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Urban regional road network operation index assessment method based on floating car technology

A technology of operation index and urban area, applied in the field of cloud data processing, can solve problems such as lack of applicability, and achieve the effect of wide coverage, high flexibility and high coverage intensity

Inactive Publication Date: 2015-12-09
HEFEI GELYU INFORMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The Beijing Transportation Research Center once proposed a calculation method similar to the traffic congestion index, but its key parameter, the number of vehicle kilometers, is a constant and is determined by expert methods. It is only determined according to the local traffic characteristics of Beijing, and it is not applicable to a certain extent.

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  • Urban regional road network operation index assessment method based on floating car technology
  • Urban regional road network operation index assessment method based on floating car technology
  • Urban regional road network operation index assessment method based on floating car technology

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Embodiment Construction

[0038] A method for evaluating urban regional road network operation index based on floating car technology, comprising the following steps:

[0039] S1. Use the GPS data of the floating car to calculate the average travel speed of the single vehicle sample in a statistical period of the road section. 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 the intersection) or km / h (unblocked state), the assigned to road segment P 1 ; Otherwise, according to the following principles, combined with the instantaneous velocity v of the starting point 1 and the instantaneous velocity v at the terminal point 2 , and assign the speed of each section of the route in four traffic states:

[0040] ①Deceleration state (satisfy )Time

[0041] The speed value of the initial section is assigned as The speed values ​​of other road sec...

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Abstract

The invention relates to an urban regional road network operation index assessment method based on a floating car technology. On the basis of the floating car technology, a regional road network operation index RNCR can be assessed by calculating a vehicle kilometers traveled proportion VKT. The method comprises the following steps: calculating a road single vehicle sample speed through floating car GPS data; extracting the average travel speed of one separate road; determining the traffic jam state of one separate road; calculating the jam mileage proportion of the roads of all levels; calculating vehicle kilometers traveled VKT; calculating a regional road network operation index RNCR; and assessing the traffic running state of a regional road network.

Description

technical field [0001] The invention relates to the technical field of cloud data processing, in particular to a method for evaluating urban regional road network operation index based on floating car technology. Background technique [0002] Floating car technology is a technology to obtain road traffic conditions based on the dynamic position information of vehicles running on the road surface. The floating car (taxi or bus) with GPS information can collect the displacement information of the vehicle in real time, and the time series of vehicle position By matching the coordinates with the map, the speed data of the floating vehicle can be obtained, and the real-time average speed of the road can be obtained by taking the spatial average of the speed of all floating points on the road section, and the average speed of the road cycle can be obtained by arithmetically averaging the real-time speed of the road section within a certain period , the threshold method is used to ...

Claims

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Application Information

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