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Urban path travel time forecasting method based on floating vehicle data

A technology of floating car data and travel time, applied in the field of intelligent transportation, can solve the problem of low prediction accuracy of travel time prediction method, and achieve the effect of alleviating the problem of traffic congestion

Inactive Publication Date: 2014-11-19
HOHAI UNIV
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AI Technical Summary

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

Method used

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  • Urban path travel time forecasting method based on floating vehicle data

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Embodiment Construction

[0033] Now in conjunction with accompanying drawing and specific embodiment, the present invention will be further described:

[0034] 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:

[0035]The first step S100 is to use data mining method to create historical traffic patterns and historical traffic rules based on floating car data;

[0036] 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:

[0037] 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.

[0038] Then the road congestion level is divided into 10 levels: the average speed is 0-5km / h defined as level 9; the average speed is 6-10km / h defined as level 8; ...

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Abstract

The invention discloses an urban path travel time forecasting method based on floating vehicle data. The urban path travel time forecasting methods based on floating vehicle data particularly includes the steps of analyzing historical data of a floating vehicle, creating historical traffic rules in a periodic mode, creating default traffic rules by traffic management departments or specialists, providing traffic events such as an input vehicle departure starting point and terminal point, the departure time and the current traffic condition to be matched with the traffic rules, and calculating the travel duration of each candidate path. The floating vehicle data can be excavated effectively, the urban path travel time is forecasted effectively, and the urban path travel time forecasting method based on the floating vehicle data is different from a traditional path travel time forecasting method based on the historical data. The method and the technology are easy to implement, operating conditions can be met easily, the urban path travel time can be forecast so as to guide vehicles to select a travel path reasonably, and the method plays a significant role in relieving urban traffic congestion and is easy to apply and popularize in large and medium cities.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to a method for predicting travel time of city routes based on floating car data. 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 predictable events and the impact of special weather on traffic patterns. [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 accura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01G06Q10/04
Inventor 刘文婷
Owner HOHAI UNIV
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