Grid model based signal intersection operation evaluation method

A grid model and intersection technology, which is applied in the traffic control system of road vehicles, traffic flow detection, traffic control system, etc., can solve the problems of large amount of calculation, increase the burden of computer calculation, etc., and achieve the effect of improving traffic efficiency

Active Publication Date: 2018-10-12
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0004] The disadvantages of the method of using floating car data to evaluate the operation of signalized road intersections in the above-mentioned prior art include: this method has a large amount of calculation, which virtually increases the calculation burden of the computer

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  • Grid model based signal intersection operation evaluation method
  • Grid model based signal intersection operation evaluation method
  • Grid model based signal intersection operation evaluation method

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Embodiment Construction

[0048] In order to facilitate the understanding of the embodiments of the present invention, several specific embodiments will be taken as examples for further explanation below in conjunction with the accompanying drawings, and each embodiment does not constitute a limitation to the embodiments of the present invention.

[0049] The embodiment of the present invention adopts the grid model, abandons the limitation of the map, uses the floating car data with a time interval of 3s, and evaluates and diagnoses the intersection of signal roads in real time every 5 minutes, and makes a more refined evaluation of signal roads. Evaluate, diagnose and analyze intersections, which saves costs and improves calculation efficiency.

[0050] The processing flow of a method for evaluating the operation of a signalized intersection based on a grid model using floating car data provided by an embodiment of the present invention is as follows: figure 1 As shown, the following processing steps...

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Abstract

The invention provides a grid model based signal intersection operation evaluation method. The method comprises: constructing a grid model of a road intersection, and performing direction classifyingprocessing on trajectory data of floating vehicles passing through the urban road intersection on the basis of the grid model; obtaining traffic operation parameters of the road intersection, whereinthe traffic operation parameters include the traffic flow of the road intersection, the traffic time of the road intersection, the free flow time of the road intersection, and the average traffic speed of the road intersection; and calculating the traffic delay time of the road intersection according to the traffic operation parameters of the road intersection, and performing operation evaluationon the road intersection according to the traffic delay time. The method can traverse all the signal road intersections of the selected area under the condition of abandoning the map restriction, canperform real-time dynamic evaluation on the road intersections, can diagnose the cause of the road intersection delay, can ensure the accuracy of the evaluation diagnosis, and can improve the trafficefficiency of the road intersection.

Description

technical field [0001] The invention relates to the technical field of traffic control, in particular to a method for evaluating the operation of a signalized intersection based on a grid model. Background technique [0002] At present, road traffic congestion has become a serious social phenomenon, and the impact of delays caused by signalized road intersections is particularly prominent. Using a reasonable timing scheme for signalized road intersections can effectively regulate the traffic efficiency of signalized road intersections. However, the current timing scheme for signalized road intersections often has some problems in practical applications, resulting in low efficiency. Therefore, it is necessary to evaluate and diagnose signalized road intersections in real time, and obtain a reasonable timing scheme based on the evaluation results. [0003] At present, the method of using floating car data to evaluate the operation of signalized road intersections in the prio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01
CPCG08G1/0112G08G1/0133
Inventor 闫学东陈德启王立威高自友
Owner BEIJING JIAOTONG UNIV
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