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Waymo suspends service after power outage hit San Francisco

Monday, December 22, 2025

Waymo suspends service after power outage hit San Francisco

What

Waymo's autonomous robotaxi service was temporarily halted due to a significant power outage in San Francisco, which caused multiple vehicles to stall in traffic. The outage began at 1:09 p.m. and peaked two hours later, affecting traffic signals and possibly mobile networks, complicating the situation for the self-driving cars. As a result, Waymo's operations were disrupted, leading to traffic congestion and public concerns about the reliability of autonomous vehicles during emergencies.

Where

San Francisco, California, USA

When

The power outage occurred on December 21, 2025, with Waymo suspending services shortly thereafter.

Key Factors

  • Power outage caused by a fire at a Pacific Gas & Electric substation
  • Disruption of traffic signals affecting autonomous vehicle navigation
  • Public demonstration of the vulnerabilities of autonomous systems during infrastructure failures

Takeaways

  • Autonomous vehicle systems must have robust contingency plans for power outages and infrastructure failures.
  • The incident highlights the need for improved integration between autonomous vehicles and urban infrastructure.
  • Companies should assess the resilience of their technology against utility disruptions.
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