1. Key Laboratory of Road and Traffic Engineering, Ministry of Education, Tongji University, Shanghai, China
2. Department of Civil and Environmental Engineering, The University of Utah, Salt Lake City, UT, USA
3. Department of Civil and Environmental Engineering, Seoul National University (SNU), Seoul, Gwanak-gu, South Korea
4. School of Information Engineering, Chang’an University, Beilin, Shaanxi, Xi’an, China