NHTSA's impaired-driving tech rule due by November 2027

The Halt Drunk Driving Act, part of the 2021 Infrastructure Investment and Jobs Act, directs NHTSA to require advanced impaired-driving prevention tech in all new cars: passive monitoring that can block vehicle operation. The agency missed its 2024 deadline, with final rules now due by November 2027. The law contains no remote "kill switch" for police.

• Law passed in 2021 as part of $1.2 trillion infrastructure package, Section 24220
• Tech must passively detect impairment and prevent or limit vehicle operation
• NHTSA missed 2024 deadline; final rules now due by November 2027
• Law gives police no authority to remotely disable cars