1. General Engineer, Communication Research Institute of Liaoning Province, Key Laboratory of Expressway Maintenance Technology of Ministry of Transportation, Number 81, Wencui Rd., Dongling District, Shenyang, Liaoning Province 110015, China.
2. Senior Engineer, Communication Research Institute of Liaoning Province, Key Laboratory of Expressway Maintenance Technology of Ministry of Transportation, Number 81, Wencui Rd., Dongling District, Shenyang, Liaoning Province 110015, China.
3. Engineer, Communication Research Institute of Liaoning Province, Key Laboratory of Expressway Maintenance Technology of Ministry of Transportation, Number 81, Wencui Rd., Dongling District, Shenyang, Liaoning Province 110015, China; and, Tongji Univ., Key Laboratory of Road and Traffic Engineering, Ministry of Education, No. 4800 Cao An Rd., Jia Ding District, Shanghai 201804, China (corresponding author).