1. Guangdong Key Laboratory of Intelligent Transportation Systems, School of Intelligent Systems Engineering, Sun Yat-sen University, Guangdong, People's Republic of China
2. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, People's Republic of China
3. Guangzhou Transport Planning Research Institute, Guangzhou, People's Republic of China
4. School of Integrated Innovation, Chulalongkorn University, Bangkok, Thailand