1. Graduate Student, Construction Engineering and Project Management Program, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Texas at Austin, Austin, TX.
2. Research Associate, Center for Transportation Research, Univ. of Texas at Austin, Austin, TX.
3. Assistant Director, Center for Transportation Research, Univ. of Texas at Austin, Austin, TX.
4. Professor, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Texas at Austin, Austin, TX.