1. School of Traffic and Transportation, Chongqing Jiaotong University, Chongqing, China
2. Development of Science and Technology Statistics and Innovation, Chongqing Productivity Council, Chongqing, China
3. Development of Traffic Engineering, Institute of Chongqing Transport Planning, Chongqing, China
4. Development of Technology R&D, Chongqing YouLiang Science & Technology Co., Ltd, Chongqing, China