1. School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, China
2. Shanghai Municipal Engineering Design Institute (Group) Co., Ltd. (Wuhan Branch), Wuhan, China
3. School of Traffic and Transportation Engineering, Lanzhou Jiaotong University, Lanzhou, China
4. Department of Transportation Engineering, University of Hong Kong Pokfulam Road, Hong Kong, China