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Regional bottleneck control method based on macroscopic base map

A macroscopic basic map and regional technology, applied in the traffic control system of road vehicles, traffic control system, traffic signal control, etc., can solve problems such as little effect, regional congestion, and insufficient public transportation, and achieve the goal of alleviating traffic congestion Effect

Active Publication Date: 2017-07-18
ZHEJIANG UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

General traffic managers alleviate urban traffic congestion by changing the way people travel, but because most urban public transport is not perfect, this method has little effect
At present, the reason for regional congestion is that urban traffic attraction points are relatively concentrated, and peripheral vehicles enter the central area of ​​the city through trunk roads and expressways, causing congestion in this area

Method used

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  • Regional bottleneck control method based on macroscopic base map
  • Regional bottleneck control method based on macroscopic base map
  • Regional bottleneck control method based on macroscopic base map

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Experimental program
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Embodiment Construction

[0054] The present invention will be described in detail below in conjunction with the drawings. The specific steps of the present invention are as follows:

[0055] 1. According to the urban land use and traffic status, determine the urban congested area and boundary control intersections, generally commercial centers and other areas with high traffic demand, see figure 1 .

[0056] 2. Build a macro basic map

[0057] (1) Collect data

[0058] The basic parameters of the traffic flow of the road section in the collection area: the traffic flow q of the i-th lane of road section j in the area at the t-th information sampling interval ij , Time share o ij .

[0059] (2) Calculate the traffic state parameters of different sampling intervals for each road section

[0060] For the traffic state parameter flow and density of section j in the area, respectively, the weighted average of the flow and density of all lanes to the flow is calculated as follows:

[0061]

[0062]

[0063]

[0064] (...

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Abstract

The invention provides a regional bottleneck control method based on a macroscopic base map. The method comprises the steps: determining a control region and boundary control points according to urban land utilization; constructing the macroscopic base map through road segment section data; determining the regional congestion condition based on the macroscopic base map, and triggering a regional bottleneck control if a state index exceeds a preset threshold value; carrying out the feedback control according to a region state and an optimal state in the macroscopic base map, adjusting the incoming traffic flow of the region, and further determining the green ratio of a control phase. The method aims at alleviating the traffic congestion of an urban region, and improves the traffic efficiency of a key region or a sensitive region of a city through reducing the regional demands.

Description

Technical field [0001] The invention relates to a regional traffic control method, in particular to a method for judging the state of a region by using a macro basic map and using signals to control the traffic demand for entering an urban area. Background technique [0002] Urban traffic problems are becoming more and more serious, and regional traffic congestion often occurs in cities. The root cause is that traffic demand exceeds traffic supply. Generally, traffic managers can alleviate urban traffic congestion by changing the way people travel, but because most urban public transportation is not perfect, this method has little effect. At present, the cause of regional congestion is that urban traffic attraction points are relatively concentrated, and peripheral vehicles enter the central area of ​​the city through main roads and expressways, causing congestion in this area. Summary of the invention [0003] The main purpose of the present invention is to alleviate the problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/08G08G1/01
CPCG08G1/0145G08G1/08
Inventor 金盛沈莉潇徐亮王杰刘美岐龚越
Owner ZHEJIANG UNIV
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