Assembly Bill 271
Camera monitor systems as an alternative to mirrors for commercial motor vehicles
Topics: Bus and truck, Motor vehicle: Equipment
Became law
The governor signed it on Dec 10, 2025. It's .
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Introduced, passed
May 19, 2025
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Committee, passed
Approved
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Assembly vote, passed
Passed Oct 7, 2025
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Senate vote, passed
Passed Oct 14, 2025
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Governor, passed
Signed
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Law, here now
2025 Wisconsin Act 51
Latest entry in the official record, Dec 10, 2025: “Published 12-10-2025”
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The same bill was also filed in the Senate as SB 273. That version died when the session ended.
Terms on this page
Wisconsin Act
The number a bill gets when it becomes law, like 2025 Wisconsin Act 12.
Official term: Act. More in the glossary
Legislative Reference Bureau
The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.
Official term: LRB analysis. More in the glossary
Author
A lawmaker who formally puts a bill forward. The text itself is drafted by the Legislative Reference Bureau.
Official term: Author, coauthor. More in the glossary
Signed on in support
Lawmakers who back a bill without being one of its authors, often from the other chamber.
Official term: Cosponsor. More in the glossary
Roll call
A vote where each lawmaker's yes or no is recorded by name.
Official term: Roll call vote. More in the glossary
What it does
Summary by the , the Legislature's nonpartisan drafting office. It's their wording, not ours.
Current law prohibits any person from operating a motor vehicle on a highway unless the vehicle is equipped with a mirror to provide a view of the roadway to the rear of the vehicle. Current regulations of the Federal Motor Carrier Safety Administration (FMCSA) require commercial motor vehicles (CMVs) to be equipped with mirrors on each side of vehicle positioned to provide a view of the highway to the rear and along both sides of the CMV. FMCSA has created an exemption to this requirement for CMVs equipped with a specified camera monitor system.
This bill provides that a CMV may be equipped with a camera monitor system approved by FMCSA as an alternative to mirrors that would otherwise be required.
Who's behind it
15 representatives are its . 14 are Republicans and 1 is a Democrat.
6 more lawmakers .
See all 21 names Hide the names
Authors (15)
- Calvin Callahan · Republican, Assembly
- Ben Franklin · Republican, Assembly
- Rick Gundrum · Republican, Assembly
- Gus Gustafson · Republican, Assembly
- Dan Knodl · Republican, Assembly
- Rob Kreibich · Republican, Assembly
- Vinnie Miresse · Democrat, Assembly
- Clint Moses · Republican, Assembly
- Dave Murphy · Republican, Assembly
- Jeff Mursau · Republican, Assembly
- Jerry O'Connor · Republican, Assembly
- Will Penterman · Republican, Assembly
- John Spiros · Republican, Assembly
- David Steffen · Republican, Assembly
- Chuck Wichgers · Republican, Assembly
Signed on in support (6)
- André Jacque · Republican, Senate
- Jesse James · Republican, Senate
- Steve Nass · Republican, Senate
- Melissa Ratcliff · Democrat, Senate
- Shelia Stubbs · Democrat, Assembly
- Eric Wimberger · Republican, Senate
Versions and amendments
Every text the Legislature printed for this bill, including proposed changes. Each opens on the Legislature's site.
How lawmakers voted
There were 3 votes on this bill.
Assembly Committee on Transportation vote on an amendment
Passed, 6 to 0 · Sep 19, 2025
No member-by-member record exists for this vote. Committee votes and some older sessions record totals only.
Official motion: “Report Assembly Substitute Amendment 1 adoption recommended by Committee on Transportation, Ayes 6, Noes 0”. Official record · This vote on its own page
Assembly Committee on Transportation vote to recommend it
Passed, 6 to 0 · Sep 19, 2025
No member-by-member record exists for this vote. Committee votes and some older sessions record totals only.
Official motion: “Report passage as amended recommended by Committee on Transportation, Ayes 6, Noes 0”. Official record · This vote on its own page
Senate vote
Passed, 3 to 2 · Oct 13, 2025
No member-by-member record exists for this vote. Committee votes and some older sessions record totals only.
Official motion: “Public hearing requirement waived by committee on Senate Organization, pursuant to Senate Rule 18 (1m), Ayes 3, Noes 2”. Official record · This vote on its own page
What happened
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Dec 10, 2025
The new law was published.
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Dec 10, 2025
The governor signed it. It became 2025 Wisconsin Act 51.
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Dec 4, 2025
Sent to the governor.
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Oct 14, 2025
The Senate passed it too.
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Oct 14, 2025
1 more senator signed on in support.
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Oct 13, 2025
“Public hearing requirement waived by committee on Senate Organization, pursuant to Senate Rule 18 (1m), Ayes 3, Noes 2” (the official wording)
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Oct 8, 2025
Sent to the Senate Committee on Senate Organization.
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Oct 7, 2025
The Senate received it.
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Oct 7, 2025
The Assembly passed it.
