1. School of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an, People’s Republic of China
2. School of Transportation, Southeast University, Nanjing, People’s Republic of China
3. School of Highway, Chang’an University, Xi’an, People’s Republic of China
4. School of Civil Engineering, Nanjing Forestry University, Nanjing, People’s Republic of China
5. No. 1 Municipal Administration Institute, Xianyang Planning & Design Institute, Xianyang, People’s Republic of China