1. Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, No. 4800 Cao’an Hwy., Shanghai 201804, China
2. Chongqing Key Laboratory of Traffic System & Safety in Mountain Cities, Chongqing Jiaotong University, No. 66 Xuefu Rd., Nan’an Dist., Chongqing, 400074, China
3. School of Economics & Management, Tongji University, No. 1230 Siping Rd., Shanghai 200092, China (Corresponding author), e-mail: shengchuanjiang@tongji.edu.cn, http://orcid.org/0000-0002-7212-7719
4. College of Design and Innovation, Tongji University, No. 1239 Siping Rd., Shanghai 200092, China