1. Center for Transport Studies, Department of Civil and Environmental Engineering, Imperial College London, London, UK
2. School of Civil Engineering, Zhejiang University/University of Illinois at Urbana-Champaign Institute (ZJU-UIUC Institute), Haining, China
3. Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
4. School of Public Affairs, Zhejiang University, Hangzhou, China
5. School of Transportation and Logistics, Southwest Jiaotong University, Chengdu, China