1. Jiangsu Key Laboratory of Urban ITS, Southeast University, Nanjing 210096, China
2. Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies, Southeast University, Nanjing 210096, China
3. School of Transportation, Southeast University, Nanjing 210096, China
4. CCDI (Suzhou) Exploration & Design Consultant Co., Ltd., Suzhou 215123, China
5. Department of Transportation Engineering, School of Civil Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, China