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System optimal traffic distribution model and distribution method oriented to heterogeneous users

A traffic allocation and optimal technology, applied in the traffic control system of road vehicles, traffic flow detection, traffic control system, etc., can solve the problems that cannot reflect the impact of traffic allocation

Inactive Publication Date: 2014-07-09
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is that the traffic allocation method in the prior art cannot reflect the problem that the traffic allocation is affected by the different time values ​​of different groups of people, thus proposing a heterogeneous user-oriented system optimal traffic allocation method

Method used

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  • System optimal traffic distribution model and distribution method oriented to heterogeneous users
  • System optimal traffic distribution model and distribution method oriented to heterogeneous users
  • System optimal traffic distribution model and distribution method oriented to heterogeneous users

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Experimental program
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Embodiment 1

[0067] In this embodiment, an optimal traffic allocation model for heterogeneous users is provided, which is as follows

[0068] min f Z ( f ) = Σ w ∈ W Σ r = 1 | R w | t w r ( f ) ( ∫ 0 f w r β w ( Σ ...

Embodiment 2

[0087] This embodiment provides a heterogeneous user-oriented optimal traffic allocation method using the system optimal traffic allocation model described in claim 1. The system architecture and overall process are as follows figure 1 and figure 2 shown, including:

[0088] Step 1, extracting the network structure and parameters in the road traffic network. Abstract the road traffic network in reality, and then determine the traffic road network structure and related parameters through data extraction and processing.

[0089] Step 2, constructing the system optimal traffic allocation model in Embodiment 1. Based on the traffic network structure, the optimal traffic allocation model of the system is constructed. This model is as shown in embodiment 1, and this model is as follows

[0090] min f Z ( f ) = Σ w ∈ ...

Embodiment 3

[0124] In this embodiment, a specific application example of the optimal traffic allocation model and heterogeneous user-oriented optimal traffic allocation method in the above embodiments is provided.

[0125] Step 1, such as Figure 4 As shown, there is only one OD pair in the transportation network, and the OD pair has two paths a and b, such as Figure 4 shown. The travel time functions of paths a and b are respectively t a (x a )=50+x a ,t b (x a )=30+2x a .

[0126] Step 2. The traffic network has only one OD pair with two paths. The optimal traffic allocation model of the system is constructed as follows:

[0127] min Z f ( f ) = Σ r = 1 2 t r ( f r ...

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Abstract

A system optimal traffic distribution method oriented to heterogeneous users comprises the following steps that abstraction is carried out on actual road traffic networks to establish a system optimal traffic distribution network basis of a system model; the specific scene at a traffic travel position is judged to determine needed OD data and all OD user time value distribution; a system optimal traffic distribution model oriented to heterogeneous user networks is established; the model is solved by applying an effective algorithm, and therefore section flow and path flow indexes of road network traffic flow distribution based on the specific scene are obtained. The system optimal traffic distribution method oriented to the heterogeneous users solves the problems that in existing traffic distribution technologies, user time value differences are not taken into consideration and implementation effects of congestion charging are influenced, the traffic flow distribution indexes, calculated and obtained through the method, of road traffic networks and the like are more reasonable and accurate compared with the prior art, and full bases are provided for making and implementation of congestion charging strategies.

Description

technical field [0001] The invention relates to a traffic optimization method, in particular to a system optimal traffic allocation model and allocation method for heterogeneous users. Background technique [0002] With the development of the economy and the acceleration of the urbanization process, the urban traffic volume has increased sharply, and traffic jams, traffic accidents, traffic energy consumption and environmental pollution have become increasingly serious. Due to the limitation of urban space, economic and environmental problems, in the face of increasingly serious traffic congestion problems, some large cities are preparing to impose congestion charges, using economic means to alleviate urban traffic congestion, and through the resulting reduction in traffic volume. Reduce traffic accidents, environmental pollution and energy consumption. Taking Beijing as an example, the "congestion control plan" clearly stated that "study on key congested road sections or r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/00G08G1/01G06Q10/04
Inventor 吴文祥李颖宏
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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