Tongji university sustainable development and new-type urbanization think-tank cooperate with department of public service management and organize a student team for exploration and innovation, which is based on the course of “social investigation and research methods” and the project of “ potential risk in city public transportation: from perception to action, how long do we have to go?” Prof. Dajian ZHU, Prof. Yalei ZHANG, Dr. Haiyun Chen, Dr. Jie XU and Dr. Chao ZHANG are members of program committee and Dr. Haiyun Chen is the program leader. Besides, 20 undergraduates and 3 graduate students who come from the department of public service management participate in this project. They have undertaken bold probe and practice and have well realized project expectation.