1. Associate Professor, School of Automotive and Transportation Engineering, Hefei Univ. of Technology, 193 Tunxi Rd., Baohe, Hefei, Anhui 230009, China (corresponding author).
2. Graduate Student, School of Automotive and Transportation Engineering, Hefei Univ. of Technology, 193 Tunxi Rd., Baohe, Hefei, Anhui 230009, China.
3. Lecturer, School of Engineering, Monash Univ., Clayton, VIC 3800, Australia.
4. Professor, Dept. of Civil and Environmental Engineering, Michigan Technological Univ., 1400 Townsend Dr., Houghton, MI 49931.