1. Hunan International Scientific and Technological Innovation Cooperation Base of Advanced Construction and Maintenance Technology of Highway, Changsha University of Science & Technology, Changsha 410205, China
2. School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha 410205, China
3. College of Transportation Engineering, Chang’an University, Xi’an 710064, China
4. School of Engineering and Design, Technical University of Munich, 80333 Munich, Germany