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An Improved Method of Cellular Transmission Model Considering Intersection Signal Control

A signal control and transmission model technology, applied in the field of traffic simulation, can solve problems such as difficult to construct cells, and achieve high accuracy

Active Publication Date: 2021-07-20
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

However, the traditional cell transmission model requires that all cells must have the same length, and it is difficult to construct cells of the same length in complex urban road networks.

Method used

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  • An Improved Method of Cellular Transmission Model Considering Intersection Signal Control
  • An Improved Method of Cellular Transmission Model Considering Intersection Signal Control
  • An Improved Method of Cellular Transmission Model Considering Intersection Signal Control

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Embodiment Construction

[0041] The specific implementation of the present invention will be further described below in conjunction with accompanying drawings and examples, but the implementation and protection of the present invention are not limited thereto. Achieved with technology.

[0042] This example proposes an improved method for the cellular transmission model considering intersection signal control, and replaces the traditional number of vehicles with density as the traffic parameter describing the dynamic characteristics of the cell, making it possible for CTM to be applied to urban roads; Based on the cell length, a method of cell division of the intersection area is proposed according to the lane function and traffic signal; then the simulation granularity of CTM is refined to individual vehicles, and the vehicle transmission of the shunt connection is modified under the condition that the driving path is known Model, and formulate local first-in-first-out transmission rules; finally, dy...

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Abstract

The invention discloses a method for improving the cellular transmission model considering intersection signal control. The method includes: S1 cell length variable setting; S2 area cell division method design; S3 cell transmission model simulation granularity into individual vehicles; S4 signal control intersection cell transmission flow rate dynamic adjustment to realize intersection signal control The establishment of the cellular transport model in the environment. Compared with the traditional cellular transmission model, the present invention can be applied to urban roads with diversified road sections and signal-controlled intersections, and can reproduce the queuing formation and dissipation process of the traffic flow at the intersection. At the same time, compared with the traditional simulation model, This method can further improve the simulation speed and provide the manager with the simulation effect of the scheme in time, helping the manager to make a scientific and reasonable decision.

Description

technical field [0001] The invention relates to the technical field of traffic simulation, in particular to a method for improving a cell transmission model considering intersection signal control. Background technique [0002] At present, traffic congestion has become a common problem faced by large and medium-sized cities all over the world, and the losses caused by congestion remain high every year. Although a lot of research results have been obtained in the aspect of congestion control, its implementation effect is not ideal. Facts show that only by deeply understanding the nature of various traffic phenomena and exploring the internal mechanism of traffic flow evolution can scientific and effective control and management measures be put forward. Therefore, an improved method of the Cell Transmission Model (CTM) considering the intersection signal control is proposed, and the improved Cell Transmission Model is used to reproduce the queuing formation and dissipation pr...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/08G06F30/20
CPCG08G1/08G06F30/20
Inventor 林培群周楚昊雷永巍陈丽甜姚凯斌
Owner SOUTH CHINA UNIV OF TECH
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