1. School of Highway, Chang’an University, Xi’an, People’s Republic of China
2. Key Laboratory of Special Area Road Engineering of Ministry of Education, Chang’an University, Xi’an, People’s Republic of China
3. School of Civil Engineering and Transportation, South China University of Technology, Gunagzhou, People’s Republic of China
4. School of Transportation and Logistics, East China Jiaotong University, Nanchang, People’s Republic of China