1. Assistant Professor, Institute of Smart City and Intelligent Transportation, Southwest Jiaotong Univ., Chengdu 610041, China (corresponding author). ORCID: .
2. Professor, Dept. of Civil and Environmental Engineering, Pennsylvania State Univ., University Park, PA 16802.
3. Associate Professor, Dept. of Civil and Environmental Engineering, Pennsylvania State Univ., University Park, PA 16802.