1. Ph.D. Candidate, School of Transportation Engineering, Tongji Univ., 4800 Cao’an Highway, Shanghai 201804, China.
2. Professor, School of Transportation Engineering, Tongji Univ., 4800 Cao’an Highway, Shanghai 201804, China (corresponding author).
3. Ph.D., School of Transportation Engineering, Tongji Univ., 4800 Cao’an Highway, Shanghai 201804, China.