republic-os/legislation/us/states/in/2025/sb-103.md

type, title, description, jurisdiction, legislature, session, identifier, citation, classification, subjects, status, primary_sponsors, version_count, action_count, vote_count, first_action, last_action, source, source_identifier, source_url, source_hash, vintage, source_snapshot, retrieved_at, confidence, tags

type	title	description	jurisdiction	legislature	session	identifier	citation	classification	subjects	status	primary_sponsors	version_count	action_count	vote_count	first_action	last_action	source	source_identifier	source_url	source_hash	vintage	source_snapshot	retrieved_at	confidence	tags
Bill	Vehicle emissions.	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.	us/states/in	Indiana General Assembly	2025	SB 103	Indiana SB 103 (2025)	bill	AGENCIES; Department of Environmental Management (IDEM) COUNTIES; Lake COUNTIES; Porter ENVIRONMENT; Air Pollution FEDERAL GOVERNMENT; Generally GENERAL ASSEMBLY; Legislative Services Agency SENIOR CITIZENS STATE ELECTED OFFICIALS; Governor TRANSPORTATION; Landcraft	enacted	Dan Dernulc Harold Slager Rick Niemeyer	4	27	3	2025-01-08	2025-05-06	openstates	ocd-bill/9fd4e395-5334-427c-82dd-2fb02d091241	https://api.iga.in.gov/2025/bills/sb0103	4ed8c6d7ba220402466f9ffbd4b37d731b3dc963b015170923a4d4ad0d5ed40e	2026-07-01	https://data.openstates.org/daily/2026-07-01/public.pgdump	2026-07-06	reported	legislation bill us-in

Indiana SB 103 (2025) — Vehicle emissions.

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.

Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. Engrossed Senate Bill (H) (committee substitute) — source
2. Enrolled Senate Bill (S) (committee substitute) — source
3. Introduced Senate Bill (S) (committee substitute) — source
4. Senate Bill (S) (committee substitute) — source

Votes

• SB 103 - Slager - 3rd Reading — 91–1 (pass) · lower
• SB 103 - Niemeyer — 49–0 (pass) · upper
• SB 103 - Niemeyer - 3rd Reading — 47–0 (pass) · upper

Sponsors

• Dan Dernulc — primary (person)
• Harold Slager — primary (person)
• Rick Niemeyer — primary (person)
• Eric Bassler — coauthor (person)
• Julie Olthoff — cosponsor (person)
• Lonnie Randolph — coauthor (person)
• Mike Andrade — cosponsor (person)
• Mike Aylesworth — cosponsor (person)
• Rodney Pol — coauthor (person)

Timeline

The legislative action history — every referral, reading, and vote.

• 2025-01-08 Authored by Senator Niemeyer
• 2025-01-08 First reading: referred to Committee on Environmental Affairs reading-1, referral-committee
• 2025-01-27 Committee report: do pass, adopted committee-passage
• 2025-01-27 Senator Dernulc added as second author
• 2025-01-30 Senator Bassler added as coauthor
• 2025-01-30 Second reading: ordered engrossed reading-2
• 2025-01-30 Senator Randolph added as coauthor
• 2025-02-04 Placed back on second reading
• 2025-02-13 Reread second time: amended, ordered engrossed reading-2
• 2025-02-13 Amendment #1 (Niemeyer) prevailed; voice vote amendment-passage
• 2025-02-17 House sponsor: Representative Slager
• 2025-02-17 Third reading: passed; Roll Call 135: yeas 47, nays 0 passage, reading-3, reading-3
• 2025-02-17 Cosponsors: Representatives Olthoff, Aylesworth, Andrade
• 2025-02-17 Senator Pol added as coauthor
• 2025-02-18 Referred to the House referral
• 2025-03-03 First reading: referred to Committee on Environmental Affairs reading-1, referral-committee
• 2025-04-03 Committee report: amend do pass, adopted committee-passage
• 2025-04-07 Second reading: ordered engrossed reading-2
• 2025-04-08 Third reading: passed; Roll Call 392: yeas 91, nays 1 passage, reading-3, reading-3
• 2025-04-09 Motion to concur filed filing
• 2025-04-09 Returned to the Senate with amendments receipt
• 2025-04-22 Senate concurred with House amendments; Roll Call 479: yeas 49, nays 0
• 2025-04-23 Signed by the President Pro Tempore passage
• 2025-04-23 Signed by the Speaker passage
• 2025-05-06 Signed by the Governor executive-signature
• 2025-04-29 Signed by the President of the Senate passage
• 2025-05-06 Public Law 187 became-law

Source

OpenStates / OpenCivicData bulk snapshot 2026-07-01; origin ocd-bill/9fd4e395-5334-427c-82dd-2fb02d091241. Confidence: reported (aggregated from official Indiana legislature records).