A bill for an act relating to speed limits, including the speed limit range for which certain excessive speed violations cannot be considered for certain purposes and the default speed limit for all vehicular traffic, and making penalties applicable.
SF 378 increases Iowa's default speed limit for all vehicular traffic from 55 mph to 60 mph on roads without specific posted limits. This affects all drivers traveling on most state highways and roads where no special speed zones (like school districts at 25 mph or interstates at 70 mph) apply. The bill also allows transportation agencies to temporarily use approved stickers on existing signs when updating speed limits, rather than replacing signs immediately. It does not change existing speed limits for specific areas (like school zones) or penalties for speeding violations.
Bill status
signed
all 5 stages cleared
Introduction
Feb 2025
Committee Review
Apr 2026
Senate Passage
Apr 2026
House Passage
Apr 2026
Signed into Law
Jun 2026
Introduced Feb 19, 2025
Signed Jun 1, 2026
Maddy AI version diff · 3 comparisons
What changed between versions
Enrolled
→
Enrolled with Governor's Action
·
1 edit
·
May 5, 2026
MINOR
The bill was finalized with the Governor's approval, changing the status from 'Enrolled' to 'Enrolled with Governor's Action'. The substantive policy content regarding speed limits, penalties, and insurance rates remains unchanged, though the document formatting and signature blocks were updated to reflect the final approval.
Scope change
The bill's scope and applicability remain unchanged; this is a procedural update confirming the Governor's signature.
TECHNICAL
The document status was updated to reflect the Governor's approval, and the signature blocks were adjusted to include the Governor's name and approval date.
Floor votes · Senate Mar 18, 2025
How they voted
35–12
Passed · 2 other
Total votes 49
Mar 18, 2025
D
Democratic16
68% Nay
R
Republican33
96% Yea
Vote distribution
All Yea
All Nay
Mixed
No data
Full legislative history
Actions timeline
Total actions
34
Key actions
18
Committee
12
Amendments
4
Jun 1, 2026
Signed into law
Signed by Governor.
upper
Apr 22, 2026
Upper · Passed
Passed Senate, yeas 28, nays 16.
upper
Apr 22, 2026
Upper · Passed
Senate concurred with S-5153.
upper
Apr 2, 2026
Introduced
Message from House, with amendment S-5153.
upper
Apr 1, 2026
Lower · Passed
Passed House, yeas 76, nays 16.
lower
Apr 1, 2026
Lower · Passed
Committee amendment H-8231 out of order.
lower
Apr 1, 2026
Lower · Passed
Amendment H-8245 adopted.
lower
Apr 1, 2026
Lower · Passed
Committee amendment H-8231 deferred.
lower
Mar 19, 2026
Introduced
Amendment H-8245 filed.
lower
Mar 18, 2026
Introduced
Committee amendment H-8231 filed.
lower
Mar 18, 2026
Lower · Passed
Committee vote: Yeas, 19. Nays, 0. Excused, 2.
lower
Mar 18, 2026
Lower · Passed
Committee report, recommending amendment and passage.
lower
Mar 11, 2026
Legislature · Passed
Subcommittee recommends passage.
legislature
Mar 9, 2026
Legislature · Passed
Subcommittee Meeting: [].
legislature
Mar 5, 2026
Lower · Passed
Subcommittee reassigned: Jones, Gosa and Siegrist.
lower
Mar 3, 2026
Lower · Passed
Subcommittee: Meggers, Gosa and Henderson.
lower
Apr 1, 2025
Legislature · Passed
Subcommittee recommends passage.
legislature
Mar 27, 2025
Legislature · Passed
Subcommittee Meeting: 04/01/2025 8:30AM House Lounge.
legislature
Mar 26, 2025
Lower · Passed
Subcommittee: Bossman, Cooling and Mommsen.
lower
Mar 18, 2025
Upper · Passed
Passed Senate, yeas 36, nays 12.
upper
Feb 19, 2025
Upper · Passed
Committee report, approving bill.
upper
Feb 19, 2025
Introduced
Introduced, placed on calendar.
upper
0 primary · 0 co-sponsors
Sponsors
No sponsor information available.
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