1. Professor, College of Transportation, Jilin Univ., No. 5988, Renmin St., City of Changchun, Jilin 130022, China.
2. Ph.D. Candidate, College of Transportation, Jilin Univ., No. 5988, Renmin St., City of Changchun, Jilin 130022, China.
3. College of Transportation, Jilin Univ., No. 5988, Renmin St., City of Changchun, Jilin 130022, China.
4. Ph.D. Candidate, College of Transportation, Jilin Univ., No. 5988, Renmin St., City of Changchun, Jilin 130022, China (corresponding author).