1. Professor, School of Traffic and Transportation Engineering, Central South Univ., Changsha 410075, China.
2. Master Student, School of Traffic and Transportation Engineering, Central South Univ., Changsha 410075, China (corresponding author).
3. Master Student, School of Traffic and Transportation Engineering, Central South Univ., Changsha 410075, China.
4. Master Student, School of Traffic and Transportation Engineering, Central South Univ., Changsha 410075, China. ORCID: .