The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Stated as firm, per waymo.com's post dated January 29, 2026: "Starting today, Bay Area travelers can catch their next flight at San Francisco International Airport via convenient and fully autonomous Waymo rides."
SF Standard: Waymo[1] "will begin operating at San Francisco International Airport on Thursday"; SFO is "the third international airport in the U.S. to offer a commercial robotaxi service"; quotes Mayor Lurie.
TechCrunch: history of the permit - a failed 2023 bid to map SFO, a March 2025 mapping permit, and a September testing and operations pilot permit.
SFist: "as of Thursday morning, Waymo[1] vehicles began taking a limited number of paying passengers to and from the airport"; AirTrain from the Rental Car Center.
ABC7: SFO announced its approval on Thursday; pickups at the Rental Car Center Level 1 curbside; the two testing phases; the San Francisco Taxi Workers Alliance's objection.[1]
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