1. Assistant Professor, School of Traffic and Transportation, Beijing Jiaotong Univ., Beijing 100044, China; Visiting Scholar, Dept. of Civil Engineering, Tsinghua Univ., Beijing 100084, China.
2. Associate Professor, Dept. of Civil and Environmental Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180.
3. Ph.D. Candidate, Dept. of Civil Engineering, Tsinghua Univ., Beijing 100084, China.
4. Senior Engineer, Baidu Online Network Technology (Beijing) Co., Ltd., 10 Shangdi 10th St., Haidian, Beijing 100010, China.
5. Associate Professor, Dept. of Civil Engineering, Tsinghua Univ., Beijing 100084, China (corresponding author). ORCID: .