1. Assistant Professor, Dept. of Safety Engingeering, Univ. of Incheon, 12-1 Songdo-dong, Yeonsu-Gu, Incheon 406-772, Korea; formerly, Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana–Champaign, Urbana, IL 61801.
2. Postdoctoral Research Associate, Center for Advanced Infrastructure and Transportation (CAIT), Rutgers, State Univ. of New Jersey, Piscataway, NJ 08854-8058.
3. Assistant Scholar, Dept. of Civil and Environmental Engineering, Florida International Univ., Miami, FL 33174 (corresponding author).
4. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana–Champaign, Urbana, IL 61801.
5. Assistant Professor, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Texas, Austin, TX 78712-0273.