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Intersection traffic congestion index calculation method based on floating car

A technology of traffic congestion index and calculation method, which is applied in the direction of road vehicle traffic control system, traffic flow detection, traffic control system, etc., can solve the problems of difficult implementation, difficult maintenance, and high cost of coil detectors

Inactive Publication Date: 2015-11-18
HEFEI GELYU INFORMATION TECH
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AI Technical Summary

Problems solved by technology

But how to accurately evaluate the congestion level of the intersection in real time? Traditional coil detectors are costly, difficult to implement and difficult to maintain. In order to obtain real-time intersection congestion information and effectively evaluate intersection congestion levels, a calculation method for intersection congestion index based on floating car technology is proposed.

Method used

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  • Intersection traffic congestion index calculation method based on floating car
  • Intersection traffic congestion index calculation method based on floating car
  • Intersection traffic congestion index calculation method based on floating car

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Embodiment Construction

[0063] A method for calculating traffic congestion index at intersections based on floating cars, comprising the following steps:

[0064] (1) Use the GPS data of the floating car to calculate the speed of the bicycle sample on the road section;

[0065] (2) extracting the average travel speed of the road section;

[0066] (3) Calculate the saturation of each entrance at the intersection;

[0067] (4) Calculate the saturation of the intersection;

[0068] (5) Calculate the congestion index of the intersection;

[0069] (6) Estimation of service level of intersection operation.

[0070] Using floating car data to calculate the speed of a single vehicle sample on a road section is to calculate the average travel speed of a single vehicle sample within a statistical period. After obtaining the path information {P i ,i=1,2,L,n}, the average travel speed of this path is obtained through the path length and time difference When there is only one road segment (does not cross t...

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Abstract

The invention relates to an intersection traffic congestion index calculation method based on a floating car. According to the invention, a floating car technology is used to acquire the average speed of a road section; the saturation of an intersection channel is calculated; and the congestion index of the intersection is calculated. The method provided by the invention comprises the steps that the GPS data of the floating car are used to calculate the single-car sample speed of the road section; the average travel speed of the road section is extracted; the saturation of each entry channel of the intersection is calculated; the saturation of the intersection is calculated; the congestion index of the intersection is calculated; and the operation service level of the intersection is estimated.

Description

technical field [0001] The invention relates to the technical field of floating car data processing, in particular to a method for calculating traffic congestion index at intersections based on floating cars. Background technique [0002] Floating car technology is a technology to obtain road traffic conditions based on the dynamic position information of road running vehicles. Floating cars (taxis or buses) with GPS information can be used to collect vehicle displacement information in real time, and the time series of vehicle position coordinates By matching with the map, the speed data of floating vehicles can be obtained, and the real-time average speed of each relevant road section at the intersection can be obtained by taking the spatial average of all sample vehicle speeds in the road section, and the real-time average speed of the road section within a certain period can be obtained by arithmetically averaging the real-time speed of the road section. Periodic average...

Claims

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Application Information

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IPC IPC(8): G08G1/01G08G1/052
Inventor 邹娇高万宝吴先会李慧玲
Owner HEFEI GELYU INFORMATION TECH
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