1. Guangxi Key Laboratory of Intelligent Transportation System, Guilin University of Electronic Technology, Guilin, China
2. School of Architecture and Transportation Engineering, Guilin University of Electronic Technology, Guilin, China
3. School of Transportation, Southeast University, Nanjing, China
4. Intelligent Transportation Research Center, Southeast University, Nanjing, China
5. School of Traffic and Transportation, Lanzhou Jiaotong University, Lanzhou, China
6. Faculty of Maritime and Transportation, Ningbo University, Ningbo, China