A travel time prediction method for urban dynamic routes

A travel time and dynamic path technology, which is used in traffic flow detection, traffic control systems for road vehicles, instruments, etc., can solve the problem of low prediction accuracy of travel time prediction methods.

Inactive Publication Date: 2016-09-28
HOHAI UNIV
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Problems solved by technology

[0003] The prediction accuracy of the existing urban route travel time prediction methods is not high. If the existing prediction methods can be integrated to form traffic rules, various traffic characteristics are considered in the prediction process, and the travel time of various traffic events can be dynamically adjusted. The weight of influence will greatly improve the accuracy of vehicle travel time prediction

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  • A travel time prediction method for urban dynamic routes

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[0074] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0075] The urban path travel time prediction method based on floating car data of the present invention, such as figure 1 shown, including the following steps:

[0076] Step 1: Create historical traffic patterns and historical traffic rules based on floating car data by using data mining methods;

[0077] In order to obtain the traffic mode and traffic rules for travel time prediction, the definitions of space-time dimension, road network and traffic mode need to be given, respectively:

[0078] 1) Define the space-time dimension. The time dimension is divided into "year", "season", "month", "week", "hour", and "half hour"; the space dimension is divided into link chains.

[0079] Then the ro...

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Abstract

The invention discloses an urban dynamic route travel time predication method. The method comprises the steps of analyzing historical traffic data; extracting traffic modes from the historical traffic data, including the correlation of segment links; acquiring a historical information based recommended route on the basis of input starting point and ending point and the travel time; inputting the real-time traffic event when driving a vehicle; predicating again on the basis of a new staring point; and modifying the recommended route, so as to apply the predication method to a real-time dynamic navigation system. The urban dynamic route travel time predication method has the advantages that the historical urban traffic modes are effectively integrated into account, so as to effectively predicate the urban dynamic route travel time; the method is simple and easily conducted; the operation conditions are easily met; the urban dynamic route travel time can be predicated to guide to select a reasonable travel route for the vehicle; and the method plays a key role in relieving urban traffic jam, and is easily popularized and used in large and medium size cities.

Description

technical field [0001] The invention relates to a method for predicting travel time of an urban dynamic route, which belongs to the technical field of road traffic. Background technique [0002] In the field of intelligent transportation research, how to improve the level of transportation services, many countries and regions have carried out research on urban road travel time prediction, and it has become one of the hot spots of international research. Existing travel time prediction methods mainly focus on travel time prediction for static routes. [0003] The prediction accuracy of the existing urban route travel time prediction methods is not high. If the existing prediction methods can be integrated to form traffic rules, various traffic characteristics are considered in the prediction process, and the travel time of various traffic events can be dynamically adjusted. Influenced weights will greatly improve the accuracy of vehicle travel time prediction. Contents of ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/0968G08G1/01
CPCG08G1/0129G08G1/096833
Inventor 刘文婷
Owner HOHAI UNIV
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