1. Key Laboratory of Transport Industry of Big Data Application Technologies for Comprehensive Transport, Beijing Jiaotong University, Beijing 100044, China
2. Department of Intelligent Transportation System, Beijing Transport Institute, Beijing 100073, China
3. Department of Transportation Studies, Xuchang University, Xuchang 461000, China
4. Department of Transportation Studies, Texas Southern University, 3100 Cleburne Avenue, Houston, TX 77004, USA