1. Lecturer, School of Traffic & Transportation Engineering, Changsha Univ. of Science & Technology, Changsha 410114, China. ORCID: .
2. Associate Professor, School of Civil Engineering, Changsha Univ. of Science & Technology, Changsha 410114, China (corresponding author).
3. Professor, School of Traffic & Transportation Engineering, Changsha Univ. of Science & Technology, Changsha 410114, China.