Waymo is shipping a software update to help its robotaxis navigate disabled traffic lights during power outages “more decisively,” the company said Tuesday in a blog post that explains why its self-driving vehicles got stuck at intersections during a blackout in San Francisco this past weekend.

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When the traffic lights went out, Waymo’s robotaxis got a little too cautious at intersections. With no red-yellow-green to cue drivers, the rule is to treat the intersection as a four-way stop. Indeed, Waymo’s cars are programmed to do this, but it seems the scale of the outage over the weekend was just too much to handle.

Alphabet Inc.’s Waymo said it would strengthen its automated software to better handle power outages after its self-driving taxis froze and caused traffic jams during a major electricity

SALT LAKE CITY, UTAH / ACCESS Newswire / December 23, 2025 / Recent service disruptions involving Waymo autonomous vehicles in San Francisco have drawn attention to a core challenge in autonomous mobility: dependence on a single network or network access technology.

Waymo's driverless cars added to the misery of San Francisco's massive power outage over the weekend by coming to a halt at downed traffic intersections. And some are questioning the autonomous vehicle company's preparedness for emergencies.

A San Francisco supervisor is calling for a hearing to look into Waymo’s emergency operations after the autonomous robotaxis caused traffic chaos during a blackout over the weekend. The days-long power outage began Saturday and as of Monday,