1. Ph.D. Student, School of Transportation Science and Engineering, Beihang Univ., 37 Xueyuan Rd., Beijing 100191, China. ORCID: .
2. Associate Professor, School of Ecology and Environment, Beijing Technology and Business Univ., 33 Fucheng Rd., Beijing 100048, China.
3. Assistant Professor, School of Transportation Science and Engineering, Beihang Univ., 37 Xueyuan Rd., Beijing 100191, China. ORCID: .
4. Senior Lecturer, Dept. of Civil and Environmental Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK (corresponding author). ORCID: .