The TBD National Center organized and sponsored a 3-day symposium, titled “Back to Foundations: Travel Demand Analysis in a Fast Evolving Transportation Landscape”. The symposium brought together over 30 experts from across the globe in academia, industry, and the public sector. This invitation-only event, hosted at the University of Texas at Austin from October 29 to November 1, 2023, focused on the intersection of technology and travel behavior in today’s rapidly evolving transportation landscape.