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Macroscopic traffic flow model modeling method based on microcosmic OVDM (Optimal velocity difference model) car-following model

A technology of macroscopic traffic flow and car-following model, which is applied in the field of macroscopic traffic flow model modeling based on microscopic OVDM car-following model, which can solve the problems of poor adaptability of macroscopic traffic flow

Inactive Publication Date: 2012-11-28
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0011] In order to overcome the deficiency that the existing OVDM micro-traffic flow car-following model has poor adaptability to macro-traffic flow, the present invention provides a macro-traffic flow model modeling method based on the micro-OVDM car-following model

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  • Macroscopic traffic flow model modeling method based on microcosmic OVDM (Optimal velocity difference model) car-following model
  • Macroscopic traffic flow model modeling method based on microcosmic OVDM (Optimal velocity difference model) car-following model
  • Macroscopic traffic flow model modeling method based on microcosmic OVDM (Optimal velocity difference model) car-following model

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Embodiment Construction

[0024] The specific steps of the present invention's macroscopic traffic flow model modeling method based on the microscopic OVDM car-following model are as follows:

[0025] 1. Consider the relationship between the distance between vehicles Δx and the average vehicle density ρ

[0026] Δx ~ 1 ρ - ρ x 2 ρ 3 - ρ xx 6 ρ 4 + ρ x 2 2 ρ 5 + · · · ,

[0027] In the formula, Δx is the headway distance between two consecutive vehicles, and ρ is the average...

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Abstract

The invention discloses a macroscopic traffic flow model modeling method based on a microcosmic OVDM car-following model for solving the technical problem that the current OVDM microcosmic traffic flow car-following model has poor suitability to macroscopic traffic flow. The technical scheme of the method is as follows: a new traffic model is established based on the analysis of the relevance between a space headway delta x and a vehicle average density rho. The relevance of system stability is obtained according to the new traffic model, and as the macroscopic traffic model is compared with a microcosmic traffic model, the relevance between the macroscopic traffic model and the microcosmic traffic model is obtained. And thus, the microcosmic traffic model and the macroscopic traffic model can be related to provide a basis for the control and the decision of the traffic, and the modeling method can be directly applied to the processing of the traffic jam problem in the macroscopic traffic flow.

Description

technical field [0001] The invention relates to a macroscopic traffic flow model modeling method, in particular to a macroscopic traffic flow model modeling method based on a microscopic OVDM car-following model. Background technique [0002] Transportation is a major issue related to the national economy and people's livelihood. The degree of modernization of the transportation system and the advanced degree of traffic management are important symbols to measure the degree of modernization of a country. However, in recent years, with the development of the economy, the number of various means of transportation has increased greatly. The facilities, roads, and traffic management systems of many countries in the world have been difficult to meet this speed of development, especially in large and medium-sized cities. Inconsistency of control signals, lack of traffic guidance system, confusion of vehicle scheduling and management, awareness of traffic regulations of traffic pa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/00
Inventor 史忠科周杰
Owner NORTHWESTERN POLYTECHNICAL UNIV
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