1. Key Laboratory of Transport Industry of Big Data Application Technologies for Comprehensive Transport, Beijing Jiaotong University, Shangyuancun No. 3, Haidian District, Beijing, 100044, China
2. Department of Civil and Environmental Engineering, Pennsylvania State University, University Park, PA 16802, USA
3. Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai 201804, China
4. Department of Civil and Environmental Engineering, University of Washington, Seattle, WA 98195, USA