1. Assistant Professor, Department of Management Science and Engineering, Shanghai University, Shanghai, China; formerly, Ph.D Candidate, Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
2. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
3. Department of Information Science, College of Mathematics and Computational Science, Changsha University of Science and Technology, Changsha, Hunan, China
4. Department of Applied Mathematics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
5. Institute of Highway Engineering, RWTH Aachen University, Aachen, Germany