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《Journal of Transportation Systems Engineering and Information Technology》 2016-06
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Real-time Queue Length Estimation for Signalized Intersections Using GPS Data

WANG Yu;XU Jian-min;LIN Pei-qun;Key Laboratory for Traffic and Transportation Security of Jiangsu Province;School of Civil Engineering and Transportation,South China University of Technology;  
To estimate time-dependent queue length problem at signalized intersection is a challenging task for a long time, which will be more difficult if fixed-location sensors are unavailable at these intersections. In this paper, it is studied that the key technologies on how to use GPS data to estimate real time queue lengths at signalized intersections. A real time queue length estimation model is presented based on traffic shockwave theory and the concept of "discharging delay" is first put forward. Utilizing the real time estimation model and the "discharging delays" data of a few queuing vehicles, it can be computed that realtime queue length estimations cycle-by-cycle. In the end the model and algorithm is tested in a real intersection of Guangzhou city. The testing results show that the proposed model and algorithm can estimate queue lengths with satisfactory accuracy.
【Fund】: 国家自然科学基金(61573149);; 江苏省交通运输与安全保障重点建设实验室开放基金(TTS2016-03)~~
【CateGory Index】: U491
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