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Method and device for estimating queuing length of intersection based on low-permeability vehicle track data

A technology of queuing length and vehicle trajectory, which is applied in the traffic control system of road vehicles, traffic flow detection, traffic control system, etc., can solve the problems of difficult maintenance in the later period, fixed-point detector construction cost and high damage rate, and achieve the purpose of expanding usage, The effect of expanding applicability and improving estimation accuracy

Inactive Publication Date: 2019-10-15
TONGJI UNIV
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AI Technical Summary

Problems solved by technology

Due to the high construction cost and damage rate of fixed-point detectors and the difficulty in later maintenance, under the background of the "Internet +" era, this method of obtaining traffic flow information urgently needs to be changed.

Method used

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  • Method and device for estimating queuing length of intersection based on low-permeability vehicle track data
  • Method and device for estimating queuing length of intersection based on low-permeability vehicle track data
  • Method and device for estimating queuing length of intersection based on low-permeability vehicle track data

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Embodiment Construction

[0050] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0051] The purpose of the present invention is to propose a method for estimating the queue length of each flow direction and each period of the intersection by using the low-permeability vehicle trajectory data within the intersection range. For vehicles equipped with mobile phone positioning APP, its positioning information includes: user ID, longitude, latitude, recording time and instantaneous speed and other information are recorded at a relatively high frequency to form vehicle trajectory data. The method of the invention utilizes these data as a single input, combines the traff...

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Abstract

The invention relates to a method and device for estimating the queuing length of an intersection based on low-permeability vehicle track data, wherein the method comprises the following steps of S1:converting the original estimated data into a distance-time diagram, and recording the vehicle state of each track point in the distance-time diagram, wherein the vehicle state comprises a traveling state and a queuing state; S2: identifying queuing key points based on the change of the vehicle state, wherein the queuing key points comprise a queuing joining point and a queuing leaving point; S3:periodically dividing each queuing key point; and S4: estimating a queuing evanescent wave and a queuing formation wave, and obtaining a maximum queuing length. Compared with the prior art, the methodand device for estimating the queuing length of the intersection based on low-permeability vehicle track data has the advantages of wide application range and the like.

Description

technical field [0001] The invention relates to a traffic control technology, in particular to a method and device for estimating queue length at intersections based on low-permeability vehicle trajectory data. Background technique [0002] Urban traffic plays a vital role in the development of the whole society. However, the problem of traffic congestion has become increasingly prominent and has become a major obstacle to the further development of cities. As the throat of urban traffic, the operation status of intersections has always attracted much attention. At present, the vehicle operation information at most intersections comes from manual surveys and the traffic detection equipment of the signal control system, such as fixed-point detectors buried below the stop line at the intersection or under the ground upstream of the entrance road. These devices can detect the flow of vehicles, Information such as speed and occupancy rate can provide a basis for the operation s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01G08G1/065
CPCG08G1/0104G08G1/0129G08G1/0133G08G1/065
Inventor 孙剑殷炬元胡祥旺唐克双
Owner TONGJI UNIV
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