1. School of Economics and Management, Xi’an Technological University, Xi’an, China
2. College of Transportation Engineering, Chang’an University, Xi’an, China
3. Jiangsu Key Laboratory of Urban ITS, School of Transportation, Southeast University, Nanjing, China
4. Key Laboratory of Transport Industry of Management, Control and Cycle Repair Technology for Traffic Network Facilities in Ecological Security Barrier Area, Xi’an, China