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- Director, National Center for Sustainable Transportation
- Co-Director, BicyclingPlus Research Collaborative
- Associate Director for Education, ITS-Davis
- Professor, Environmental Science and Policy
- TTP Graduate Advisor
2130 Wickson Hall
- Director, Energy Futures Program
- Co-Director, BicyclingPlus
- Assistant Professor, Design
- Professor, Civil and Environmental Engineering
- Professor, Mechanical and Aerospace Engineering
- Professor Emeritus, Graduate School of Management
- Professor, Electrical and Computer Engineering
- Professor, Civil and Environmental Engineering
