1. College of Architecture and Civil Engineering, Beijing Univ. of Technology, Beijing 100124, China; Beijing Engineering Research Center of Urban Transport Operation Guarantee, Beijing Univ. of Technology, Beijing 100124, China; School of Traffic, Qinghai Nationalities Univ., Xining 810007, China.
2. College of Architecture and Civil Engineering, Beijing Univ. of Technology, Beijing 100124, China; Beijing Engineering Research Center of Urban Transport Operation Guarantee, Beijing Univ. of Technology, Beijing 100124, China.
3. Beijing Engineering Research Center of Urban Transport Operation Guarantee, Beijing Univ. of Technology, Beijing 100124, China; Beijing E-Hualu Information Technology Co., Ltd., Beijing 100043, China.