NHTSA warns robotaxi companies after 2-minute ambulance delay

The US government's top auto safety regulator issued a formal warning to autonomous vehicle makers Wednesday, citing a pattern of robotaxis blocking ambulances and fire trucks during emergencies.

The National Highway Traffic Safety Administration has documented multiple incidents in which driverless vehicles operated by Waymo, Zoox and other companies interfered with emergency responders, including a Waymo that blocked an ambulance for two minutes during a mass shooting response in Austin, Texas, in March.

"Every second matters when law enforcement officers, firefighters, or paramedics are answering a call because lives are on the line," NHTSA Administrator Jonathan Morrison wrote in a letter to autonomous vehicle developers. "A vehicle that cannot safely interact with emergency responders is a danger to the public."

Morrison gave companies until the end of July to present solutions and said enforcement action remains possible if they fail to address the issue. The warning comes as the robotaxi industry accelerates its expansion: Alphabet Inc.'s Waymo operates nearly 4,000 vehicles across 11 US cities and this week announced plans to enter four additional markets — Denver, Las Vegas, San Diego and Tampa. Amazon.com Inc.'s Zoox and Tesla Inc. are also racing to deploy commercial robotaxi services.

First Responders Report 'Backsliding' in AV Performance

San Francisco Fire Department Chief Patrick Rabbitt told regulators in a closed-door meeting in March that Waymo vehicles had been "freezing and blocking" fire stations and fire trucks, according to a Wired report. Austin officials described similar problems, with robotaxis failing to recognize hand signals from police officers and blocking emergency vehicles during active incidents.

The complaints represent what NHTSA called "a clear pattern of driverless AVs interfering with law enforcement and other first responders." Morrison said the vehicles have also failed to properly respond to traffic cones, flashing lights, smoke and flames — basic visual cues that human drivers handle routinely.

An Austin police official acknowledged during the same meeting that autonomous vehicle technology had been deployed "too fast, in too many cars, before it was actually ready," according to attendees.

No Federal Standard as Industry Scales Up

The US currently has no uniform federal standard governing how autonomous vehicles must interact with emergency responders. California and Arizona require robotaxi operators to submit emergency-response plans before deploying, but most states lack such protocols.

The regulatory gap is widening as the industry grows. Goldman Sachs projects the US commercial robotaxi fleet will reach 62,800 vehicles by 2030, representing a market of nearly $19 billion. Larger fleets mean more interactions with emergency scenes — and more potential for dangerous interference.

The Trump administration recently eased rules that allow robotaxi makers like Tesla to deploy vehicles without steering wheels or mirrors, accelerating the path to commercial deployment. Morrison's warning signals that federal safety oversight is tightening in parallel.

"Public trust on the roads is earned, not owed," Morrison wrote. He demanded that autonomous vehicles meet the same standard as human drivers in responding to emergency scenes and law enforcement commands.

NHTSA plans to meet individually with each affected company by the end of July to review proposed solutions. If those solutions fall short, Morrison said, the agency retains the authority to take enforcement action — a threat that introduces new regulatory uncertainty for an industry racing to scale.

This article is for informational purposes only and does not constitute investment advice.