Nothing in Section 24220 of the 2021 infrastructure law lets a police officer, a dispatcher or any other outside party stop a moving car from a distance. The phrase “kill switch,” which has driven much of the online alarm over the drunk-driving provision, does not appear in the section at all.
What the section does require is narrower and sits inside the vehicle: technology that passively spots an impaired driver and then limits or prevents the car from running.
The two systems Section 24220 defines
The operative text, reproduced in the Federal Register notice that began the rulemaking, defines “advanced drunk and impaired driving technology” as one of three things. One is a system that can “passively monitor the performance of a driver” to identify impairment and “prevent or limit motor vehicle operation if an impairment is detected.” A second is a system that can “passively and accurately detect” a blood alcohol concentration at or above the legal limit and prevent or limit operation. The third combines the two.
“Passive” has a specific meaning there. The National Highway Traffic Safety Administration reads it as a system that functions “without direct action from vehicle occupants,” so a breathalyzer a driver must blow into, like current DADSS designs, would not qualify.
Police and remote control missing from the text
Stephen Edelstein of The Drive put the point directly: the phrase “kill switch” is nowhere to be found in Section 24220, nor does it give the police or anyone else authority to remotely shut down a car. The statute’s list is short, which is part of why the claim of a hidden police override has no text to rest on, and every element sits on the vehicle side of the dashboard: a monitor, a sensor and a response that limits operation.
The agency’s own documents agree on what is missing. The Federal Register copy of the advance notice contains no references to law enforcement data collection or remote monitoring requirements, and the NHTSA notice page frames the rulemaking as one about performance requirements for technology that works inside the vehicle, with questions to the public on technology maturity, consumer acceptance and privacy. The privacy question is one the agency put to the public, and no authority for outside access to a car follows from it.
The people who back the law say the same thing in plainer terms. Chris Swonger, president of the Distilled Spirits Council of the United States, said in coverage carried by Carrier Management: “There is no switch, there’s no government control, there is no sharing of data.” Swonger’s council has an interest in the debate, but his description matches the statutory definitions above, which name no outside party with any power over a vehicle and no enforcement role of any kind.
The legitimate objections that remain
The kill-switch label overstates the law, and the genuine disputes are different ones. The Drive’s concern is about who decides: rather than a person judging fitness to drive, automated systems “constantly monitoring drivers,” likely using sensors and cameras already built into new cars, would hold that authority, and Edelstein warns that a small tweak to the law is all that would separate the current text from actual government intervention.
Automakers raise a technical objection. NBC Washington reports their warning that even a one-in-10,000 false-positive rate could prevent thousands of unimpaired drivers from starting or continuing a trip every day, including in emergencies such as swerving on a snowy road. Florida Gov. Ron DeSantis opposed the law and compared it to Orwell’s “1984,” and Rep. Thomas Massie led an unsuccessful effort to defund it; the House voted it down 268-164 in February 2026.
Supporters point to the toll. Mothers Against Drunk Driving says the technology could save up to 10,100 lives a year once fully implemented, citing more than 13,000 deaths in drunk-driving crashes in 2021. Rana Abbas Taylor, whose sister was killed with her family by a drunk driver in Kentucky in 2019, said nearly 40 people are killed every day on U.S. roads by drunk drivers.
A rule still unwritten
The law’s formal name, the Honoring Abbas Family Legacy to Terminate Drunk Driving Act, commemorates a Kentucky family killed in January 2019, and its shorthand, the HALT Act, is how most coverage refers to Section 24220. None of the technology choices has been made. NHTSA has not issued a final rule, and the statute leaves the choice among monitoring, alcohol detection and a combination to the agency’s rulemaking. NHTSA has said only that it is “assessing developing technologies for potential deployment,” as NBC Washington quotes it. Debate over what that rule should say will turn on those definitions, so the live questions are about accuracy, data and who controls a vehicle’s own sensors, not about a police remote that the statutory text never creates.
This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.
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