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LOCOMOTIVES Act

S. 1779 Sen. Joni Ernst (R-IA) In committee
Bill text PDF
  1. Introduced May 15
  2. Committee May 15
  3. Passed Senate Next
  4. Passed House Not yet
  5. To President Not yet
  6. Law Not yet
Where it stands
In committee, May 15, 2025Next: Senate vote
531d ago May 15, 2025: Read twice and referred to the Committee on Environment and Public Works.
Final votes
No roll callsNo recorded vote on this bill yet
Lobbying
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Summary

This bill amends the Clean Air Act to prohibit states from setting their own emission standards for existing locomotives and engines used in locomotives. It expands the existing federal preemption on state emission standards for nonroad engines and vehicles to cover all locomotives engaged in interstate commerce as common carriers.

Sec. 2, Prohibition on state standards for existing locomotives and engines: The bill modifies Section 209(e)(1) of the Clean Air Act to broaden the categories of nonroad engines and vehicles for which states cannot set emission standards. It adds a new category (C) that explicitly covers locomotives or engines used in locomotives that are not already covered by subparagraph (B) and that are engaged in commerce, defined as providing common carrier railroad transportation for compensation under federal law.

Summary of the bill text as introduced in Senate (May 15, 2025), generated by SecBot from the official bill text; the Library of Congress summary is not yet published.

Official record from Congress.gov, the House Clerk and the Senate; lobbying from Lobbying Disclosure Act filings. Updated Oct 28, 2026.