1. School of Transportation and Logistics, Southwest Jiaotong University, Chengdu 611756, China
2. National United Engineering Laboratory of Integrated and Intelligent Transportation, Southwest Jiaotong University, Chengdu, China
3. National Engineering Laboratory of Integrated Transportation Big Data Application Technology, Southwest Jiaotong University, Chengdu, China
4. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China