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HR 3164 117th Congress House Transportation and Public Works

Hot Cars Act of 2021

Introduced: July 26, 2021 See on congress.gov
This bill died when the 117th Congress ended
It never became law before the 117th Congress (2021–2022) adjourned, and bills don't carry over to the next Congress. It would have to be reintroduced. You can still save it for reference, but it won't receive updates.
 Everywhere this bill has been 3 steps
Introduced
In committee
Reported out
Passed House
Passed Senate
To President
Became law
May 13, 2021
Referred to the Subcommittee on Consumer Protection and Commerce.
May 12, 2021
Referred to the House Committee on Energy and Commerce.
May 12, 2021
Introduced in House
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 Plain-English summary Congressional Research Service

Hot Cars Act of 2021

This bill requires safety measures in passenger cars to reduce injuries or deaths from heatstroke and other harms to occupants of unattended vehicles.

Specifically, the National Highway Traffic Safety Administration (NHTSA) must issue a motor vehicle safety standard that requires certain new passenger motor vehicles to include a system that detects and warns of the presence of an unattended occupant in the passenger compartment. The NHTSA must issue the final rule prescribing the safety standard within two years after the enactment of this bill, with full compliance with the standard required not later than two years after the rule is issued.

After the standard is issued, the Department of Transportation must periodically contract with an independent third party to study retrofitting passenger motor vehicles with technologies and products that detect and warn when there is an unattended occupant in the passenger compartment. The study must identify relevant technologies and products to retrofit vehicles and provide recommendations about testing such technologies and products. Information about the performance of the technologies and products must be published on the NHTSA's website.

What's happening now May 13, 2021

Referred to the Subcommittee on Consumer Protection and Commerce.

 Related & companion bills 1
 Bill text 1 version

Source documents hosted by congress.gov.

 Committees of jurisdiction 2
Cite this page click to expand
APA
U.S. Congress. (2026). H.R. 3164: Hot Cars Act of 2021. 117th Congress. Open America. https://openamerica.io/bill/117-HR-3164/
MLA
"H.R. 3164: Hot Cars Act of 2021." 117th Congress, 2026, Open America, https://openamerica.io/bill/117-HR-3164/.
Bluebook (legal)
H.R. 3164, 117th Cong. (2026), https://openamerica.io/bill/117-HR-3164/.
Markdown link
[H.R. 3164: Hot Cars Act of 2021](https://openamerica.io/bill/117-HR-3164/)
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