A widespread power outage in San Francisco affected thousands of residents. It also left Waymo robotaxis stalled on city streets.

The self-driving robotaxi company suspended service amid a blackout that hit a third of the city's residents. Waymo suspended service of its driverless robotaxis in San Francisco during a blackout that hit many of the city's residents on Saturday night.

Robotaxis operated by Google’s Waymo LLC came to an abrupt halt across San Francisco on Saturday evening after a power outage uncovered a major flaw in the way the autonomous vehicles navigate.

Companies like Waymo hold themselves up as harbingers of a safer future on the roads, touting statistics like 82% fewer crashes in which an airbag deployed, and 92% fewer pedestrian collisions with injuries when compared to human drivers.

An outage hit San Francisco, crippling transit and forcing Waymo to halt driverless taxis as cars stalled at intersections.

More than 130,000 houses and businesses were without power on Saturday night, mostly in the northwest part of San Francisco, while transportation in the city, including self-driving cars, grinded to a halt.