1. School of Civil Engineering and Geomatics, Shang Dong University of Technology, Zibo 255049, China
2. School of Engineering Management, Krirk University, Bangkok 10220, Thailand
3. School of Transportation Science and Engineering, Jilin Jianzhu University, Changchun 130118, China
4. College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China