Intermittent flow path section travel time estimation method based on floating car data and coil flow fusion

A technology of floating car data and travel time, applied in the field of intelligent transportation, can solve the problem that the coil data cannot accurately estimate the travel time of a road section, etc., and achieves the effect that the operating conditions are easy to meet, easy to popularize and apply, and the method and technology are simple and easy to implement.

Inactive Publication Date: 2013-02-13
TONGJI UNIV
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Problems solved by technology

[0006] Different from floating car data, coil data is a kind of cross-section data (including cross-section flow, cross-section occupancy rate, cross-sec

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  • Intermittent flow path section travel time estimation method based on floating car data and coil flow fusion
  • Intermittent flow path section travel time estimation method based on floating car data and coil flow fusion
  • Intermittent flow path section travel time estimation method based on floating car data and coil flow fusion

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Embodiment Construction

[0044] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further elaborated below.

[0045] The single-vehicle floating vehicle travel time estimation method used in the present invention is "direct method".

[0046] The traditional method for estimating the average travel time of the floating vehicle section is as follows: firstly, the direct method is used to estimate the section travel time of each floating vehicle sample, and then the average travel time of the section is obtained by arithmetically averaging the travel time of all samples of floating vehicles.

[0047]The basic principle of the direct method is to use the position coordinates of GPS positioning points on both sides of the road section boundary to estimate the moment when the vehicle passes the road section boundary by interpolation, and then calculate the single-vehicle road section travel time ...

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Abstract

The invention discloses an intermittent flow path section travel time estimation method. The floating car data and coil flow data exist on a target road section at the same time; the road section average travel time is estimated by fusing the floating car data and coil flow on the target road section; the floating car sample size divided by the coil flow is used as an index of the floating car sample coverage rate; and the estimated value of the road section average travel time is determined by taking the index as reference and combining the excavation of the history data in the same time interval. The method disclosed by the invention can effectively fuse the floating car data and the coil flow data, and the accuracy of the estimated value of the road section travel time is higher than the traditional accuracy of the estimated value of the floating car road section travel time and the estimated value of the coil road section travel time, thereby bringing important significance to the intelligent traffic service, the traffic management and the like. According to the invention, the method and technology are simple and easy to implement, the operation conditions are easy to meet, and the method is easy to popularize and apply in large and medium-size cities.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, in particular to the estimation and prediction of travel time in the field of traffic flow induction and management, and more specifically, to a method for estimating the travel time of intermittent flow sections based on the fusion of floating vehicles and flow data. Background technique [0002] Interrupted Flow means that traffic flow facilities have fixed elements that cause periodic interruptions in traffic flow. These elements include traffic signals, stop signs, and other types of control equipment. Regardless of the amount of traffic present, these devices cause traffic to stop periodically (or significantly slow down), which means that the flow of traffic on the road is interrupted by external factors, such as road intersections, signs or signals. fluid body. Generally speaking, the traffic flow on urban surface roads is discontinuous. [0003] The travel time predic...

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Application Information

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IPC IPC(8): G08G1/01
Inventor 杨晓光李慧兵
Owner TONGJI UNIV
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