Congress opens door for untested car equipment on public roads
S. 4679 — A bill to amend title 49, United States Code, to allow the introduction of certain noncompliant motor vehicle equipment in interstate commerce for testing purposes, and for other purposes. · Filed by Gary Peters (D-MI) · 1 cosponsor · Introduced Jun 3, 2026 · Referred to committee
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What it does
This bill amends federal motor vehicle safety law to allow manufacturers to temporarily introduce noncompliant vehicle equipment into interstate commerce for testing purposes. Currently, the law prohibits importing or selling any noncompliant motor vehicles or equipment; this bill carves out a testing exception by inserting language about 'items of motor vehicle equipment' into the existing prohibition, creating a pathway for companies to test new or modified equipment that doesn't yet meet federal safety standards.
Why we flagged it
The bill's operative mechanism is a narrow carve-out from federal safety compliance requirements, permitting temporary introduction of noncompliant equipment into interstate commerce for testing. This is a regulatory exemption, not a safety standard or consumer protection measure.
What the text implies
- The bill does not define 'testing purposes,' 'testing period,' or oversight mechanisms — it amends only the prohibition language, leaving scope and duration of testing to be defined elsewhere in regulation or by agency interpretation.
- Noncompliant equipment introduced 'for testing' could theoretically remain in use if testing is not monitored or if equipment is not recalled after testing concludes.
The full analysis lists 5 implications of this text.
Who stands to gain
automotive manufacturers; automotive equipment suppliers; vehicle technology companies