Wisconsin 2025 Regular Session Status: Introduced 4 R cosponsors

SB 273 — Relating to: camera monitor systems as an alternative to mirrors for commercial motor vehicles.

Last action — Failed to pass pursuant to Senate Joint Resolution 1

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  1. 1
    Introduced
  2. 2
    In Committee
  3. 3
    Passed Senate
  4. 4
    Passed Assembly
  5. 5
    To Executive
  6. 6
    Enacted

This bill has been introduced in the Senate. Introduced May 21, 2025. It must pass committee before a floor vote.

Next likely step: a committee referral and hearing.

Prognosis

Advancing 38% · moderate confidence

Where this bill stands today.

Odds of enactment

Low

How often bills like it became law.

  • Introduced

    Current position in the legislative process.

  • 19 sponsors

    1 primary, 18 co-sponsors signed on.

  • Single-party support

    Sponsorship is currently within one party (4 R).

  • Cleared a recorded vote

    Passed 3 recorded votes so far.

Prognosis reads this bill's own signals — stage, sponsorship breadth, committee status, recorded votes and cross-state momentum. Odds come from a model trained on which bills have become law.

Summary

An Act to create 347.40 (4) of the statutes;

Bill Text

What changed in the latest version

30 added · 11 removed

Plain-language change summary

The new version of SB 273 allows commercial motor vehicles to use camera monitor systems instead of traditional mirrors, following federal safety standards. This change provides flexibility for vehicle operators and may improve safety by enabling better visibility. It matters because it modernizes regulations to include technological advancements, potentially enhancing efficiency and reducing blind spots for drivers.

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Latest
- 2026 LEGISLATURE LRBa0407/1 ZDW:emw SENATE AMENDMENT 1, TO SENATE SUBSTITUTE AMENDMENT 1, TO SENATE BILL 273 September 22, 2025 - Offered by SenatIMBERGER .
- 2026 LEGISLATURE LRB-2911/1 ZDW:cjs SENATE BILL 273 May 21, 2025 - Introduced by Senators IMBERGER , AMES , ACQUE and N ASS, cosponsored by Representatives PIROS, FRANKLIN, CALLAHAN , GUNDRUM , G USTAFSON, K NODL , K REIBICH, M IRESSE, M OSES, M URPHY , M URSAU , O'C ONNOR, PENTERMAN , STEFFEN and W ICHGERS.
At the locations indicated, amend the substitute amendment as follows:
Referred to Committee on Transportation and Local Government.
1.
A N A CT to create 347.40 (4) of the statutes;
Page 1, line 8:
relating to:
delete that line and substitute Xfederal motor vehicle safety standards as an alternative to mirrors.
camera monitor systems as an alternative to mirrors for commercial motor vehicles.
In this subsection, "commercial motor vehicleY includes a commercial motor vehicle operated in intrastate commerce.Y.
Analysis by the Legislative Reference Bureau 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.
The people of the state of Wisconsin, represented in senate and assembly, do enact as follows:
S ECTION 1.
347.40 (4) of the statutes is created to read:
347.40 (4) Notwithstanding sub.
(1) and 49 CFR 393.80 (a), a commercial - 2026 Legislature - 2 - LRB-2911/1 ZDW:cjs SENATE BILL 273 S ECTION 1 motor vehicle may be equipped with a camera monitor system approved by the federal motor carrier safety administration as an alternative to mirrors.
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Action History

  1. Failed to pass pursuant to Senate Joint Resolution 1

  2. Senator Ratcliff added as a coauthor

  3. Available for scheduling

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

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

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

  7. Executive action taken

  8. Public hearing held

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

  10. Senate Substitute Amendment 1 offered by Senator Wimberger

  11. Senate Amendment 1 offered by Senator Wimberger

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

  13. 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

Sponsors

  • Spiros · Cosponsor
  • Franklin · Cosponsor
  • Callahan · Cosponsor
  • Gundrum · Cosponsor
  • Gustafson · Cosponsor
  • Knodl · Cosponsor
  • Kreibich · Cosponsor
  • Miresse · Cosponsor
  • Moses · Cosponsor
  • Murphy · Cosponsor
  • Mursau · Cosponsor
  • O'Connor · Cosponsor
  • Penterman · Cosponsor
  • Steffen · Cosponsor
  • Wichgers · Cosponsor
  • Eric Wimberger · Primary
  • Jesse James · Cosponsor
  • André Jacque · Cosponsor
  • Steve Nass · Cosponsor

Sponsorship breakdown

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1 sponsors · 18 co-sponsors · 113 not signed on

Sponsors (1)

Co-sponsors (18)

  • Spiros
  • Franklin
  • Callahan
  • Gundrum
  • Gustafson
  • Knodl
  • Kreibich
  • Miresse
  • Moses
  • Murphy
  • Mursau
  • O'Connor
  • Penterman
  • Steffen
  • Wichgers
  • James, Jesse Republican
  • Jacque, André Republican
  • Nass, Steve Republican

Not signed on (113)

113 members have not signed on to this bill.

Show all 113 →

"Not signed on" means a member has not sponsored or co-sponsored this bill — it does not imply opposition. Members flagged Voted No have a recorded No vote on this bill.

Whip count is in markup. Polling the chamber and every recorded vote this session. Only the first open is slow. It’s instant for you after this. Calling the roll · Tallying · Engrossing

Votes

Subjects

transportation
Cross-referencing the record. Reading this bill against every other bill in the corpus by meaning, not keywords. Only the first open is slow. It’s instant for you after this. Matching · Ranking · Engrossing

Frequently asked questions

What does SB 273 do?
An Act to create 347.40 (4) of the statutes;
Who sponsors SB 273?
SB 273 is sponsored by Spiros, Franklin, Callahan, Gundrum, Gustafson, Knodl, Kreibich, Miresse, Moses, Murphy, Mursau, O'Connor, Penterman, Steffen, Wichgers, Wimberger, Eric (Republican), James, Jesse (Republican), Jacque, André (Republican), and Nass, Steve (Republican).
What is the current status of SB 273?
This bill has been introduced in the Senate. Introduced May 21, 2025. It must pass committee before a floor vote.
Where can I track SB 273?
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Last checked for changes 3 months ago · updated continuously

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