---
type: "Bill"
title: "Relating to: camera monitor systems as an alternative to mirrors for commercial motor vehicles."
description: "Relating to: camera monitor systems as an alternative to mirrors for commercial motor vehicles."
jurisdiction: "us/states/wi"
legislature: "Wisconsin Legislature"
session: "2025"
identifier: "AB 271"
citation: "Wisconsin AB 271 (2025)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Callahan", "Franklin", "Gundrum", "Gustafson", "Knodl", "Kreibich", "Miresse", "Moses", "Murphy", "Mursau", "O'Connor", "Penterman", "Spiros", "Steffen", "Wichgers"]
version_count: 3
action_count: 35
vote_count: 3
first_action: "2025-05-19T05:00:00+00:00"
last_action: "2025-12-10T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/7f15b73b-7d9d-4b00-aa50-6fb5980694cb"
source_url: "https://docs.legis.wisconsin.gov/2025/proposals/reg/asm/bill/ab271"
source_hash: "b49c3e629df541945403824226a4f41d8455662a022a4cfc8d723674dad32291"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-wi"]
---

# Wisconsin AB 271 (2025) — Relating to: camera monitor systems as an alternative to mirrors for commercial motor vehicles.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Assembly Amendment 1** (committee substitute) — [source](https://docs.legis.wisconsin.gov/document/amends/2025/REG/AB271-ASA1-AA1)
2. **Assembly Substitute Amendment 1** (committee substitute) — [source](https://docs.legis.wisconsin.gov/document/amends/2025/REG/AB271-ASA1)
3. **Bill Text** (committee substitute) — [source](https://docs.legis.wisconsin.gov/document/proposaltext/2025/REG/AB271)

## Votes

- Report passage as amended recommended by Committee on Transportation, Ayes 6, Noes 0 — **6–0** (pass) · lower
- Report Assembly Substitute Amendment 1 adoption recommended by Committee on Transportation, Ayes 6, Noes 0 — **6–0** (pass) · lower
- Public hearing requirement waived by committee on Senate Organization, pursuant to Senate Rule 18 (1m), Ayes 3, Noes 2 — **3–2** (pass) · upper

## Sponsors

- Callahan — primary (person)
- Franklin — primary (person)
- Gundrum — primary (person)
- Gustafson — primary (person)
- Knodl — primary (person)
- Kreibich — primary (person)
- Miresse — primary (person)
- Moses — primary (person)
- Murphy — primary (person)
- Mursau — primary (person)
- O'Connor — primary (person)
- Penterman — primary (person)
- Spiros — primary (person)
- Steffen — primary (person)
- Wichgers — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2025-05-19T05:00:00+00:00** 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 `introduction`
- **2025-05-19T05:00:00+00:00** Read first time and referred to Committee on Transportation `reading-1, referral-committee`
- **2025-06-25T05:00:00+00:00** Assembly Amendment 1 offered by Representative Spiros
- **2025-06-25T05:00:00+00:00** Public hearing held
- **2025-07-30T05:00:00+00:00** Assembly Substitute Amendment 1 offered by Representative Spiros
- **2025-09-16T05:00:00+00:00** Executive action taken
- **2025-09-19T05:00:00+00:00** Report Assembly Substitute Amendment 1 adoption recommended by Committee on Transportation, Ayes 6, Noes 0 `committee-passage-favorable`
- **2025-09-19T05:00:00+00:00** Report passage as amended recommended by Committee on Transportation, Ayes 6, Noes 0 `committee-passage-favorable`
- **2025-09-19T05:00:00+00:00** Referred to committee on Rules `referral-committee`
- **2025-09-22T05:00:00+00:00** Assembly Amendment 1 to Assembly Substitute Amendment 1 offered by Representative Spiros
- **2025-10-03T05:00:00+00:00** Withdrawn from Committee on Rules and referred to calendar of 10-7-2025
- **2025-10-07T05:00:00+00:00** Representative Stubbs added as a coauthor
- **2025-10-07T05:00:00+00:00** Read a second time `reading-2`
- **2025-10-07T05:00:00+00:00** Assembly Amendment 1 to Assembly Substitute Amendment 1 adopted `amendment-passage`
- **2025-10-07T05:00:00+00:00** Assembly Substitute Amendment 1 adopted `amendment-passage`
- **2025-10-07T05:00:00+00:00** Ordered to a third reading `reading-3`
- **2025-10-07T05:00:00+00:00** Rules suspended
- **2025-10-07T05:00:00+00:00** Read a third time and passed `passage, reading-3`
- **2025-10-07T05:00:00+00:00** Ordered immediately messaged
- **2025-10-07T05:00:00+00:00** Received from Assembly `receipt`
- **2025-10-08T05:00:00+00:00** Read first time and referred to committee on Senate Organization `referral-committee`
- **2025-10-08T05:00:00+00:00** Available for scheduling
- **2025-10-13T05:00:00+00:00** Public hearing requirement waived by committee on Senate Organization, pursuant to Senate Rule 18 (1m), Ayes 3, Noes 2
- **2025-10-13T05:00:00+00:00** Placed on calendar 10-14-2025 pursuant to Senate Rule 18(1)
- **2025-10-14T05:00:00+00:00** Senator Ratcliff added as a cosponsor
- **2025-10-14T05:00:00+00:00** Read a second time `reading-2`
- **2025-10-14T05:00:00+00:00** Ordered to a third reading `reading-3`
- **2025-10-14T05:00:00+00:00** Rules suspended to give bill its third reading
- **2025-10-14T05:00:00+00:00** Read a third time and concurred in `passage, reading-3`
- **2025-10-14T05:00:00+00:00** Ordered immediately messaged
- **2025-10-14T05:00:00+00:00** Received from Senate concurred in `receipt`
- **2025-10-16T05:00:00+00:00** Report correctly enrolled on 10-16-2025 `enrolled`
- **2025-12-04T06:00:00+00:00** Presented to the Governor on 12-4-2025 `executive-receipt`
- **2025-12-10T06:00:00+00:00** Report approved by the Governor on 12-9-2025. 2025 Wisconsin Act 51 `executive-signature`
- **2025-12-10T06:00:00+00:00** Published 12-10-2025 `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/7f15b73b-7d9d-4b00-aa50-6fb5980694cb`. Confidence: reported (aggregated from official Wisconsin legislature records).