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Method and system in use for menstruating traffic movement on ground road network

A technology of traffic conditions and road network, applied in the field of intelligent transportation, which can solve problems such as limitations

Inactive Publication Date: 2006-12-06
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

(Because the information processed by the currently applied urban road traffic control information system is limited to urban road intersections, most of the urban road traffic measurement systems based on this are single-point measurement systems

Method used

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  • Method and system in use for menstruating traffic movement on ground road network
  • Method and system in use for menstruating traffic movement on ground road network
  • Method and system in use for menstruating traffic movement on ground road network

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Embodiment Construction

[0042] In the following, the method and system of the present invention will be further described by taking the traffic condition measurement of Shanghai road network in 2003 as an example by using the method and system of the present invention.

[0043] 1. Outfield equipment layout: use the existing detection coils in the urban road network, without setting up coil points, select road sections to install cameras and license plate recognition equipment, road conditions and traffic conditions in sections: the requirements for sections are that the road conditions are consistent , at the same time, the traffic conditions (peak hours, inflows and outflows are basically the same) are basically uniform, that is, there are no sudden changes in traffic flow; 1.5-5km is suitable, and the number of road sections is suitable for 8-11 intersections, so as to omit the interference of accidental factors on the travel speed; the detection coil and camera data are transferred to the main cont...

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Abstract

The invention is a method and system for determining city ground road network traffic conditions, determining intersections, city trunk roads and city trunk road network layer by layer, and giving a system structural diagram; for city trunk roads, advancing 'equivalent traffic capacity' concept and determining method; thus, adopting 'density ratio' index, and calculating service level nominal values of trunk roads according to the given service level nominal value curve and making determination; based on the determined results, adopting 'weighted density ratio' index to determine service level of trunk roads; identifying crowded regions, crowded trunk roads and crowded intersections layer by layer according to the corresponding determined results, thus able to reflect total conditions of a city road system.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and relates to a method and a system for measuring traffic conditions of a ground road network. Background technique [0002] The reasonable determination of the traffic conditions of urban arterial roads and arterial road networks is the basis for urban traffic planning and design, as well as the basis for traffic control and management. Since the development of traffic control information systems is relatively mature and widely used, such as the SCOOT system in the UK and the SCATS system in Australia, most of the existing urban traffic measurement systems are established based on the data collected by such systems. (Because the information processed by the currently applied urban road traffic control information system is limited to urban road intersections, most urban road traffic measurement systems based on this are single-point measurement systems. The road network is a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01G08G1/00G06F19/00
Inventor 孙立军杜豫川邵敏华董茂强张翛
Owner TONGJI UNIV
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