Indiana 2025 Regular Session Status: Enacted Bipartisan · 6 R · 3 D cosponsors

SB 103 — Vehicle emissions.

Last action — Public Law 187

  1. ✓
    Introduced
  2. ✓
    In Committee
  3. ✓
    Passed Senate
  4. ✓
    Passed House
  5. ✓
    To Executive
  6. 6
    Enacted

This bill has been enacted into law. Introduced January 08, 2025. Enacted.

Signed by Governor Mike Braun (Republican) on May 06, 2025.

Odds of enactment

High chance

Based on the sponsor, cosponsors, and committee posture, this bill has a high chance of becoming law.

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A statistical estimate from our own model of past outcomes — an insight, not a guarantee. Policymaking is volatile.

Prognosis

Likely to advance 78% · moderate confidence

  • Enacted

    Current position in the legislative process.

  • 9 sponsors

    3 primary, 6 co-sponsors signed on.

  • Bipartisan support

    Sponsored across 2 parties (6 R · 3 D) — cross-party backing.

Based on stage, sponsorship breadth, committee status, recorded votes, and cross-state momentum — a description of the observable signals, not a prediction.

Summary

Requires IDEM to: (1) perform a comprehensive evaluation of ambient air quality within nonattainment areas in Indiana; and (2) identify air pollution reduction or regulatory relief strategies that could accomplish certain goals with respect to the federal Clean Air Act.

Bill Text

We don't have the full text on file for this bill yet.

Read SB 103 on the official Indiana source →

Action History

  1. Public Law 187

  2. Signed by the Governor

  3. Signed by the President of the Senate

  4. Signed by the Speaker

  5. Signed by the President Pro Tempore

  6. Senate concurred with House amendments; Roll Call 479: yeas 49, nays 0

  7. Returned to the Senate with amendments

  8. Motion to concur filed

  9. Third reading: passed; Roll Call 392: yeas 91, nays 1

  10. Second reading: ordered engrossed

  11. Committee report: amend do pass, adopted

  12. First reading: referred to Committee on Environmental Affairs

  13. Referred to the House

  14. Senator Pol added as coauthor

  15. Cosponsors: Representatives Olthoff, Aylesworth, Andrade

  16. Third reading: passed; Roll Call 135: yeas 47, nays 0

  17. House sponsor: Representative Slager

  18. Amendment #1 (Niemeyer) prevailed; voice vote

  19. Reread second time: amended, ordered engrossed

  20. Placed back on second reading

  21. Senator Randolph added as coauthor

  22. Second reading: ordered engrossed

  23. Senator Bassler added as coauthor

  24. Senator Dernulc added as second author

  25. Committee report: do pass, adopted

  26. First reading: referred to Committee on Environmental Affairs

  27. Authored by Senator Niemeyer

Sponsors

Sponsorship breakdown

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3 sponsors · 6 co-sponsors · 141 not signed on

Sponsors (3)

Co-sponsors (6)

Not signed on (141)

141 members have not signed on to this bill.

Show all 141 →

"Not signed on" means a member has not sponsored or co-sponsored this bill — it does not imply opposition. Members flagged Voted No have a recorded No vote on this bill.

Whip count is in markup. Polling the chamber and every recorded vote this session. Only the first open is slow. It’s instant for you after this. Calling the roll · Tallying · Engrossing

Subjects

environment transportation
Cross-referencing the record. Reading this bill against every other bill in the corpus by meaning, not keywords. Only the first open is slow. It’s instant for you after this. Matching · Ranking · Engrossing

Frequently asked questions

What does SB 103 do?
Requires IDEM to: (1) perform a comprehensive evaluation of ambient air quality within nonattainment areas in Indiana; and (2) identify air pollution reduction or regulatory relief strategies that could accomplish certain goals with respect to the federal Clean Air Act.
Who sponsors SB 103?
SB 103 is sponsored by Mike Andrade (Democrat), Mike Aylesworth (Republican), Julie Olthoff (Republican), Harold Slager (Republican), Rodney Pol (Democrat), Lonnie Randolph (Democrat), Eric Bassler (Republican), Dan Dernulc (Republican), and Rick Niemeyer (Republican).
What is the current status of SB 103?
This bill has been enacted into law. Introduced January 08, 2025. Enacted.
Where can I track SB 103?
Track SB 103 free on One Click Politics — get push/email alerts when it moves.

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Last checked for changes 3 months ago · updated continuously

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