The Federal Motor Vehicle Safety Standards were written, decades ago, for cars with a human at the wheel. They refer to the "driver's seat," the "steering wheel," and "the driver" as fixed reference points for where crash dummies sit and how airbags deploy. That language becomes ambiguous the moment a vehicle has no steering wheel and no designated driver position. NHTSA's response was a final rule, "Occupant Protection for Vehicles With Automated Driving Systems," 87 FR 18560, published March 30, 2022 and effective September 26, 2022. It updates the crashworthiness standards so they apply cleanly to ADS-equipped vehicles without traditional manual controls.

The rule's central move is to preserve the level of protection while fixing the vocabulary. NHTSA states that the amendments maintain existing regulatory text wherever possible, specifically so the rule is read as keeping crash protection where it is rather than relaxing it. The agency frames the change as resolving ambiguity — making the standards meaningful for designs that, in its words, "lack a steering wheel or other driver controls" — not as creating a lighter regime for driverless cars. The rule is explicitly limited to the crashworthiness standards, the set of FMVSS that govern how a vehicle protects occupants in a crash.

This final rule provides regulatory certainty that, despite their innovative designs, vehicles with ADS technology must continue to provide the same high levels of occupant protection that current passenger vehicles provide.— Occupant Protection for Vehicles With Automated Driving Systems, 87 FR 18560, source

What changes, and what deliberately does not

The substantive changes are about seating and terminology, not crash-test severity. In a vehicle with no steering wheel, the front outboard seat that used to be "the driver's seat" still exists as a seating position, and the rule clarifies how the occupant-protection requirements — airbags, seat belts, the dummy positioning used in compliance testing — attach to that position when no driver controls are present. The agency's stated approach is to avoid "unnecessary terminology" and to keep the existing text intact where it can, so that a vehicle with and without ADS functionality is held to one unified set of crashworthiness requirements.

The rulemaking record also illustrates how literal the old language was. The agency notes that the proposal addressed states where an ADS vehicle "contains a driver's seat (i.e., manually operated driving controls are available, but not necessarily functional during ADS operation)," the occupant of that seat is classified by the air bag system as a child, and the vehicle is in a state that does not require a driver. Those are precisely the edge cases that arise only once you decouple the front-left seat from the act of driving — a seat that looks like a driver's seat but, during automated operation, is just another passenger position. The rule's job is to make the crash standards address that seat sensibly.

The scope line NHTSA drew

What this rule is not matters as much as what it is. It does not authorize, certify, or set performance requirements for the automated driving system itself — it does not say an ADS is safe to operate, nor does it establish how the driving function must behave. It is a crashworthiness rule: it governs how a vehicle protects the people inside it during a collision, regardless of whether a human or a computer was driving. NHTSA's separate efforts on ADS operational safety — including its later proposed AV STEP framework — sit outside this rule. By confining itself to occupant protection, the 2022 rule answers one bounded question: when a crash happens, must a driverless car protect its occupants as well as a conventional car? The rule's answer, in its own words, is that it must continue to provide the same high levels of protection.

Which standards the rule actually touches

The rulemaking is concrete about which Federal Motor Vehicle Safety Standards it amends and how. The agency identifies FMVSS No. 208, "Occupant crash protection," as "one of the most important aspects of this rulemaking," because that standard "includes several terms that differentiate a 'driver's' position from a front 'passenger's' seating position." Compliance with FMVSS No. 208 is assessed "in a frontal crash test using adult-sized crash test dummies," and the standard also sets "advanced air bag" requirements meant to minimize air-bag risk to children and small-statured adults. Translating those driver-versus-passenger terms for a vehicle with no driver position is the core work the rule performs.

The changes ripple across a cluster of related standards. NHTSA modified FMVSS No. 207, the driver's-seat requirement, so that "a driver's seat would be required only" for vehicles with steering controls, which "an occupant-less vehicle necessarily lacks." It made no change to FMVSS No. 209, "Seat belt assemblies," because that is an equipment standard, and none to FMVSS No. 210, "Seat belt assembly anchorages," because that standard's requirements apply only to designated seating positions. The agency also "decided not to move forward at this time" with changing the FMVSS No. 226 ejection-mitigation readiness-indicator requirement, deferring controls-and-displays questions to a separate rulemaking.

The rule fixes its own timeline as precisely. The effective date is September 26, 2022, with "optional early compliance" permitted before that date, and petitions for reconsideration were due on or before May 16, 2022. One illustrative edge case the agency addressed is child suppression: NHTSA states that "children should not occupy the 'driver's' position when the vehicle is operating in ADS mode and steering controls are present, given that the driver's seating position has not been designed to protect children in a crash" — a hazard that arises only once the front-left seat is decoupled from the act of driving.

For anyone tracking the regulatory state of automated vehicles, this rule is a useful marker of method. Rather than write a sweeping new code for driverless cars, NHTSA chose to surgically update existing standards so they remain applicable as vehicle designs change — preserving the protection floor while removing the assumption of a human driver. The full text, including the section-by-section changes to each affected FMVSS, is public in the Federal Register, which is what makes the scope and the intent verifiable rather than a matter of interpretation.