1. School of Transportation, Southeast University, Nanjing, People’s Republic of China
2. Rail Transportation Engineering, Pennsylvania State University, Altoona, PA, USA
3. Department of Civil, Coastal, and Environmental Engineering, University of South Alabama, Mobile, AL, USA
4. Research Institute of Highway Ministry of Transport, Beijing, People’s Republic of China
5. Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA, USA
6. Highway Administration of Shanxi Province, Taiyuan, People’s Republic of China