Urban dynamic route travel time predication method

A technology of travel time and dynamic path, applied in traffic flow detection, traffic control system of road vehicles, instruments, etc., can solve the problem of low prediction accuracy of travel time prediction method

Inactive Publication Date: 2015-03-11
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

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  • Urban dynamic route travel time predication method

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Embodiment Construction

[0074] The present invention will be further described below in conjunction with the drawings. The following embodiments are only used to explain the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

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

[0076] Step 1: Use data mining methods to create historical traffic patterns and historical traffic rules based on floating car data;

[0077] In order to obtain the traffic mode and traffic rules for travel time prediction, the definitions of time and space 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 divide the roa...

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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 urban dynamic paths, and 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. The existing travel time prediction methods mainly focus on the travel time prediction of static routes. [0003] Existing urban route travel time prediction methods have low prediction accuracy. If the existing prediction methods can be integrated to form traffic rules, various traffic characteristics are considered in the prediction process, and various traffic events can be dynamically adjusted to travel time. The weight of influence will greatly improve the accuracy of vehicle travel time prediction. Summary of the invention [0004...

Claims

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Application Information

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IPC IPC(8): G08G1/0968G08G1/01
CPCG08G1/0129G08G1/096833
Inventor 刘文婷
Owner HOHAI UNIV
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