NHTSA is preparing to run an experiment on how the proliferation of selectable "drive modes" affects the people behind the wheel. In a notice submitted to the Office of Management and Budget (OMB) on June 8, 2026, the agency described a one-time voluntary study examining how different drive-mode implementations affect driver attention and performance compared with standard interfaces. For an industry that has turned drive modes — Sport, Eco, Comfort, Track, one-pedal, off-road, and an expanding menu of software-defined variants — into a marketing and differentiation lever, the prospect of federal scrutiny on whether those modes degrade attention is worth watching.
The mechanics of the notice are procedural. Under the Paperwork Reduction Act of 1995, NHTSA must clear any new information collection through OMB, and it published a 60-day comment notice on February 11, 2026 before this submission. The agency reports it received two comments. Now the Information Collection Request moves to OMB for review and approval. None of this is a regulation. It is the agency funding research — and the subject of the research is the modern vehicle's human-machine interface.
"This is a new collection of information for which NHTSA intends to seek OMB approval for a one-time voluntary experiment which will examine how different drive-mode implementations affect driver attention and performance compared to standard interfaces."— Federal Register, NHTSA notice (Doc. 2026-11456), source
Drive modes are a software feature with a safety surface
The software-defined vehicle has made drive modes cheap to add and lucrative to ship. A mode is no longer a hardware throttle map; it is a software profile that can reconfigure steering weight, regenerative braking, throttle response, suspension, display layout, and ambient cues — and it can be added, changed, or sold over the air. That economic reality has pushed the number and complexity of modes upward across the market. NHTSA's experiment puts a question to that trend: do different drive-mode implementations change how much attention a driver can devote to the road, relative to a standard interface?
That framing — "compared to standard interfaces" — is the analytically important part. The agency is not asking whether drive modes are good or bad in the abstract. It is asking whether specific implementations create attentional cost. The comparison baseline matters because it determines what counts as a problem. A mode that requires the driver to navigate a menu, interpret an unfamiliar display, or relearn the car's response is a candidate for an attention penalty; a mode that changes vehicle behavior transparently is not. The study is built to tell those cases apart.
Why the business desk should track a voluntary experiment
Voluntary, one-time experiments are not regulation, and it would be wrong to report this as a coming mandate. But research like this is how regulators build the evidence that later supports design guidance, consumer-information programs, or — much further down the road — performance criteria. The phrase in the notice is "best practices," which is the soft end of the regulatory spectrum: guidance, not a rule. Still, a manufacturer that ships an attention-heavy mode interface and later finds it cited against the agency's own best-practices research is in a worse position than one that designed to the research from the start.
There is also a low-comment signal here. NHTSA received only two comments on the February notice. That is a quiet docket, which usually means the affected industry has not yet treated the topic as a fight. For companies whose differentiation rests on elaborate, software-rich drive-mode menus, that quiet is an opportunity: the methodology and framing of "drive-mode best practices" are still being shaped, and the input cost is a comment letter, not a lobbying campaign.
The practical read for OEMs and HMI teams
First, recognize the convergence. This drive-mode experiment and NHTSA's parallel interest in assessing contextual driver-monitoring systems point at the same regulatory theme: the cabin interface as a safety surface. Manufacturers building both elaborate mode menus and the monitoring systems meant to police driver attention are operating in a space the agency is actively studying from two directions at once.
Second, design for the comparison the study is making. If the research baseline is a "standard interface," then a mode whose attentional cost is indistinguishable from standard operation is the safe harbor. HMI teams that can demonstrate, with their own human-factors data, that a mode does not degrade attention relative to standard operation are building the evidence they may someday need.
Third, keep the financial framing honest. There is no cost, capex, or warranty implication in this notice. The implication is design-strategic and reputational.
How best-practices research becomes a standard of care
The reason a voluntary experiment deserves attention from the risk and business desk is the way "best practices" research migrates into liability over time. Federal human-factors guidance rarely arrives as a binding mandate; it arrives as a reference document — a set of design recommendations that NHTSA publishes and that the industry is then expected to know about. Once such guidance exists, it quietly becomes part of the standard of care a manufacturer is measured against. A plaintiff in a distraction-related crash, or an agency in a defect investigation, can point to published best-practices research and ask why a given drive-mode interface diverged from it. That is how soft guidance acquires hard consequences. The experiment NHTSA is preparing is the upstream source of exactly that kind of reference document. A company that participates in or tracks the research, and that designs its mode interfaces to be defensible against it, is buying cheap insurance against an expensive future argument. The software-defined vehicle made it trivial to add drive modes; this experiment is the first sign that the federal government wants to understand what that proliferation costs the driver's attention. The companies that treat drive modes as a human-factors problem, not just a marketing feature, are the ones who will read the eventual best-practices research as a confirmation rather than a correction.