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The Mobility Letter

Actionable Insights on AI, Mobility & Cities for the regulators, transportation professionals and policymakers who need to know what works, what's next, and what to ignore.

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Microtransit at Scale: Via CEO Daniel Ramot on Citywide Transit and the AI Coming for the Control Room

How a DOT with no transit history, no appetite for risk, and a skeptical public built a microtransit system that works? Arlington, Texas with 400,000 people, 99 square miles, 3 failed transit votes over 25 years— built citywide public transit for a fraction of the cost of conventional fixed-route transit. A ride is now available within a two-block walk of every resident. I sits down with Daniel Ramot, CEO of Via, and Alicia Winkelblech, Director of Transportation for the City of Arlington,...

Jinhua's Memo June 27th 2026 A Transit Playbook for Mid-Size Cities: What a City That Voted It Down Three Times Can Teach Every DOT How Arlington, Texas (400,000 people, 99 square miles, 3 failed transit votes) built citywide public transit for a fifth of the cost: four moves and one discipline any mid-size city can copy. Most transit stories are big-city stories: New York’s subway, London’s congestion charge, the trains of Tokyo and Paris. The places where most Americans actually live, the...

Jinhua Zhao Inside Transport for London's Secret Sauce: How TfL Got London’s Businesses to Fund a £19B Railway, and the 4 Moves US Cities Can Steal Cities keep copying London's transport. They're copying the wrong layer. The lessons that actually transfer: fund transit on agglomeration instead of minutes saved, respect the availability trap, ask the question you can't answer and treat governance as a question of power. The thing worth taking home isn't the Oyster card or the congestion...

JZ / Issue #3 Human Agency and AV Deployment When you step into an autonomous vehicle (AV), you relinquish lower-level controls—acceleration, braking, lane changes. Most riders barely notice and happily let go. When an AV chooses your route, most people accept it—though some may insist, “I’d rather take the scenic river road.” Meanwhile: Liberty Mutual, an insurance company, would steer you along the path with the lowest crash probability; Climate Action Network (CAN) would choose the route...

Six Governance Models for AV Deployment in Cities

Jinhua Zhao Six Governance Models for AV Deployment in Cities AVs are not the problem. Governing them is. We’ve studied global experiments in London, Boston, Singapore, Stockholm, and beyond—and developed six governance models for AV deployment in cities: 🔹 1. Laissez-Faire No public intervention. Pure market competition. AV providers cherry-pick the most profitable areas. Innovation thrives—but often with little regard for public interest. Can an open AV market self-correct? Unlikely. 🔹 2....

AVs readiness Cities Aren’t Ready for Autonomous Vehicles — Here’s How They Can Be

Jinhua Zhao Cities Aren’t Ready for Autonomous Vehicles. Here’s why that’s a problem and how they can be. Autonomous vehicles are arriving, but cities aren’t ready. Ten years ago, cities were energized by the promise of autonomous vehicles. In 2015, the buzz was loud. Cities ran pilots, hosted workshops, and published white papers. But the tech wasn’t ready. Cities grew disillusioned. Now the tech is real—and scaling. But the cities? Here is a sobering reality: most U.S. cities have no AV...