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Dynamic OD estimation method and device based on real path flow backtracking adjustment

A path and flow technology, applied in the field of traffic simulation, can solve the problems of poor timeliness and accuracy of OD estimation

Active Publication Date: 2020-03-31
SHENZHEN URBAN TRANSPORT PLANNING CENT
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a dynamic OD estimation method, device, computer equipment, and storage medium based on retrospective adjustment of actual path traffic, which can solve the problem of poor timeliness and accuracy of dynamic OD estimation in existing traffic simulations

Method used

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  • Dynamic OD estimation method and device based on real path flow backtracking adjustment
  • Dynamic OD estimation method and device based on real path flow backtracking adjustment
  • Dynamic OD estimation method and device based on real path flow backtracking adjustment

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Embodiment Construction

[0033] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0034] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other Presence or addition of features, wholes, steps, operations, elements, components and / or collections thereof.

[0035] It should...

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Abstract

The invention is applicable to the technical field of traffic simulation, and provides a dynamic OD estimation method based on real path flow backtracking adjustment. The method comprises: acquiring traffic real-time detection data of a target traffic network; obtaining traffic travel data in a simulation area of the target traffic network to obtain an initial OD matrix; performing dynamic trafficdistribution on the initial OD matrix on the target traffic road network to obtain a traffic simulation result of the target traffic road network; comparing the traffic simulation result with the traffic real-time detection data, and calculating the simulation precision of the traffic simulation result; if the simulation precision does not meet the preset precision requirement, adjusting the flowon each OD path of the target traffic network, then carrying out dynamic traffic distribution again to obtain a new traffic simulation result, and returning to execute the step of comparing the traffic simulation result with the traffic real-time detection data to calculate the simulation precision of the traffic simulation result; and if the simulation precision meets the preset precision requirement, outputting a traffic simulation result.

Description

technical field [0001] The present application belongs to the technical field of traffic simulation, and in particular relates to a dynamic OD estimation method and device based on retrospective adjustment of realistic path flow. Background technique [0002] The dynamic OD matrix describes the dynamic traffic demand in the traffic network, and is the basic input data of the Dynamic Traffic Allocation (DTA) model and some practical micro-traffic simulators. In Intelligent Transportation System (ITS), the problem faced by Advanced Traveler Information System (ATIS) is how to reasonably allocate dynamic traffic demand to different routes, so as to reduce the travel cost of individuals or the whole system. Because the acquisition of the traditional OD matrix requires a large-scale traffic survey, it consumes a lot of manpower, material resources and financial resources. Therefore, it is a very economical and efficient method to invert the real-time OD matrix through the road s...

Claims

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Application Information

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IPC IPC(8): G08G1/01G06F17/40G06Q10/04G06Q50/26
CPCG06Q10/047G06Q50/26G08G1/0125G08G1/0137
Inventor 张晓春周勇吴若乾陈振武
Owner SHENZHEN URBAN TRANSPORT PLANNING CENT
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