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Method and device for predicting road conditions

A technology of road conditions and road links, which is applied in the traffic control system of road vehicles, the arrangement of variable traffic instructions, instruments, etc., can solve the problems of low reliability, few real-time data sample points, and easy misleading, so as to achieve reliable prediction of road conditions Effect

Active Publication Date: 2010-04-14
CENNAVI TECH
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  • Abstract
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Problems solved by technology

[0005] In the process of realizing the present invention, the inventors found that this method has at least the following problems: due to the lack of real-time data sample points and lack of stability, the reliability is low and it is easy to mislead
[0007] In the process of realizing the present invention, the inventor found that this method has at least the following problems: due to the lack of updating of historical data, it cannot reflect unexpected road conditions

Method used

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  • Method and device for predicting road conditions
  • Method and device for predicting road conditions

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Embodiment Construction

[0025] In order to solve the problem of low reliability and easy misleading when using real-time data to predict road conditions in the prior art, and the failure to reflect unexpected road conditions when using historical data to predict road conditions, embodiments of the present invention provide a method and device for predicting road conditions.

[0026] Such as figure 1 As shown, the method for predicting road conditions provided by the embodiments of the present invention includes:

[0027] Step 101, obtaining the real-time vehicle speed data of the road link;

[0028] Step 102, obtaining a typical historical vehicle speed pattern curve with the same time period as the real-time vehicle speed data time period of the road link from the pre-established typical historical vehicle speed pattern curve set;

[0029] Step 103, perform road condition prediction according to a typical historical vehicle speed pattern curve and a real-time pattern curve in the same time period a...

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Abstract

The invention discloses a method and a device for predicting road conditions, relating to the field of urban traffic road condition information processing application. The invention can solve the problems that low reliability and easy misdirection are caused if real-time data are used to predict road conditions and accident road conditions can not be reflected if historical data are used for predicting road conditions in the prior art. The invention adopts the technical scheme as follows: the method comprises the following steps: carrying out similarity matching on a real-time mode curve and a historical mode curve to obtain a matching historical mode curve; calculating the weighted average of the sampling point speed of the matching historical mode curve at the next moment and the sampling point speed of the real-time mode curve at the current moment. The technical scheme of the embodiment of the invention is suitable for road condition predicting systems to predict road conditions.

Description

technical field [0001] The invention relates to the field of processing and application of urban road traffic information, in particular to a method and device for predicting road conditions. Background technique [0002] Today, with the rapid development of urban traffic, urban roads are becoming more and more complex, and road condition prediction technology has attracted more and more attention. The road condition prediction technology can reasonably calculate the road conditions in the next 15 minutes through the currently known road condition data, so as to intelligently and dynamically plan the route and guide people's travel routes. [0003] Currently, existing technologies can provide two methods for predicting road conditions: [0004] One is based on real-time floating car data. This method processes the collected real-time floating car data and outputs the real-time model curve data as the predicted result. [0005] In the process of realizing the present invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/00G08G1/09
Inventor 王涛涛
Owner CENNAVI TECH
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