---
type: "Bill"
title: "Traffic control: traffic regulation; weight restrictions on electric trucks; modify. Amends sec. 722 of 1949 PA 300 (MCL 257.722)."
description: "Traffic control: traffic regulation; weight restrictions on electric trucks; modify. Amends sec. 722 of 1949 PA 300 (MCL 257.722)."
jurisdiction: "us/states/mi"
legislature: "Michigan Legislature"
session: "2023-2024"
identifier: "SB 501"
citation: "Michigan SB 501 (2023-2024)"
classification: ["bill"]
subjects: ["State agencies (existing): transportation", "Traffic control: traffic regulation", "Vehicles: trucks"]
status: "enacted"
primary_sponsors: ["Darrin Camilleri"]
version_count: 8
action_count: 25
vote_count: 2
first_action: "2023-09-14"
last_action: "2024-07-30"
source: "openstates"
source_identifier: "ocd-bill/d0d676a4-9473-41c1-9dfb-fa47bb1ca7b3"
source_url: "https://legislature.mi.gov/Bills/Bill?ObjectName=2023-SB-0501"
source_hash: "2e94eb17751d4e8fd00096a0b9e99004f4e70da6cbb38454e8e44ddbf6964a77"
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-mi"]
---

# Michigan SB 501 (2023-2024) — Traffic control: traffic regulation; weight restrictions on electric trucks; modify. Amends sec. 722 of 1949 PA 300 (MCL 257.722).

## Version chain

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

1. **As Passed by the House** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billengrossed/Senate/pdf/2023-SEBH-0501.pdf)
2. **As Passed by the Senate** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billengrossed/Senate/pdf/2023-SEBS-0501.pdf)
3. **Public Act** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/publicact/pdf/2024-PA-0106.pdf)
4. **Senate Introduced Bill** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billintroduced/Senate/pdf/2023-SIB-0501.pdf)
5. **Substitute (S-1)** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-SCVBS-0501-00B74.pdf)
6. **Substitute (S-1) - 2** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-SCVBS-0501-0B735.pdf)
7. **Substitute (S-1) - 3** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-SCVBS-0501-00C77.pdf)
8. **Substitute (S-1) - 4** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-SCVBS-0501-00D48.pdf)

## Votes

- passed; given immediate effect Roll Call # 202 Yeas 60 Nays 49 Excused 0 Not Voting 1 — **60–49** (pass) · lower
- PASSED ROLL CALL # 719 YEAS 23 NAYS 14 EXCUSED 1 NOT VOTING 0 — **23–14** (pass) · upper

## Sponsors

- Darrin Camilleri — primary (person)

## Timeline

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

- **2023-09-14** INTRODUCED BY SENATOR DARRIN CAMILLERI `introduction`
- **2023-09-14** REFERRED TO COMMITTEE ON TRANSPORTATION AND INFRASTRUCTURE `referral-committee`
- **2023-11-08** REPORTED FAVORABLY WITH SUBSTITUTE (S-1) `committee-passage`
- **2023-11-08** REFERRED TO COMMITTEE OF THE WHOLE WITH SUBSTITUTE (S-1) `referral-committee`
- **2023-11-08** REPORTED BY COMMITTEE OF THE WHOLE FAVORABLY WITH SUBSTITUTE (S-1) `committee-passage`
- **2023-11-08** SUBSTITUTE (S-1) CONCURRED IN
- **2023-11-08** PLACED ON ORDER OF THIRD READING WITH SUBSTITUTE (S-1)
- **2023-11-09** PASSED ROLL CALL # 719 YEAS 23 NAYS 14 EXCUSED 1 NOT VOTING 0 `passage`
- **2023-11-09** received on 11/09/2023 `introduction`
- **2023-11-09** read a first time `reading-1`
- **2023-11-09** referred to Committee on Transportation, Mobility and Infrastructure `referral-committee`
- **2024-06-11** reported with recommendation without amendment `committee-passage`
- **2024-06-11** referred to second reading
- **2024-06-18** read a second time `reading-2`
- **2024-06-18** placed on third reading
- **2024-06-20** read a third time `reading-3`
- **2024-06-20** passed; given immediate effect Roll Call # 202 Yeas 60 Nays 49 Excused 0 Not Voting 1 `passage`
- **2024-06-20** inserted full title
- **2024-06-20** returned to Senate
- **2024-06-26** FULL TITLE AGREED TO
- **2024-06-26** ORDERED ENROLLED
- **2024-07-30** PRESENTED TO GOVERNOR 07/11/2024 01:48 PM `executive-receipt`
- **2024-07-30** APPROVED BY GOVERNOR 07/23/2024 10:20 AM `executive-signature`
- **2024-07-30** FILED WITH SECRETARY OF STATE 07/23/2024 12:20 PM
- **2024-07-30** ASSIGNED PA 0106'24

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/d0d676a4-9473-41c1-9dfb-fa47bb1ca7b3`. Confidence: reported (aggregated from official Michigan legislature records).