1. Lecturer, Intelligent Transport System Research Center, Southeast Univ., 35 Jingxianghe Road, Nanjing, 210018, P.R. China (corresponding author).
2. Professor, Intelligent Transport System Research Center, Southeast Univ., 35 Jingxianghe Road, Nanjing, 210018, P.R. China.
3. Engineer, Suzhou Highway Bureau, No. 300 Tongjing South Road, Suzhou, 215007, P.R. China.