1. Visiting Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of South Florida, 4202 E. Fowler Ave., ENB118, Tampa, FL 33620. E-mail: pan_liu@hotmail.com
2. Professor, Dept. of Civil and Environmental Engineering, Univ. of South Florida, 4202 E. Fowler Ave., ENB118, Tampa, FL 33620. E-mail: lu@eng.usf.edu
3. Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Univ. of South Florida, 4202 E. Fowler Ave., ENB118, Tampa, FL 33620. E-mail: hu@eng.usf.edu
4. Senior Transportation Planner, Florida DOT-System Planning Office, 605 Suwannee St. #19, Burns Building–SRD Unit 3920, Tallahassee, FL 32399. E-mail: gary.sokolow@dot.state.fl.us