Waymo robotaxis immobilized during San Francisco traffic incidents
Waymo robotaxis became immobilized during a July 4 fireworks event and during a July 18 power outage in San Francisco, causing significant traffic disruptions affecting thousands of drivers and municipal buses. The incidents prompted San Francisco's mayor to request stricter state regulations for autonomous vehicle services to address operations during extraordinary circumstances.
What happened
Waymo robotaxis became immobilized in San Francisco during multiple incidents. On 4 July 2026, during a fireworks display at the Golden Gate Bridge that attracted over 100,000 people, numerous Waymo vehicles became stranded and caused traffic paralysis in the city. On 18 July 2026, Waymo suspended robotaxi service for one hour in San Francisco due to a power outage affecting approximately 7,000 PG&E customers; the company stated it was performing 'temporary adjustments' and that 'highway routes were not available'.
Mayor Daniel Lurie sent a letter to the California State Department of Transportation requesting stricter regulations for autonomous vehicle services, citing the traffic incidents and noting that these events showed California's regulatory framework was insufficient to handle extraordinary situations during large events. Lurie referenced two recent situations involving congestion of Waymo vehicles: a widespread blackout in December and the July 4th fireworks display. The mayor proposed that autonomous vehicle companies demonstrate four fundamental operational capabilities and that state standards be established to prevent similar future problems.
Reported impact
Thousands of drivers were trapped for hours during the traffic chaos caused by immobilized Waymo vehicles on 4 July. Municipal buses were also affected by the traffic disruption. Approximately 7,000 PG&E customers in San Francisco experienced service suspension on 18 July.
Index analysis
The incidents demonstrate that Waymo's autonomous vehicles were unable to operate reliably during exceptional circumstances such as major public events and power outages. The robotaxis' inability to respond appropriately to these extraordinary conditions resulted in significant traffic disruptions.
Governance controls
Mayor Lurie stated that the incidents highlighted the need for a review of current regulations governing autonomous vehicle operation. He proposed that companies be required to immediately remove or relocate robotaxis from active traffic lanes and be able to adjust routes and pickup locations in response to extraordinary situations.
Classification
Sources and evidence
This record was researched and written by the Index, based on the following original reporting.