1. School of Automobile and Traffic Engineering, Hefei University of Technology, Hefei, Anhui, China
2. School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei, Anhui, China
3. Key Laboratory of Traffic Information and Safety, Hefei, Anhui, China
4. School of Traffic and Transportation Engineering, Changsha University of Science of Technology, Changsha, Hunan, China