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Method of real-timely predicting short time traffic flow of express way

A technology for short-term traffic flow and real-time forecasting, which is applied in forecasting, data processing applications, calculations, etc., and can solve problems such as uneven distribution of urban traffic resources

Inactive Publication Date: 2013-05-22
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still impossible to solve the problem of uneven distribution of urban traffic resources during peak hours. Especially when emergency traffic incidents occur, traffic managers need to choose a plan as soon as possible. The simulation of the situation predicts the processing effect of various plans after a period of time, and provides a scientific basis for the decision-making of managers

Method used

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  • Method of real-timely predicting short time traffic flow of express way
  • Method of real-timely predicting short time traffic flow of express way
  • Method of real-timely predicting short time traffic flow of express way

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Embodiment Construction

[0026] Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0027] figure 1 It shows a flow chart of expressway traffic flow according to the first embodiment of the present invention. Specifically, this figure shows four steps. First, step S101 is to collect the traffic data of the road section to be simulated in real time. Specifically, the traffic data of the road section to be simulated is preferably collected by coils arranged on the road section to be simulated. Specifically, those skilled in the art understand that the setting of road section detection points generally has the following four principles: OD coverage principle; maximum flow cutoff principle; maximum flow ratio principle; road section independence principle; OD coverage principle is necessary for OD inversion condition, so it must be satisfied. The p...

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Abstract

The invention relates to a method of real-timely predicting short time traffic flow of an express way. The method is characterized by comprising the steps of real-timely collecting traffic data of a road segment to be simulated; selecting, according to the traffic data, an automobile generating model to distribute automobiles onto the road segment to be simulated; calculating an outside dimension (OD) matrix according to the traffic data and distributing the traffic outgoing amount of the road segment to be simulated according to the OD matrix; and predicting moving data of the road segment to be simulated according to the traffic outgoing amount and an automobile behavior model based on the traffic data.

Description

technical field [0001] The invention relates to the field of intelligent traffic simulation and prediction. Background technique [0002] Timely and accurate prediction of traffic flow conditions in a short period of time in the future (generally believed to be no more than 15 minutes, or even less than 5 minutes) is an important prerequisite for formulating correct induction and control measures. Transportation System, ITS) project development research basic requirements. Since the 1960s, people began to apply mature forecasting models in other fields to the field of short-term traffic flow forecasting, and developed a variety of forecasting models and methods. The earlier prediction methods mainly include: autoregressive model (AR), moving average model (MA), autoregressive moving average model (ARMA), historical average model (HA) and Box-Cox method and so on. With the gradual deepening of research in this field, a number of more complex and more accurate prediction met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04
Inventor 马云龙王坚
Owner TONGJI UNIV