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Bills from the 2025–26 session

Senate Bill 273

Camera monitor systems as an alternative to mirrors for commercial motor vehicles

Topics: Bus and truck, Motor vehicle: Equipment

Stopped before the full Senate voted

The recommended passing it, but the full Senate never voted on it. The last day for votes this session was Mar 19, 2026. To try again, a lawmaker would have to start a new bill.

  1. Introduced, passed

    May 21, 2025

  2. Committee, passed

    Approved

  3. Senate vote, stopped here

    Stopped here. The full Senate never voted on it.

  4. Assembly vote, not reached

  5. Governor, not reached

  6. Law, not reached

Latest entry in the official record, Mar 23, 2026: “Failed to pass pursuant to ⁠”

Read the bill

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The same bill was also filed in the Assembly as AB 271. That version became law.

What it would have done

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

4 senators are its ⁠. All 4 are Republicans.

16 more lawmakers ⁠.

See all 20 names

Authors (4)

Signed on in support (16)

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.

Senate Committee on Transportation and Local Government vote on an amendment

Passed, 5 to 0 · Sep 30, 2025

No member-by-member record exists for this vote. Committee votes and some older sessions record totals only.

Official motion: “Report adoption of Senate Amendment 1 to Senate Substitute Amendment 1 recommended by Committee on Transportation and Local Government, Ayes 5, Noes 0”. Official record · This vote on its own page

Senate Committee on Transportation and Local Government vote on an amendment

Passed, 5 to 0 · Sep 30, 2025

No member-by-member record exists for this vote. Committee votes and some older sessions record totals only.

Official motion: “Report adoption of Senate Substitute Amendment 1 recommended by Committee on Transportation and Local Government, Ayes 5, Noes 0”. Official record · This vote on its own page

Senate Committee on Transportation and Local Government vote to recommend it

Passed, 5 to 0 · Sep 30, 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 and Local Government, Ayes 5, Noes 0”. Official record · This vote on its own page

What happened

  1. Mar 23, 2026

    The session ended, and the bill died with it.

  2. Oct 14, 2025

    1 more senator signed on in support.

  3. Sep 30, 2025

    The committee voted to recommend passing it, 5 to 0.

  4. Sep 30, 2025

    “Report adoption of Senate Substitute Amendment 1 recommended by Committee on Transportation and Local Government, Ayes 5, Noes 0” (the official wording)

  5. Sep 30, 2025

    “Report adoption of Senate Amendment 1 to Senate Substitute Amendment 1 recommended by Committee on Transportation and Local Government, Ayes 5, Noes 0” (the official wording)

  6. Sep 23, 2025

    The committee held a public hearing.

  7. May 21, 2025

    Sent to the Senate Committee on Transportation and Local Government.

  8. May 21, 2025

    Introduced in the Senate.

See the official record, word for word
  1. May 21, 2025 · Senate

    Introduced by Senators Wimberger, James, Jacque and Nass; cosponsored by Representatives Spiros, Franklin, Callahan, Gundrum, Gustafson, Knodl, Kreibich, Miresse, Moses, Murphy, Mursau, O'Connor, Penterman, Steffen and Wichgers

  2. May 21, 2025 · Senate

    Read first time and referred to Committee on Transportation and Local Government

  3. Jun 30, 2025 · Senate

    Senate Amendment 1 offered by Senator Wimberger

  4. Aug 4, 2025 · Senate

    Senate Substitute Amendment 1 offered by Senator Wimberger

  5. Sep 22, 2025 · Senate

    Senate Amendment 1 to Senate Substitute Amendment 1 offered by Senator Wimberger

  6. Sep 23, 2025 · Senate

    Public hearing held

  7. Sep 26, 2025 · Senate

    Executive action taken

  8. Sep 30, 2025 · Senate

    Report adoption of Senate Amendment 1 to Senate Substitute Amendment 1 recommended by Committee on Transportation and Local Government, Ayes 5, Noes 0

  9. Sep 30, 2025 · Senate

    Report adoption of Senate Substitute Amendment 1 recommended by Committee on Transportation and Local Government, Ayes 5, Noes 0

  10. Sep 30, 2025 · Senate

    Report passage as amended recommended by Committee on Transportation and Local Government, Ayes 5, Noes 0

  11. Sep 30, 2025 · Senate

    Available for scheduling

  12. Oct 14, 2025 · Senate

    Senator Ratcliff added as a coauthor

  13. Mar 23, 2026 · Senate

    Failed to pass pursuant to Senate Joint Resolution 1

Terms on this page

Committee

A small group of lawmakers that looks at a bill first. Most bills never leave committee.

More in the glossary

Senate Joint Resolution 1

The session's calendar. Any bill not passed by its last voting day dies.

Official term: Failed to pass pursuant to SJR 1. 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

Committee

A small group of lawmakers that looks at a bill first. Most bills never leave committee.

More in the glossary

Senate Joint Resolution 1

The session's calendar. Any bill not passed by its last voting day dies.

Official term: Failed to pass pursuant to SJR 1

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