How Tokyo Differs from San Francisco for Autonomous Deployment
Road width, driver behavior, weather, and mapping density — a technical comparison of the two most important robotaxi cities.
San Francisco taught the industry how to run autonomous fleets. Tokyo will teach the industry how to scale them. The two cities differ across almost every operational variable that matters.
Driver behavior and predictability
Tokyo drivers are markedly more predictable than San Francisco drivers. Lane discipline is high, signaling is consistent, and pedestrian behavior at crossings is orderly. That reduces edge-case density substantially.
Road geometry
Tokyo has narrower streets and more one-way networks. That increases planner difficulty in specific neighborhoods but reduces high-speed decision complexity overall.
Mapping density
Japan's HD mapping ecosystem, led by Dynamic Map Platform, provides one of the densest and best-maintained base layers in the world. Operators can inherit that quality instead of paying to build it.
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