Zoox, which Amazon bought in 2020, runs a fleet of 105 self-driving taxis with no steering wheel or pedals. On June 20, one of those taxis drove into a traffic lane filled with heavy smoke from an active fire. The car braked hard and stopped. A remote operator then guided it backwards while first responders laid down cones to block the road. No injuries were reported, but the car had essentially become an obstacle at an emergency scene.
Zoox investigated, talked with US road safety regulators through late June and early July, and formally decided on July 7 to recall all 105 vehicles. The software update was pushed to the fleet by July 15. The fix adds the ability to detect heavy smoke and respond to it, a capability the cars did not have before.
This is Zoox's fourth recall since March 2025. The earlier ones covered a hard-braking problem, a collision with a passenger car in Las Vegas, and an incident where one of its taxis was struck by an e-scooter rider. Each recall is a software update, not a physical repair, which makes it faster to fix but also means the problems only get discovered once they happen on public roads.
The bigger story is the pattern. On July 8, the US National Highway Traffic Safety Administration sent a formal letter to every self-driving car company operating in the country. The letter documented vehicles driving into active emergency scenes, blocking ambulances and fire trucks, and failing to respond to flashing lights, road flares, traffic cones, smoke, and fire. The agency said this has been happening repeatedly, across multiple companies, for months.
Waymo, which runs the largest robotaxi fleet in the US with around 4,000 vehicles in cities including Los Angeles, Phoenix, and San Francisco, is the most visible target. A previous investigation found that first responders had to physically move Waymo vehicles out of the way in at least six separate incidents. In one case, an officer was responding to a mass shooting. In another, a Waymo drove through an active crime scene near an airport while armed officers were searching for a suspect.
The regulator's position is worth understanding clearly. It is not asking these companies to handle unusual, once-in-a-decade situations. It is asking them to do what any licensed driver is already required to do: pull over for emergency vehicles, avoid active scenes, and read the road. Failing to do this, the agency said, is a "functional insufficiency," not a minor technical gap. Human drivers face fines or jail time for blocking emergency responders. The letter is a signal that the same standard will eventually apply to the companies operating these vehicles.
For businesses watching this space, the takeaway is straightforward. Self-driving technology is expanding fast. Zoox offers free rides in Las Vegas and San Francisco and is testing in Miami, Austin, and several other cities. Its commercial launch, which requires a regulatory exemption because its vehicles have no manual controls, depends on building and holding regulator trust. Every recall either builds that trust, by showing the company self-corrects quickly, or erodes it, by showing the gaps are still wide.
At four recalls in five months, the trust-building is clearly ongoing work.