講座題目：Mitigating Bus and Car Queues at Congested Bus Stops（緩解擁堵公交車站公交車和私家車排隊問題的研究）
主講人：顧衛(wèi)華
時間：2014年4月16日14:15-15:15
地點：交通運輸學院一樓報告廳
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講座內(nèi)容摘要：
Busy bus stops are often the main bottlenecks of the bus systems, where buses often form long queues when waiting to enter the stop. These bus queues significantly degrade the overall quality of the bus service. Moreover, buses often dwell in a travel lane at a stop, and these dwelling buses will create temporary bottlenecks for the adjacent car traffic. The resulting car queues and delays can be large especially when the stop is located a short distance from a neighboring signalized intersection.

To solve these queueing problems, we formulated analytical models using distinct methods in queueing theory and traffic flow theory. The models can be used to answer real-world engineering questions such as: how many berths are needed for a busy bus stop; how to manage bus operations at a congested stop; where best to locate a bus stop relative to its neighboring signalized intersection; etc. These models can also be extended to examine more realistic problems of larger scales (e.g. queueing problems in bus corridors and networks), and other queueing problems in the transportation field, including car queueing at toll stations, taxi queues, queues of passengers boarding an airplane, etc.

主講人簡介：
Dr. Gu is now an assistant professor at the Department of Electrical Engineering, the Hong Kong Polytechnic University.? He received his Ph.D. in Civil & Environmental Engineering from University of California, Berkeley in 2012.? He also received his B.S. and M.Eng. degrees in Civil Engineering from Tsinghua University (Beijing, China) in 2002 and 2005; and his M.Sc. (in Industrial Engineering & Operations Research) and M.A. (in Economics) degrees from UC Berkeley in 2010 and 2011.

Dr. Gu’s research interests span over public transit systems, multimodal urban transportation systems, freeway traffic operations, queueing systems, and infrastructure systems management.? He is especially interested in how various transportation modes including cars, buses, rail, and bicycles interact in urban networks, and how to optimally design and manage such a multimodal urban transportation system for the benefit of all.

His awards include a Gordon F. Newell Award for Excellence in Transportation Science (granted by the Faculty of Transportation Engineering at UC Berkeley) and a Chinese Government Award for Outstanding Self-Financing Students Abroad.