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Driverless cars do sometimes get in the way of emergency crews, and US regulators now treat it as a real operational safety problem. On July 8, 2026, the National Highway Traffic Safety Administration (NHTSA) said it had documented a pattern of driverless vehicles entering active emergency scenes, blocking ambulances or firefighters, and failing to react to flashing lights, flares, smoke, fire and traffic cones. The “fatal flaw” framing goes further than the evidence. No source here ties a death to the problem, and nobody has published a national count of incidents. What exists is a federal warning, one older local tally, and a new set of California rules.
What NHTSA actually said in July 2026
NHTSA’s public call to action, issued July 8, 2026, reports “multiple instances” of automated vehicles with no human driver interfering with police and first responders. The behaviors it lists:
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- driving into active emergency scenes;
- blocking ambulances or fire apparatus;
- not responding to flashing lights, flares, smoke, fire or traffic cones.
The agency urges developers and operators to make fixing this a priority. The announcement does not list individual incidents, name operators or give a total. Its headline is a statement of position from NHTSA Administrator Jonathan Morrison: “An Automated Vehicle That Cannot Safely Interact With First Responders is a Danger to the General Public.” Read it as the agency’s stance, not as a technical standard or a formal legal finding.
The numbers that exist, and their limits
Three figures circulate around this topic. Each is narrower than it sounds.
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At least 85 incidents in San Francisco
A June 2024 California Assembly Transportation Committee analysis reported that the San Francisco Fire Department (SFFD) recorded at least 85 incidents between January 2023 and February 2024 in which autonomous vehicles negatively affected firefighter operations or interfered with emergency response. This is a local count from one department, covering about 14 months, relayed second-hand through a legislative document. It is not a federal figure, an audited dataset, or a current rate, and it should not be stretched to other cities or to the present day.
44 million driverless miles
The US Department of Justice’s Office of Community Oriented Policing Services (COPS Office) guidance, published in September 2025, cites an early-2025 report from the Autonomous Vehicle Industry Association (AVIA) counting more than 44 million miles driven by driverless vehicles on US public roads. That number comes from an industry group, not from DOJ’s own measurement. It gives a sense of exposure, but without a count of incidents it cannot be turned into a rate of interference per mile.
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378 survey respondents
The same DOJ guidance draws on a joint white paper built from a survey of 378 members of law enforcement and first-responder agencies, plus focus groups and expert interviews. That describes how the paper was researched. It is not an incident count, and it is not a representative poll of the public.
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A human driver who meets a police officer waving traffic through, a fire hose across the road, or a paramedic gesturing to back up can read the situation and improvise. An automated driving system (ADS) has to detect the scene and then respond predictably to direction. The DOJ COPS Office sorts responder contact with these vehicles into three kinds:
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- Direct interaction: physically dealing with the vehicle.
- Indirect interaction: signaling by hand, siren or lights.
- Information exchange: getting registration or driver documentation.
The guidance says responders need to be able to recognize an ADS-dedicated vehicle, signal it to stop and stay stationary, and find ownership information when no one is behind the wheel. It also calls for training on vehicle-specific hazards, such as electric power storage and wiring, and on safely disabling or parking the vehicle. DOJ’s own framing of the accountability gap is blunt: “How can a law enforcement officer stop a vehicle for a traffic violation and get the car’s registration information if there is no driver?”
Practical questions follow from those points: what happens when a vehicle stops inside an emergency perimeter, whether crews can quickly reach the right remote contact, whether the vehicle moves when directed, and whether it can be made to stay put. The sources show these issues matter. They do not show that every operator handles them the same way, so no universal answer is available.
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California’s 2026 rules
The California Department of Motor Vehicles (DMV) announced adopted updates to its autonomous vehicle regulations on April 28, 2026. The emergency-related provisions:
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| First-responder interaction plans | Companies must maintain a plan for dealing with responders, with annual updates. |
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| Two-way communication | A live channel between responders and the company, with a 30-second response time. |
| Emergency geofencing | Local officials can issue a temporary “do not enter” or “restricted area” directive. Vehicles already inside must leave, and manufacturers must direct their fleets out within two minutes of receiving it. |
| Enforcement | Violations can lead to permit restrictions or suspension. |
DMV says some provisions take effect immediately while others phase in on later dates, so check the operative date for a specific requirement before assuming it is already enforceable. These are California measures only, not a national rule. DMV Director Steve Gordon said the updates “support the growth of the AV industry by enhancing public safety and transparency while adding additional accountability for AV manufacturers.” That is a policy rationale from the agency head, not an independent evaluation of results.
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Why reporting rules matter as much as response rules
A vehicle that stalls across a lane or sits in a fire scene may never hit anything, so collision reports alone miss it. In November 2024 the California Public Utilities Commission (CPUC), which oversees passenger-service safety while the DMV oversees vehicle safety and operations, enhanced its reporting requirements for autonomous passenger-service operators. They now report “stoppage events” and trip-level non-collision incidents in addition to collisions. Collision reports must reach both CPUC and NHTSA within one day. This is also California’s framework, not every state’s.
A checklist for judging any jurisdiction’s approach
Before comparing one place’s rules with another’s, confirm the jurisdiction and effective date. Then check each of these:
- How fast must the operator answer a responder?
- Can responders identify a driverless vehicle and reach the right contact?
- Can they command it or override it manually?
- Can officials clear an area by geofence, and how quickly must vehicles leave?
- Are non-collision stoppages reported?
- Is it clear which agency has oversight?
What is and isn’t established
The evidence supports a narrow conclusion. Federal regulators say the pattern exists, California has set concrete response and reporting duties, and DOJ guidance shows responders still lack settled procedures for vehicles with no driver. Nothing in these sources provides a nationwide incident database, an operator-by-operator comparison, or an independent causal study. Those gaps limit what can be claimed about how often this happens or which companies are worst, but they do not suggest the problem is absent. Until aggregate data is published, any single number, including the 85-incident San Francisco count, should travel with its place, period and source.
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