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Method for estimating queuing length of signal control intersection

A technology of signal-controlled intersection and queue length, applied in the field of queue length estimation at signal-controlled intersection, can solve problems such as model instability and failure, and achieve the effects of high accuracy, wide application range, and high algorithm precision.

Active Publication Date: 2019-01-25
TONGJI UNIV
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Problems solved by technology

However, most existing methods are based on some assumptions, such as assuming known arrival patterns or high sampling rates, and most models will be unstable or fail under sparse trajectory conditions

Method used

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  • Method for estimating queuing length of signal control intersection
  • Method for estimating queuing length of signal control intersection
  • Method for estimating queuing length of signal control intersection

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Experimental program
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Embodiment

[0116] The present invention uses VISSIM to establish a queuing length estimation model to verify the arterial coordination control method, and builds a microscopic simulation model based on the intersection of Fuzhou South Road and Hong Kong Middle Road in Qingdao City, such as Figure 6 As shown, the north entrance road is selected as the research object. The entrance road contains 2 left-turn lanes, 2 through lanes, and a straight right-turn shared lane. This demonstration mainly focuses on the queuing length of two through lanes. Simulate the electric police equipment in reality by setting the data collection point at the stop line, and record the passing time data of the vehicle. Moreover, by recording the running time and space data of each vehicle, a certain proportion of vehicles is randomly extracted to simulate the trajectory data of floating vehicles in reality. In order to analyze the sensitivity of the model under different sampling rates, the sampling rates are ...

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Abstract

The invention relates to a method for estimating a queuing length of a signal control intersection. The method comprises the steps of: 1) acquiring electronic police data and floating vehicle trajectory data and pre-processing the data to obtain a corresponding data matrix, and determining a queuing sequence serial number of a floating vehicle in a current lane according to moment matching of theelectronic police data and the floating vehicle trajectory data; 2) acquiring vehicle dispersion headstock time interval and parking line passing moment density distribution; 3) and estimating a lane-level queuing length of the intersection, wherein the estimation is implemented by adopting a probability statistics method to fuse the electronic police data and the floating vehicle trajectory data,and estimating and correcting the lane-level queuing length. Compared with the prior art, the method has the advantages of good algorithm robustness, high algorithm precision, wide application rangeand the like.

Description

technical field [0001] The invention relates to the field of traffic control, in particular to a method for estimating queue length at signal-controlled intersections. Background technique [0002] As an important part of the urban road network, signalized intersections often experience traffic congestion due to the periodic traffic of traffic lights, which greatly restricts the overall operating efficiency of the road traffic system. Queue length is an important indicator for evaluating intersection operation. On the one hand, it can be used to indirectly estimate vehicle delays, parking times, and formation time, and on the other hand, it can be directly used to optimize signal timing. Therefore, accurate estimation of queue length parameters at signalized intersections plays an important role in the evaluation of intersection operation and optimization of signal control. [0003] At present, data sources for queuing length estimation at signal-controlled intersections ma...

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Application Information

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IPC IPC(8): G08G1/065
CPCG08G1/065
Inventor 唐克双刘磊谈超鹏吴浩
Owner TONGJI UNIV
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