1. Materials Research Engineer, Indiana Dept. of Transportation, West Lafayette, IN 47906-1329, US (Corresponding author), e-mail: jlee@indot.in.gov
2. Traffic and Safety Research Engineer, Indiana Dept. of Transportation, West Lafayette, IN 47906-1329, US.
3. Senior Researcher, Korea Institute of Construction Technology, Goyang-Si Gyeonggi-Do, KR.
4. Assistance Professor, Department of Civil Engineering, Chonbuk National University, Jeonju-City, Jeonbuk, KR, e-mail: lee2012@jbnu.ac.kr