1. Ph.D. Candidate, Beijing Key Laboratory of Traffic Engineering, Beijing Univ. of Technology, Beijing 100124, China.
2. Lecturer, Beijing Key Laboratory of Traffic Engineering, Beijing Univ. of Technology, Beijing 100124, China (corresponding author).
3. Professor, Beijing Key Laboratory of Traffic Engineering, Beijing Univ. of Technology, Beijing 100124, China.
4. Senior Engineer, Jinan Rail Transit Group Company Limited, No. 5 Jiefang Dong Rd., Lixia District, Jinan 250101, Shandong, China.
5. Professor of Engineering, Beijing Transport Institute, No. 9 LiuLiQiao South Rd., Fengtai District, Beijing 100161, China.