Waymo is implementing a software update for its autonomous vehicles after a significant power outage in San Francisco disrupted operations. The blackout, caused by a fire at a PG&E substation, left 30% of the city without electricity, rendering traffic signals inoperative. As a result, multiple robotaxis stalled at dark intersections, contributing to severe congestion. The update aims to enhance the recognition of large-scale outages, allowing better navigation and reducing reliance on remote assistance during such events.