1. Associate Professor, Intelligent Transportation System Research Center, Southeast Univ., Nanjing 210096, China (corresponding author).
2. Ph.D. Candidate, School of Transportation, Southeast Univ., Nanjing 210096, China.
3. Postgraduate Student, School of Transportation, Southeast Univ., Nanjing 210096, China.
4. Professor, Intelligent Transportation System Research Center, Southeast Univ., Nanjing 210096, China.