Dynamic od matrix estimation method based on automatic vehicle identification equipment

Abstract

The invention belongs to the field of traffic plan and management, in particular relating to a dynamic OD (Origin Destination) matrix estimating method based on an AVI (Automatic Vehicle Identification) device. The method comprises the following steps of: introducing a part of path information detected through AVI, dynamic travel time information and detector measurability criterion; performing lost path range determination and selection probability modification on the path-lost vehicle information according to a Bayes estimation algorithm firstly; simulating any vehicle by utilizing monte carlo random simulation and selecting lost paths so as to obtain an initially modified OD matrix based on a part of path of an individual vehicle; and finally correcting the initially modified OD matrixby utilizing the flow information of the AVI detection to obtain a final OD matrix estimation value. Through the method disclosed by the invention, the defects that the dependency on the priori information is high and aspects, such as detection precision and the like, are never considered because the road section flow and the travel time information are only considered in the traditional method can be overcome.

Description

Technical field [0001] The present invention is a transportation planning and management field, and it involves a dynamic OD matrix estimate based on automotive automatic identification equipment. Background technique [0002] The OD matrix of the vehicle travel is the core basic information of the traffic system planning, design and operation management.The accuracy of OD information directly affects the accurate judgment of urban traffic managers and traffic planning engineering and technical personnel on the status quo of traffic and future traffic. Therefore, it will directly affect the effectiveness of traffic management measures and the rationality of traffic planning.Therefore, the precise OD matrix is essential for the final decision and basis of urban traffic managers and urban traffic planners. [0003] The OD matrix of the vehicle travel is a set of mathematical matrix that describes any vehicles in the traffic network from the starting point. It directly reflects the ...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to address the deficiencies in the research and technology of the traditional dynamic OD matrix estimation method, especially the problem of insufficient depth of AVI information mining and excessive dependence on prior information, and proposes a new method based on automatic vehicle identification. Method for Estimating Dynamic OD Matrix of Equipment

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