SF Supervisor to Launch Inquiry on Waymo's July Fourth Traffic Meltdown San Francisco streets turned to gridlock after a special Fourth of July Golden Gate Bridge fireworks show. City leaders are working to understand the root causes. More than 30 Waymos became stuck in the only parking area for the fireworks show on July 4, 2026, blocking parking for hours. (Courtesy of Dr. R, AGI Summit 2026) Following San Francisco’s Fourth of July traffic meltdown, one supervisor is demanding answers from city departments about how autonomous vehicle companies like Waymo and “insufficient transit options” contributed to the gridlock. Supervisor Bilal Mahmood told KQED on Monday he planned to submit a letter of inquiry at Tuesday’s Board of Supervisors meeting, seeking information from the city’s Department of Emergency Management, Fire Department, and Municipal Transportation Agency on how autonomous vehicles impacted public transit service, emergency response and egress from an event that far exceeded attendance expectations. More than 100,000 people descended on the northern part of the city for the special Golden Gate Bridge fireworks show, according to Charles Lutvak, spokesperson for San Francisco Mayor Daniel Lurie. Social media posts from people who ventured to the northern end of the city to view the fireworks described a “Waymo traffic nightmare,” where dozens of robotaxis blocked traffic, leading to lengthy delays. Mahmood said due to the backlog of cars in part caused by Waymo, he was forced to walk an hour home from Fisherman’s Wharf, as public transit and rideshare were rendered useless. “It was clear that they were compounding an already congested traffic situation and weren’t moving themselves,” Mahmood said. Waymo declined to provide specific numbers on how many of its vehicles experienced issues or needed to be manually moved by staff on the night of the Fourth, but said some vehicles