1. Key Laboratory of Road and Traffic Engineering of the Ministry of Education, College of Transportation Engineering, Tongji Univ., Shanghai, China.
2. Gansu Transportation Investment Management Co., Ltd., Lanzhou City, China.
3. CCCC First Highway Engineering Construction Co., Ltd., Taizhou City, Jiangsu Province, China.
4. Key Laboratory of Road and Traffic Engineering of the Ministry of Education, College of Transportation Engineering, Tongji Univ., Shanghai, China (corresponding author).Email: