1. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai, People's Republic of China
2. Department of Civil Engineering, The University of Hong Kong, Hong Kong
3. Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai, People's Republic of China
4. Department of Mathematics, Southwest University of Science and Technology, Mianyang, Sichuan, People's Republic of China
5. Department of Transportation Engineering, TOD-based Sustainable Urban Transportation Center, Ajou University, Suwon, Republic of Korea
6. Key Lab. of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai, People's Republic of China