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Oct 7, 2025
The Assembly adopted it.
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Oct 7, 2025
1 more representative signed on in support.
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Sep 19, 2025
Sent to the Assembly Committee on Rules.
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Sep 19, 2025
The committee voted to recommend passing it, 6 to 0.
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Jun 25, 2025
The committee held a public hearing.
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May 19, 2025
Sent to the Assembly Committee on Transportation.
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May 19, 2025
Introduced in the Assembly.
See the official record, word for word Hide the official record
- May 19, 2025 · Assembly
Introduced by Representatives Spiros, Franklin, Callahan, Gundrum, Gustafson, Knodl, Kreibich, Miresse, Moses, Murphy, Mursau, O'Connor, Penterman, Steffen and Wichgers; cosponsored by Senators Wimberger, Jacque, James and Nass
- May 19, 2025 · Assembly
Read first time and referred to Committee on Transportation
- Jun 25, 2025 · Assembly
Assembly Amendment 1 offered by Representative Spiros
- Jun 25, 2025 · Assembly
Public hearing held
- Jul 30, 2025 · Assembly
Assembly Substitute Amendment 1 offered by Representative Spiros
- Sep 16, 2025 · Assembly
Executive action taken
- Sep 19, 2025 · Assembly
Report Assembly Substitute Amendment 1 adoption recommended by Committee on Transportation, Ayes 6, Noes 0
- Sep 19, 2025 · Assembly
Report passage as amended recommended by Committee on Transportation, Ayes 6, Noes 0
- Sep 19, 2025 · Assembly
Referred to committee on Rules
- Sep 22, 2025 · Assembly
Assembly Amendment 1 to Assembly Substitute Amendment 1 offered by Representative Spiros
- Oct 3, 2025 · Assembly
Withdrawn from Committee on Rules and referred to calendar of 10-7-2025
- Oct 7, 2025 · Assembly
Representative Stubbs added as a coauthor
- Oct 7, 2025 · Assembly
Read a second time
- Oct 7, 2025 · Assembly
Assembly Amendment 1 to Assembly Substitute Amendment 1 adopted
- Oct 7, 2025 · Assembly
Assembly Substitute Amendment 1 adopted
- Oct 7, 2025 · Assembly
Ordered to a third reading
- Oct 7, 2025 · Assembly
Rules suspended
- Oct 7, 2025 · Assembly
Read a third time and passed
- Oct 7, 2025 · Assembly
Ordered immediately messaged
- Oct 7, 2025 · Senate
Received from Assembly
- Oct 8, 2025 · Senate
Read first time and referred to committee on Senate Organization
- Oct 8, 2025 · Senate
Available for scheduling
- Oct 13, 2025 · Senate
Public hearing requirement waived by committee on Senate Organization, pursuant to Senate Rule 18 (1m), Ayes 3, Noes 2
- Oct 13, 2025 · Senate
Placed on calendar 10-14-2025 pursuant to Senate Rule 18(1)
- Oct 14, 2025 · Senate
Senator Ratcliff added as a cosponsor
- Oct 14, 2025 · Senate
Read a second time
- Oct 14, 2025 · Senate
Ordered to a third reading
- Oct 14, 2025 · Senate
Rules suspended to give bill its third reading
- Oct 14, 2025 · Senate
Read a third time and concurred in
- Oct 14, 2025 · Senate
Ordered immediately messaged
- Oct 14, 2025 · Assembly
Received from Senate concurred in
- Oct 16, 2025 · Assembly
Report correctly enrolled on 10-16-2025
- Dec 4, 2025 · Assembly
Presented to the Governor on 12-4-2025
- Dec 10, 2025 · Assembly
Report approved by the Governor on 12-9-2025. 2025 Wisconsin Act 51
- Dec 10, 2025 · Assembly
Published 12-10-2025
Terms on this page
Wisconsin Act
The number a bill gets when it becomes law, like 2025 Wisconsin Act 12.
Official term: Act. More in the glossary
Legislative Reference Bureau
The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.
Official term: LRB analysis. More in the glossary
Author
A lawmaker who formally puts a bill forward. The text itself is drafted by the Legislative Reference Bureau.
Official term: Author, coauthor. More in the glossary
Signed on in support
Lawmakers who back a bill without being one of its authors, often from the other chamber.
Official term: Cosponsor. More in the glossary
Roll call
A vote where each lawmaker's yes or no is recorded by name.
Official term: Roll call vote. More in the glossary
From the Wisconsin Legislature's official record, checked Sep 15, 2026. See the source
Wisconsin Act
The number a bill gets when it becomes law, like 2025 Wisconsin Act 12.
Official term: Act
Legislative Reference Bureau
The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.
Official term: LRB analysis
Signed on in support
Lawmakers who back a bill without being one of its authors, often from the other chamber.
Official term: Cosponsor
Roll call
A vote where each lawmaker's yes or no is recorded by name.
Official term: Roll call vote