San Francisco Mayor Daniel Lurie, once a vocal champion of the city as a testing ground for emerging technology, has publicly shifted his stance. Following a chaotic July 4 traffic jam caused by dozens of stranded Waymo robotaxis, Lurie is now demanding that state regulators impose stricter operational rules on autonomous vehicle companies. Main Developments Nearly two weeks after the Independence Day gridlock, Lurie sent a letter to the California Department of Transportation. In it, he cited two specific incidents—the July 4 Golden Gate Bridge fireworks show, which drew 100,000 spectators, and a widespread power outage in December—that each left dozens of Waymo vehicles stranded and paralyzed city traffic. The mayor argued that California’s current regulatory framework fails to address how autonomous vehicles should behave during major planned events or unexpected emergencies. He proposed four core operational capabilities that robotaxi companies must demonstrate before being allowed to operate at scale. Read also: Ransomware Attack Halts Coca-Cola's Fairlife Dairy Production Under Lurie’s vision, companies would need to immediately remove or relocate immobile robotaxis from active travel lanes. They would also have to adapt in real time by adjusting routes, service areas, and pickup or drop-off locations during disruptions. Additionally, operators would be required to share real-time operations data with local agencies, including information about service disruptions, the locations of stalled robotaxis, and recovery efforts. Finally, companies would have to prove through testing that their fleets can handle sudden influxes of people and traffic. Background California already has a stricter regulatory framework for autonomous vehicles than states like Texas and Arizona. Any company seeking to operate a robotaxi service must obtain two separate permits—one from the Department of Motor Vehicles and another from the Public Utilities Commission. Despite the tougher rules, San Francisco and the broader Bay Area have long served as the primary testbed for autonomous vehicle technology. Six companies, including Nuro, Waymo, and Zoox, currently hold driverless testing permits that allow vehicles to operate without a human safety operator behind the wheel. Waymo is the dominant player, with an estimated 1,000 robotaxis operating in the Bay Area. The company now runs services in 11 cities and reports completing more than 500,000 paid rides weekly. Other players include Amazon-owned Zoox and a premium robotaxi service operated by Uber, both testing or preparing to launch commercial operations. Tesla also has a branded robotaxi service in San Francisco, but it does not use driverless vehicles or hold the necessary permits. Instead, Tesla operates under a charter transportation permit, using its own drivers in vehicles equipped with an advanced driver-assistance system rather than fully autonomous software. Why It Matters Waymo’s scale has made it the focal point for regulators not just in San Francisco but nationwide. The July 4 incident trapped municipal shuttles and affected thousands of people, highlighting a critical gap in current oversight: how autonomous fleets behave during extraordinary events. Lurie noted that Waymo had voluntarily agreed to restrict service near the waterfront on July 4 and had assigned a representative to the city’s emergency center. Those measures failed, however, because robotaxis still entered heavy traffic outside the restricted zone. The mayor now argues that voluntary actions are no longer sufficient given the fleet’s size. The proposed requirements, Lurie said, are not intended to undermine autonomous vehicle development but to strengthen the technology by forcing it to handle real-world chaos. The outcome of this push could set a precedent for how other cities regulate robotaxis during emergencies. What's Next The California Department of Transportation has not yet responded publicly to Lurie’s letter. The state agencies that oversee autonomous vehicle permits—the DMV and the Public Utilities Commission—will likely be drawn into discussions about whether to adopt the mayor’s proposed statewide standards. Waymo has been contacted for comment, and any response could influence the regulatory trajectory. Meanwhile, other robotaxi operators will be watching closely, as new rules could affect their testing and deployment plans in California. The broader question remains whether any regulatory framework can keep pace with the rapid expansion of autonomous vehicle fleets, especially in cities that have welcomed them as testbeds for the future of transportation.