1. Professor, School of Transportation, Southeast Univ., Nanjing 210096, China.
2. Associate Professor, School of Transportation, Southeast Univ., Nanjing 210096, China (corresponding author).
3. Associate Professor, School of Transportation, Southeast Univ., Nanjing 210096, China.
4. Master’s Student, School of Transportation, Southeast Univ., Nanjing 210096, China.