1. Jiangsu modern urban transportation technology Collaborative innovation center, Faculty of Maritime and Transportation, Ningbo University, Ningbo, People’s Republic of China
2. School of Transportation and Logistics, Southwest Jiaotong University, Chengdu, People’s Republic of China
3. School of Architecture and Transportation, Guilin University of Electronic Technology, Guilin, People’s Republic of China
4. College of Automobile and Traffic Engineering, Nanjing Forestry University, Nanjing, People’s Republic of China
5. School of Transportation, Southeast University, Nanjing, People’s Republic of China
6. Department of Civil and Environmental Engineering, University of Wisconsin–Madison, Madison, WI, USA