If you read that article and check the latest status, the NHTSA was supposed to make a rule by 2024 and it's 2026 now. [1]

In their latest report to Congress they are not any closer to a rule because, amongst other reasons, all of the impairment detection methods are currently too inaccurate to use. [2]

I personally think it's very unlikely they will pass a rule by 2027 and that it might never get made. I think they'll just keep sending Congress a yearly update saying the same thing: "Sorry, none of the solutions work so we can't make a rule."

[1] https://www.regulations.gov/docket/NHTSA-2022-0079

[2] https://www.nhtsa.gov/sites/nhtsa.gov/files/2026-03/Report-t...