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Road network bearing capacity estimation method based on macroscopic fundamental diagram

A technology of macroscopic basic diagram and bearing capacity, applied in the field of vehicle traffic

Active Publication Date: 2021-11-02
南京泛析交通科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that speeding up road construction is not the fundamental solution to road congestion, but can only alleviate road congestion in the short term.

Method used

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  • Road network bearing capacity estimation method based on macroscopic fundamental diagram
  • Road network bearing capacity estimation method based on macroscopic fundamental diagram
  • Road network bearing capacity estimation method based on macroscopic fundamental diagram

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Embodiment Construction

[0071] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0072] see Figure 1-8 , in an embodiment of the present invention, a method for estimating the carrying capacity of a road network based on a macro basic graph, .

[0073] A method for estimating the carrying capacity of a road network based on a macro basic graph, including

[0074] S1: Select a road network with a large traffic flow, build a road network topology, collect the original data of the vehicle license plate in the road network area, preprocess t...

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Abstract

The invention discloses a road network bearing capacity estimation method based on a macroscopic fundamental diagram, which comprises the following steps of: selecting a road network with relatively large traffic flow, constructing a road network topology, collecting original data of vehicle license plates in a road network region, preprocessing the collected original license plate data, carrying out statistical analysis on the processed data, conducting trajectory reconstruction after travel chain division is carried out on vehicles, bearing capacities of different areas of a road network are analyzed, a road network bearing capacity estimation model based on a macroscopic basic diagram is constructed, after vehicle density and flow analysis is carried out on the whole road network, road network areas are further refined, vehicle density and flow analysis is carried out for the second time, and a corresponding scheme for improving the road network efficiency for each road network position is formulated according to a bearing capacity estimation data result, thereby providing a decision basis for relieving the urban road congestion problem.

Description

technical field [0001] The invention relates to the field of vehicle traffic, in particular to a method for estimating the bearing capacity of a road network based on a macro basic graph. Background technique [0002] The carrying capacity of the urban road network refers to the maximum allowable capacity of the urban road network under the constraints of limited road resources and the environment, within a certain space-time range, using traffic management technology, and satisfying the appropriate traffic service level. Motor vehicle travel volume. Improving the carrying capacity of the city's road network can effectively alleviate the problem of urban traffic congestion, thereby improving the travel efficiency and quality of residents. How to accurately estimate the carrying capacity of urban road networks has been extensively and profoundly studied by domestic and foreign scholars. [0003] With the continuous increase of the number of motor vehicles and the rapid incr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01G08G1/017G08G1/065
CPCG08G1/0125G08G1/017G08G1/065G08G1/0133
Inventor 聂庆慧陆佳炜
Owner 南京泛析交通科技有限公司