1. Associate Professor, Beijing Key Laboratory of Traffic Engineering, Beijing Univ. of Technology, Beijing 100124, China.
2. Beijing Key Laboratory of Traffic Engineering, Beijing Univ. of Technology, Beijing 100124, China (corresponding author).
3. Beijing Municipal Institute of City Planning and Design, Beijing 100045, China.
4. Beijing Key Laboratory of Traffic Engineering, Beijing Univ. of Technology, Beijing 100124, China.
5. Department Chief, Highway Monitoring and Response Center, Ministry of Transport of the P.R.C., Beijing 100088, China.