1. School of Civil and Transportation Engineering, Ningbo University of Technology, Fenghua Rd. #201, Ningbo 315211, China
2. Key Laboratory of Road and Traffic Engineering, College of Transportation Engineering, Tongji University, 4800 Cao’an Road, Jiading, Shanghai 201804, China
3. Department of Security, Ningbo Highway Construction & Management Center, No. 396, Songjiang Mid. Rd., Ningbo 315199, China