1. Professor, College of Metropolitan Transportation, Beijing Univ. of Technology, No. 100, Pingleyuan, Chaoyang District, Beijing 100124, China (corresponding author).
2. Master Student, College of Metropolitan Transportation, Beijing Univ. of Technology, No. 100, Pingleyuan, Chaoyang District, Beijing 100124, China.
3. Assistant Professor, College of Metropolitan Transportation, Beijing Univ. of Technology, No. 100, Pingleyuan, Chaoyang District, Beijing 100124, China. ORCID: .
4. Senior Engineer, Beijing Municipal Commission of Transport, No. 9, Liuliqiao Nanli, Fengtai District, Beijing 100073, China.