吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (3): 756-763.doi: 10.13229/j.cnki.jdxbgxb201603012

• Orginal Article • Previous Articles     Next Articles

Intersection queue length estimation with single magnetic sensor

JIA Li-min1, CHEN Na1, LI Hai-jian1, 2, DONG Hong-hui1, 3   

  1. 1.State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044, China;
    2.Beijing Key Laboratory of Traffic Engineering, Beijing University of Technology, Beijing 100124, China;
    3.Beijing Engineering Research Center of Urban Traffic Information Intelligent Sensing and Service Technologies, Beijing Jiaotong University, Beijing 100044, China
  • Received:2014-08-26 Online:2016-06-20 Published:2016-06-20

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Abstract: To estimate the intersection queue length, a magnetic sensor is deployed near the stop line at the intersection. Through the vehicle queue mechanism modeling, the evolution of vehicle occupancy sensor time and the departure interval can be obtained. Eventually, the queue length of the last signal cycle can be estimated. This paper analyzes the variance of vehicle occupancy sensor time and the departure interval with the increase in queued vehicle number, thereby proposes departure interval model, vehicle occupancy sensor time model and comprehensive model to estimate the queue length. The accuracies of the proposed models are compared using field experiments. Results show that the proposed queue length estimation method can accurately get the queue length of the last signal cycle. The method costs low and can be deployed easily, and thus, it can facilitate large-scale popularization and application. It can provide intersection queue length information for signal cycle optimization and traffic service level evaluation in road signal intersections.

Key words: engineering of transportation and communication system, magnetic sensor, signal intersection, queue length estimation, queued vehicle numbers

CLC Number: 

  • U491
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