Dr. Gu 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. He joined the Department of Electrical Engineering (now the Department of Electrical and Electronic Engineering) of the Hong Kong Polytechnic University in October 2013 as an Assistant Professor, and was promoted to Associate Professor in June 2019. Before joining PolyU in 2013, he was the Deputy Director of the UC Berkeley Center for Future Urban Transport, and also a lecturer at the Department of Civil & Environmental Engineering, UC Berkeley.

Dr. Gu has published over 35 journal papers, most of which are on top journals in the field, including Transportation Research Part A, B, C, E, and Transportation Science. He is also serving as the Editorial Board Editor for Transportation Research Part B, and the Associate Editor for Transportmetrica A: Transport Science and Transportmetrica B: Transport Dynamics.

As the Principal Investigator, Dr. Gu has been awarded one Early Career Scheme grant and four General Research Fund grants as PI from the Research Grant Council of Hong Kong, and a Smart Traffic Fund grant from the Transport Department of Hong Kong. His other awards include a Research Grant Achievement Award from the Faculty of Engineering at the Hong Kong Polytechnic University, a Gordon F. Newell Award for Excellence in Transportation Science, and a Chinese Government Award for Outstanding Self-Financing Students Abroad.

His research interests span over public transportation systems, multimodal urban transportation systems, traffic operations, queueing models, infrastructure management, electric vehicles, and maritime transportation. 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.

Dr. Gu taught "Analysis of Transportation Data" (for graduate students) at UC Berkeley, "Analysis Methods for Engineers" (for undergraduate students) and "System Modelling and Optimal Control" (for graduate students) at Hong Kong PolyU. He is currently teaching "Transportation Engineering Fundamentals", "Transportation Data Analytics", and "Society and the Engineer" (all for undergraduate students) at Hong Kong PolyU.