1. School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
2. School of Architecture, The Chinese University of Hong Kong, Hong Kong SAR, China
3. The Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China
4. Urban Mobility Institute, Tongji University, Shanghai 200092, China
5. Institute of Rail Transit, Tongji University, Shanghai 201804, China