Vehicle emissions.
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 status
signed
all 5 stages cleared
Introduction
Jan 2025
Committee Review
Apr 2025
Senate Passage
Apr 2025
House Passage
Apr 2025
Signed into Law
May 2025
Introduced Jan 8, 2025
Signed May 6, 2025
Maddy AI version diff · 3 comparisons
What changed between versions
Enrolled Senate Bill (S)
→
Senate Bill (S)
·
5 edits
MODERATE
The bill was converted from an enrolled act to a regular Senate bill, changing its status from a finalized law to a proposed measure awaiting further legislative action. The substantive policy content regarding vehicle emissions testing exemptions for seniors remains unchanged, but the procedural status now requires passage by both chambers before becoming law.
Scope change
The bill's substantive scope regarding vehicle emissions testing exemptions for individuals aged 65 and older remains unchanged; only the legislative status changed from enrolled to pending Senate bill.
TIMELINE
The bill's effective date remains July 1, 2025, and the report deadline remains June 30, 2026, with no substantive changes to these dates.
REQUIREMENT
The core requirement for IDEM to study the environmental impact of exempting vehicles owned by seniors aged 65+ from emissions testing remains identical.
The requirement for IDEM to coordinate with the EPA and submit findings to the governor and legislative services agency remains unchanged.
TECHNICAL
Added committee report documentation showing favorable passage by the Senate Committee on Environmental Affairs with 11 yeas and 0 nays.
Removed enrolled act signatures and certification language, converting the document to a regular Senate bill format pending House action.
Floor votes · Senate Feb 17, 2025 · House Apr 8, 2025
How they voted
47–0
Passed · 3 other
Total votes 50
Feb 17, 2025
D
Democratic10
90% Yea
R
Republican40
95% Yea
Vote distribution
All Yea
All Nay
Mixed
No data
Full legislative history
Actions timeline
Total actions
27
Key actions
10
Committee
2
Amendments
1
May 6, 2025
Signed into law
Signed by the Governor
executive
Apr 29, 2025
Upper · Passed
Signed by the President of the Senate
upper
Apr 23, 2025
Lower · Passed
Signed by the Speaker
lower
Apr 23, 2025
Upper · Passed
Signed by the President Pro Tempore
upper
Apr 22, 2025
Upper · Passed
Senate concurred with House amendments; Roll Call 479: yeas 49, nays 0
upper
Apr 8, 2025
Lower · Passed
Third reading: passed; Roll Call 392: yeas 91, nays 1
lower
Apr 3, 2025
Lower · Passed
Committee report: amend do pass, adopted
lower
Feb 17, 2025
Upper · Passed
Third reading: passed; Roll Call 135: yeas 47, nays 0
upper
Feb 13, 2025
Upper · Passed
Amendment #1 (Niemeyer) prevailed; voice vote
upper
Jan 27, 2025
Upper · Passed
Committee report: do pass, adopted
upper
3 primary · 6 co-sponsors
Sponsors
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