1. Professor, College of Transportation Engineering, Chang’an Univ., Xi’an 710064, China; Professor, Dept. of Big Data Management and Application, Ministry of Education Engineering Center for Transport Infrastructure Digitalization, Xi’an 710064, China.
2. College of Transportation Engineering, Chang’an Univ., Xi’an 710064, China.
3. Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Univ. of Washington, Seattle, WA 98195-2700.
4. Ph.D. Candidate, College of Transportation Engineering, Chang’an Univ., Xi’an 710064, China.
5. Professor, College of Transportation Engineering, Chang’an Univ., Xi’an 710064, China; Professor, Dept. of Big Data Management and Application, Ministry of Education Engineering Center for Transport Infrastructure Digitalization, Xi’an 710064, China (corresponding author).