1. Graduate Student Researcher and Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Univ. of California at Berkeley, 1353 S. 46th St., Building 452, Richmond, CA 94804 (corresponding author).
2. Postdoctoral Scholar, Dept. of Civil and Environmental Engineering, Univ. of California at Davis, 1353 S. 46th St., Building 452, Richmond, CA 94804.
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of California at Berkeley, 421 Davis Hall, Berkeley, CA 94720.
4. Associate Professor, Dept. of Civil and Environmental Engineering, Pavement Research Center, Univ. of California at Davis, Engineering III, Room 3153, One Shields Ave., Davis, CA 95616.