PENGFEI ZHAO received the B.S. degree at Shandong Jiaotong University in 2014, and the M.S. and Ph.D. degrees in transportation engineering at Beijing University of Technology, Beijing, China, in 2017 and 2020, respectively. He is currently a postdoctoral research fellow at Beijing University of Civil Engineering and Architecture. His research interests include smart travlel, pedestrian traffic, urban parking.