1. School of Transportation and Logistics, Southwest Jiaotong University, Chengdu, People’s Republic of China
2. National United Engineering Laboratory of Integrated and Intelligent Transportation, Chengdu, People’s Republic of China
3. School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei, People’s Republic of China
4. Institute for Transport Studies, University of Leeds, Leeds, UK
5. Department of Civil Engineering, The University of Hong Kong