1. Ph.D. Candidate, School of Transportation and Logistics, National United Engineering Laboratory of Integrated and Intelligent Transportation, Southwest Jiaotong Univ., Chengdu 610031, Sichuan, China. ORCID: .
2. Professor, Dept. of Civil and Environmental Engineering, Univ. of Maryland, College Park, MD 20742. ORCID: .
3. Professor, School of Transportation and Logistics, National United Engineering Laboratory of Integrated and Intelligent Transportation, Southwest Jiaotong Univ., Chengdu 610031, Sichuan, China.
4. Assistant Professor, School of Transportation and Logistics, Southwest Jiaotong Univ., National United Engineering Laboratory of Integrated and Intelligent Transportation, Chengdu 610031, Sichuan, China (corresponding author).