1. College of Civil and Transportation Engineering, Hohai University, Nanjing, Jiangsu, People’s Republic of China
2. Jiangsu Expressway Engineering Maintenance Technology Center, Nanjing, Jiangsu, People’s Republic of China
3. Jiangsu Communications Holding Co., Ltd., Nanjing, Jiangsu, People’s Republic of China
4. Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore