Grid model based signal intersection operation evaluation method

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...

AI Technical Summary

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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