1. Assistant Professor, Dept. of Civil Engineering, Southwest Jiaotong Univ., Chengdu 610031, China; Postdoctoral Fellow, Dept. of Civil and Environmental Engineering, Oklahoma State Univ., 207 Engineering South, Stillwater, OK 74078.
2. Professor, Dept. of Civil and Environmental Engineering, Oklahoma State Univ., 207 Engineering South, Stillwater, OK 74078; Professor, Dept. of Civil Engineering, Southwest Jiaotong Univ., Chengdu 610031, China.
3. Ph.D. Student, Dept. of Civil and Environmental Engineering, Oklahoma State Univ., 207 Engineering South, Stillwater, OK 74078.
4. Assistant Professor, School of Transportation and Logistics, Southwest Jiaotong Univ., Chengdu 610031, China (corresponding author).
5. Senior Research Engineer, Dept. of Civil and Environmental Engineering, Oklahoma State Univ., 207 Engineering South, Stillwater, OK 74078.
6. Assistant Professor, Dept. of Civil and Environmental Engineering, Oklahoma State Univ., 207 Engineering South, Stillwater, OK 74078.
7. Ph.D. Student, Dept. of Civil Engineering, Southwest Jiaotong Univ., Chengdu 610031, China.