1. Associate Professor, Dept. of Civil Engineering, Shanxi Univ., 36 South Honggou St., Taiyuan, Shanxi 030013, China; Postdoctoral Fellow, School of Transportation Science and Engineering, Beihang Univ., Beijing 100191, China (corresponding author). ORCID: .
2. Associate Professor, College of Applied Science and Technology, Illinois State Univ., Campus Box 5000, Normal, IL 61790-5000.
3. Assistant Professor, College of Architecture and Civil Engineering, Taiyuan Univ. of Technology, 79 West Yingze St., Taiyuan, Shanxi 030024, China; Research Collaborator, Key Lab of Highway Construction and Maintenance Technology in Loess Region, Ministry of Transport, Taiyuan, Shanxi 030006, China.
4. Professor, School of Transportation Science and Engineering, Beihang Univ., 37 Xueyuan Rd., Haidian District, Beijing 100191, China.