used

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  • Regional traffic dynamic regulation-control method and system
  • Regional traffic dynamic regulation-control method and system
  • Regional traffic dynamic regulation-control method and system

Examples

Experimental program
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Effect test

Embodiment 1

[0052] In this embodiment, a method for dynamic regulation of regional traffic is provided. The flowchart is as figure 1 As shown, including the following steps:

[0053] (1) Select a number of intersections around the guarantee area as feedback gate control intersections.

[0054] For the point, line, and surface signal control system, scholars at home and abroad have done a lot of research. However, signal control based on points or lines can only improve local traffic conditions and maximize the benefits of a single intersection, but it cannot cope with the current regional large-scale traffic congestion. The existing surface control system can improve the overall operating efficiency of the road network under unsaturated traffic conditions, but it is not applicable under traffic congestion conditions. At present, there is no mature system control suitable for traffic congestion conditions at home and abroad. The program is put into use. A report by the US Federal Highway Mana...

Embodiment 2

[0091] In this embodiment, a specific regional traffic dynamic adjustment method is provided.

[0092] The first step is to select the feedback gate to control the intersection.

[0093] At present, some key areas in the urban road network obviously have related characteristics such as extended peak hours, increased congestion, and obvious tidal phenomena. Several intersections are selected around the study area as feedback gate control intersections. Through the signal control of the feedback gate, the goal of controlling the total traffic volume in the guarantee area is achieved. In the periphery of the guarantee area, the traffic outside the area is induced by setting up variable information signs, etc., to ensure that the restricted traffic volume is digested outside this area. Such as image 3 As shown, a schematic diagram of the position of the feedback gate is given.

[0094] The second step is to select key nodes and important road sections. The intersections in the guara...

Embodiment 3

[0123] In this embodiment, a regional traffic dynamic control system corresponding to the foregoing regional traffic dynamic adjustment method is provided, including:

[0124] Feedback unit: select a number of intersections around the guarantee area as feedback gate control intersections,

[0125] Sorting unit: sort the intersections in the guarantee area according to travel OD distribution and intersection connectivity, obtain key intersections, and set up vehicle detectors at key intersections;

[0126] Flow acquisition unit: acquire the traffic flow of each intersection;

[0127] Control unit: establish the regional macro basic map, calculate the network macro net flow in real time according to the traffic flow of the road section, start the control when the network macro net flow reaches the threshold, read the data of each feedback gate control intersection, and choose to enter the guaranteed area For large intersections, adjust the signal lights of the intersection, extend the r...

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Abstract

The invention provides a regional traffic dynamic regulation-control method, which comprises the steps of: selecting certain intersections to be set as feedback gate control intersections; ranking the intersections to obtain traffic flows of the intersections; establishing a regional macroscopic fundamental diagram; and regulating the intersections when a network macroscopic net flow reaches a threshold value. In the scheme provided by the invention, the traffic control and traffic guidance are combined to form a feedback type system, and dynamic flow interception is carried out on the periphery of a central region for controlling the traffic flow entering the central region by utilizing a macroscopic fundamental diagram function obtained through data of a detector, thereby reducing traffic pressure in important regions.

Description

Technical field [0001] The invention relates to the field of urban traffic management and control, in particular to a regional traffic dynamic control method based on a macro basic map. Background technique [0002] The central area of ​​a city refers to the part of the area where the social economy and land development activities are most intensive in the built-up area. Due to the functional characteristics of urban centers, the traffic in urban centers often presents prominent contradictions. Large-scale traffic congestion and traffic paralysis have become frequent problems faced by large and medium-sized urban centers, regardless of the frequency of occurrence or the The scope and speed of the impact, and the large-scale traffic congestion in the central area of ​​the city has an increasingly obvious overall impact on urban development. [0003] Usually, the control of traffic congestion can be achieved by increasing road capacity or reducing traffic demand. From a practical p...

Claims

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Application Information

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IPC IPC(8): G08G1/08
Inventor 吴建平杜怡曼贾宇涵郑少将
Owner 吴建平
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