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Whole road network traffic state prediction method and device

A technology of traffic status and prediction method, which is applied in the field of intelligent transportation, can solve problems such as the influence of space-time sparsity on prediction accuracy, and achieve the effect of improving prediction accuracy and reducing prediction deviation

Active Publication Date: 2021-01-05
SHENZHEN URBAN TRANSPORT PLANNING CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the data-driven method has a strong dependence on the deployment conditions of the detection equipment, and problems such as equipment type, deployment location, and spatiotemporal sparsity will affect the prediction accuracy

Method used

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  • Whole road network traffic state prediction method and device
  • Whole road network traffic state prediction method and device
  • Whole road network traffic state prediction method and device

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Embodiment Construction

[0039] Embodiments according to the present invention will be described in detail below with reference to the drawings. When the description refers to the drawings, the same reference numerals in different drawings indicate the same or similar elements unless otherwise indicated. It should be noted that the implementations described in the following exemplary embodiments do not represent all implementations of the present invention. They are merely examples of apparatuses and methods consistent with certain aspects of the present disclosure as recited in the claims, and the scope of the present invention is not limited thereto. On the premise of no contradiction, the features in the various embodiments of the present invention can be combined with each other.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated techn...

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Abstract

The invention provides a whole road network traffic state prediction method and device, and relates to the technical field of intelligent traffic, and the method comprises the steps: obtaining the traffic flow data of a detection road section and a historical travel OD matrix of a whole road network; determining predicted traffic flow data of the detection road section in a preset time interval according to the traffic flow data, and determining a traffic flow deduction operation state of the whole road network in the preset time interval according to the historical travel OD matrix; determining an optimization model according to the predicted traffic flow data and the deduced traffic flow operation state; and determining a prediction OD according to the optimization model and a preset constraint condition, and performing state prediction of the whole road network. According to the invention, the problem that only a single type of traffic flow parameters can be predicted in the prior art is overcome, and the traffic state prediction problem of a road section without detection data in the road network is solved. In addition, mutual verification of prediction results of various traffic states such as OD, speed and flow can be realized, prediction deviation of a single type of data is reduced, and prediction accuracy of the traffic states is improved.

Description

technical field [0001] The present invention relates to the technical field of intelligent transportation, in particular to a method and device for predicting the traffic state of the whole road network. Background technique [0002] With the continuous development of urban economy and the rapid increase of private cars, the traditional transportation mode has encountered more and more problems in modern transportation, such as increased traffic congestion, serious air pollution, frequent traffic accidents, etc. And it has become unrealistic to alleviate the huge traffic pressure by continuously building roads. In order to deal with these thorny problems, Intelligent Transportation Systems (ITS for short) were introduced into dynamic traffic management and developed rapidly. Combining information technology and traffic theory, intelligent traffic systems are used in various aspects such as road traffic control and traffic guidance. ITS has shown great potential in alleviat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01G08G1/052G08G1/065G06F30/20G06Q10/04G06Q50/30G06F111/04
CPCG08G1/0129G08G1/052G08G1/065G06F30/20G06Q10/04G06F2111/04G06Q50/40
Inventor 张晓春陈振武周勇罗佳晨吴若乾
Owner SHENZHEN URBAN TRANSPORT PLANNING CENT
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