1. National Engineering and Research Center for Mountainous Highways, China Merchants Chongqing Communications Technology Research & Design Institute Co., Ltd., Chongqing, People’s Republic of China
2. School of Civil Engineering, Chongqing University, Chongqing, People’s Republic of China
3. Guizhou Intelligent Operation and Maintenance Engineering Research Center for Mountainous Highways, Guizhou Expressway Group Co., Ltd., Guiyang, People’s Republic of China
4. School of Highway, Chang’an University, Xi’an, People’s Republic of China