1. Faculty of Maritime and Transportation; Ningbo University; 818 Fenghua Road, Jiangbei District Ningbo 315211 China
2. National Traffic Management Engineering & Technology Research Centre Ningbo University Sub-Centre; Ningbo University; 818 Fenghua Road, Jiangbei District Ningbo 315211 China
3. Wuhan University of Technology; 1178#, Heping Avenue Wuhan Hubei 430063 China
4. Department of Civil and Environmental Engineering; Kumamoto University; 2-39-1, Kurokami Kumamoto 860-8555 Japan