1. Department of Industrial Systems Engineering and Management, National University of Singapore, Singapore 117576, Singapore
2. Department of Logistics and Maritime Studies, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong 999077, China
3. Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong 999077, China
4. College of Transportation, Shandong University of Science and Technology, Qingdao 266590, China