Estimation method of actual traffic demand flow based on link travel time
A technology of travel time and traffic demand, applied in the field of intelligent transportation, can solve the problems such as the inability to guarantee the accuracy of detection data and affect the effectiveness of traffic control strategies, and achieve the effect of improving accuracy
Active Publication Date: 2021-06-01
济南全通信息科技有限公司
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The recognition accuracy is related to the detector recognition algorithm and model, and the accuracy of the detection data cannot be guaranteed
[0006] 3) The existing traffic demand flow research methods have limitations
At present, the actual traffic demand flow is mostly directly replaced by the traffic flow through the detection equipment. Due to the limitations of the detection function and installation location of the detector, there is a big difference between the traffic flow passed by the detector and the actual traffic demand flow, which affects the effectiveness of the traffic control strategy. sex
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[0023] The actual traffic demand flow estimation method based on the road section travel time includes the following steps:
[0024] (1) Statistical traffic flow through the detector: take the signal period as the statistical time interval, and count the traffic flow through the detector in each signal period; at least one detector is located at the starting point of the path, and one detector is located at the end of the path, and Signal lights are provided at the end of the path, and two adjacent road intersections are used as the starting point and end point of a path respectively. The traffic flow through the detector is used as the basic data of the actual traffic demand flow, the actual traffic demand flow is small in the flat peak period, and the traffic flow detected by the detector is also small, and the two are basically equal; the actual traffic demand flow increases sharply during the peak period, and the detector The detected traffic flow may not increase but decr...
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The present invention relates to the estimation method of the actual traffic demand flow based on the travel time of the road section, including the statistics of the traffic flow through the detector, the estimation of the travel time of the road section, the delay time of the vehicle intersection, and the estimation of the traffic demand flow; Analysis and determination of road traffic status, vehicle parking time, delay time, etc., while considering the error caused by the vehicle capture rate and license plate recognition rate of the detection equipment, the accuracy and reliability of traffic demand flow estimation are improved, and the actual traffic at the intersection can be accurately estimated demand traffic.
Description
technical field [0001] The invention relates to a method for estimating actual traffic demand flow based on road segment travel time, and belongs to the technical field of intelligent traffic. Background technique [0002] With the improvement of the economy and people's living standards, problems such as traffic congestion and traffic safety on urban roads have become increasingly prominent. It is of great significance to achieve effective management of traffic flow and improve road traffic efficiency by optimizing traffic control strategies. Therefore, only by studying the actual traffic demand flow estimation method, obtaining the actual traffic demand flow, and improving the effectiveness and reliability of the traffic control strategy can we truly alleviate the road congestion problem. [0003] The limitations of existing actual traffic demand flow estimation methods mainly include the following points: [0004] 1) The method of estimating actual traffic demand flow t...
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IPC IPC(8): G08G1/08
CPCG08G1/08
Inventor 曾明德潘述亮张彤邹难
Owner 济南全通信息科技有限公司