1. Jiangsu Key Laboratory of Urban Intelligent Transportation Systems, Southeast Univ.; and Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies, 2 Si Pai Lou, Nanjing 210096, China.
2. Professor, Jiangsu Key Laboratory of Urban Intelligent Transportation Systems, Southeast Univ.; and Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies, 2 Si Pai Lou, Nanjing 210096, China (corresponding author).
3. Professor, Jiangsu Key Laboratory of Urban Intelligent Transportation Systems, Southeast Univ.; and Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies, 2 Si Pai Lou, Nanjing 210096, China.
4. Ph.D. Candidate, Jiangsu Key Laboratory of Urban Intelligent Transportation Systems, Southeast Univ.; and Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies, 2 Si Pai Lou, Nanjing 210096, China.
5. Assistant Professor, College of Civil and Transportation Engineering, Hohai Univ., 1 Xikang Rd., Nanjing 210098, China.