1. School of Transportation and Logistics, Southwest Jiaotong Univ., Chengdu, Sichuan 610031, China; National Engineering Laboratory of Integrated Transportation Big Data Application Technology, Southwest Jiaotong Univ., Chengdu, Sichuan 610031, China; Institute of Transportation Development Strategy and Planning of Sichuan Province, Chengdu, Sichuan 610001, China (corresponding author).
2. School of Transportation and Logistics, Southwest Jiaotong Univ., Chengdu, Sichuan 610031, China; National Engineering Laboratory of Integrated Transportation Big Data Application Technology, Southwest Jiaotong Univ., Chengdu, Sichuan 610031, China.
3. China Academy of Transportation Science, Beijing 100088, China.