1. School of Transportation and Logistics, Southwest Jiaotong University, Chengdu, Sichuan, People's Republic of China
2. National United Engineering Laboratory of Integrated and Intelligent Transportation, Southwest Jiaotong University, Chengdu, Sichuan, People's Republic of China
3. HEC Lausanne Faculty of Business and Economics, University of Lausanne, Lausanne, Switzerland
4. School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei, Anhui, People's Republic of China