A method and device for predicting the traffic state of the whole road network

A traffic state and prediction method technology, applied in the field of intelligent transportation, can solve problems such as the influence of spatiotemporal sparsity in prediction accuracy, and achieve the effect of improving prediction accuracy and reducing prediction deviation.

Active Publication Date: 2021-03-26
SHENZHEN URBAN TRANSPORT PLANNING CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • A method and device for predicting the traffic state of the whole road network
  • A method and device for predicting the traffic state of the whole road network
  • A method and device for predicting the traffic state of the whole road network

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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 method and device for predicting the traffic state of the whole road network, relating to the technical field of intelligent transportation, including: acquiring traffic flow data of detected road sections and historical travel OD matrix of the whole road network; determining a preset time interval according to the traffic flow data Detect the predicted traffic flow data of the road section, and determine the traffic flow deduction operation status of the entire road network within the preset time interval according to the historical travel OD matrix; determine the optimization model based on the predicted traffic flow data and the deduction traffic flow operation status; according to the optimization model and The preset constraint conditions determine the predicted OD, and carry out the state prediction of the whole road network. The invention overcomes the problem in the prior art that only a single type of traffic flow parameter can be predicted, and solves the problem of traffic state prediction for road sections without detection data in the road network. The present invention can also realize the mutual verification of prediction results of various traffic states such as OD, speed, and flow, reduce the prediction deviation of a single type of data, and improve the prediction accuracy of traffic states.

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 Patents(China)
IPC IPC(8): G08G1/01G08G1/052G08G1/065G06F30/20G06Q10/04G06Q50/30G06F111/04
CPCG06Q10/04G06Q50/30G08G1/0129G08G1/052G08G1/065G06F30/20G06F2111/04
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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