Jarrett Walker is an international consultant in public transit network design and policy, based in Portland, Oregon. He has been a full-time consultant since 1991 and has led numerous major planning projects in cities and towns of all sizes, across North America, Australia, and New Zealand. He is also the author of Human Transit: How clearer thinking about public transit can enrich our communites and our lives (Island Press, 2011). He is President of Jarrett Walker + Associates, a consulting firm that provides advice and planning services North America.

Rachel Zack is a policy strategist at Remix, where she is researching policy related to dockless programs, ride-hailing and autonomous vehicles. She is exploring how cities can work collaboratively with private mobility providers to deliver on safer infrastructure and more equitable mobility systems. Before joining Remix, Rachel consulted for agencies across the country on strategic planning for shared mobility and autonomous vehicles. Her work in the field received the Caltrans Excellence in Transportation Award in WTS Innovative Transportation Solutions Award.