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Traffic assignment method with interaction of macro and micro traffic simulation systems

A technology of microscopic traffic simulation and traffic distribution, applied in traffic flow detection and other directions, which can solve problems such as high computer resource requirements and difficulty in online operation.

Active Publication Date: 2018-01-23
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the micro-simulation system requires road traffic as input, and has high requirements for computer resources, so it is difficult to run online on a large-scale network.

Method used

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  • Traffic assignment method with interaction of macro and micro traffic simulation systems
  • Traffic assignment method with interaction of macro and micro traffic simulation systems
  • Traffic assignment method with interaction of macro and micro traffic simulation systems

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0019] The present invention provides a traffic allocation method for the interaction between macroscopic and microscopic traffic simulation systems. From the output results of the macroscopic traffic simulation system, the bottlenecks and high-flow road sections in the road network are selected as the research objects of the microscopic traffic simulation system. The flow output of the road section is used as the input parameter of the microscopic traffic simulation system, and the accurate running speed of the concerned road section is calculated by the microscopic traffic simulation system, and the speed value is used as the input parameter to interact with the macroscopic traffic system, and finally a more accurate traffic allocation result is obtained.

[0020] The present invention provides a traffic distribution method for interaction betw...

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Abstract

The present invention discloses a traffic assignment method with the interaction of macro and micro traffic simulation systems. According to the method, through selecting a bottleneck and a large-traffic road section in a road network as research objects of the micro traffic simulation system, an output road section flow of the macro traffic simulation system is taken as an input parameter of themicro traffic simulation system, a road section speed result of the micro traffic simulation system is taken as a modified input of the macro traffic simulation system, the two sets of systems interact continuously, and finally an accurate traffic assignment result is obtained. At the same time, since the micro simulation model is added, the influences of micro traffic management and control measures such as road expansion, channelization of an intersection and signal control on road flow and speed can be taken into account, road section flow and speed comparison before and after the management and control is outputted, and the method has a practical value.

Description

technical field [0001] The invention relates to the field of urban traffic planning, in particular to a traffic distribution method in which macroscopic and microscopic traffic simulation systems interact. Background technique [0002] The study of traffic allocation has always been an important content of the theoretical research of traffic planning. Traffic allocation is to distribute the known or predicted OD traffic volume to each road of the road network according to certain rules, and make quantitative analysis and analysis on the usage status, planning methods and management strategies of the urban traffic network based on this. Evaluation. When the traffic network reaches equilibrium, there are two mechanisms that restrict and interact with each other: on the one hand, various vehicles try to minimize their own travel costs by choosing the best route on the network; on the other hand, the greater the traffic volume on the road, the more users The more crowded you f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01
Inventor 王炜丁浩洋汪宇轩
Owner SOUTHEAST UNIV
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