Vehicle route selection method under traffic overflow state

A technology for vehicle path selection and overflow state, which is applied in the directions of road network navigators, navigation, instruments, etc.

Active Publication Date: 2016-10-26
SHANDONG UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the measures taken in most literatures are to improve the algorithm to make it more time-efficient and have smaller errors. However, the road condition is a constantly changing quantity. When studying urban traffic, the path selection of vehicles cannot be studied independently of the road condition. question

Method used

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  • Vehicle route selection method under traffic overflow state
  • Vehicle route selection method under traffic overflow state
  • Vehicle route selection method under traffic overflow state

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Embodiment Construction

[0063] The present invention is described in detail below in conjunction with accompanying drawing:

[0064] The equipment used in the present invention and simulation environment introduction:

[0065] Image acquisition equipment: camera. In the present invention, the road traffic status is acquired through the camera to provide data support for subsequent research.

[0066] Such as Figure 7 As shown, the software environment: SuperMap Deskpro.NET 6R: SuperMap Deskpro.NET 6R is the flagship GIS product among SuperMapGIS desktop products. It has comprehensive functions and supports extended development. The 3D integrated desktop GIS product can meet the diverse needs of users. Its main functions are: data management, data processing and conversion, spatial analysis, dynamic segmentation, network analysis, etc. In the present invention, the software is used to realize the selection of the vehicle route and the diffusion simulation of traffic overflow through programming, an...

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Abstract

The invention discloses a vehicle route selection method under a traffic overflow state. The method comprises the following steps: planning a shortest route for vehicle driving in a road network under a state that the start point and the destination have been known; when overflow is detected in a certain cross, inquiring a road attribute table to obtain the wave speed of stop wave in the road direction; calculating and finding the overflow cut-off point, namely the cross node between diffused overflow and planned route, according to a formula ([delta]t=T-T<omega>), judging whether the vehicle can successfully pass the overflow cut-off point or not, if the vehicle can pass the overflow cut-off point, the route does not need to be planned again, the driver can normally drive the vehicle according to the planned route; and planning a route again after a route planning algorithm is utilized to remove the overflow related sections in the road network until overflow does not influence the chosen route. The method guides a driver to drive a vehicle under a traffic jam state, and the static and dynamic route planning is very practical.

Description

technical field [0001] The invention relates to the field of intelligent traffic systems, in particular to a method for vehicle path selection in a traffic overflow state. Background technique [0002] Traffic overflow is a new research topic, and there are relatively few researches at home and abroad. Traditional overflow studies usually consider the problem of queuing time instead of queuing length, and most of them study the phenomenon of overflow itself without combining it with single-vehicle problems such as path planning. The traditional route selection problem usually focuses on the improvement of the algorithm, ignoring the actual road conditions and deviating from reality. [0003] Through searching, we found: [Li Shuguang et al., Research on multi-mode dynamic network loading problem with physical queuing, Transportation System Engineering and Information, 2009,1(9):56-61;], [Yao Ronghan, Vehicle queuing model research, Jilin University Doctoral dissertation;], ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/34
CPCG01C21/3492
Inventor 朱文兴董晓刚
Owner SHANDONG UNIV
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