1. Ph.D. Candidate, School of Traffic and Transportation, Beijing Jiaotong Univ., Beijing 100044, China. ORCID:
2. Professor, Key Laboratory of Transport Industry of Big Data Application Technologies for Comprehensive Transport, Beijing Jiaotong Univ., Beijing 100044, China (corresponding author).
3. Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of Washington, Seattle, WA 98195-2700.
4. Lecturer, School of Automobile, Chang’an Univ., Xi’an 710064, China.