Junfeng Wang is a Professor and the Vice Director of the State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University. He received his Ph.D. degree from Beijing Jiaotong University, China; and has participated in several major projects on high-speed trains funded by the Chinese government in 2002. His research interests include intelligent transportation systems, communication-based train control, Radio Based Cab-Signaling, fault diagnosis, system reliability and safety, system-level fail-safe, mutual-discipline control studies in the high speed railway signaling system.