Randy B. Machemehl, Ph.D., P.E., is a Professor of Transportation Engineering at The University of Texas and former Director of the Center for Transportation Research. He was in private engineering practice as a staff member of Wilbur Smith and Associates before joining the faculty of The University of Texas at Austin in 1978. His research interests include transportation system operations, public transportation systems planning and design, traffic data acquisition, traffic simulation, optimization, and bicycle safety. His is a successful researcher who has worked on more than 300 research projects for the Texas Department of Transportation and the Federal Highway Administration, but he is most passionate about teaching and mentoring students.