---
type: "Bill"
title: "Traffic control; traffic regulation; gross vehicle weight limits; provide exemption for certain natural gas vehicles. Amends sec. 722 of 1949 PA 300 (MCL 257.722)."
description: "Traffic control; traffic regulation; gross vehicle weight limits; provide exemption for certain natural gas vehicles. Amends sec. 722 of 1949 PA 300 (MCL 257.722)."
jurisdiction: "us/states/mi"
legislature: "Michigan Legislature"
session: "2017-2018"
identifier: "SB 159"
citation: "Michigan SB 159 (2017-2018)"
classification: ["bill"]
subjects: ["Traffic control: traffic regulation", "Transportation: carriers", "Energy: gas and oil", "State agencies (existing): transportation"]
status: "enacted"
primary_sponsors: []
version_count: 4
action_count: 27
vote_count: 2
first_action: "2017-02-15T05:00:00+00:00"
last_action: "2017-07-12T04:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/d7333a13-9614-448b-9a96-037a7bd2a6be"
source_url: "http://legislature.mi.gov/doc.aspx?2017-SB-0159"
source_hash: "74799b2a619b26d4efb0a669da7e1e7dbb417f568bed964cd0dc16ed58bb2d70"
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 159 (2017-2018) — Traffic control; traffic regulation; gross vehicle weight limits; provide exemption for certain natural gas vehicles. 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](http://www.legislature.mi.gov/documents/2017-2018/billengrossed/Senate/htm/2017-SEBH-0159.htm)
2. **As Passed by the Senate** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billengrossed/Senate/htm/2017-SEBS-0159.htm)
3. **Public Act** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/publicact/htm/2017-PA-0080.htm)
4. **Senate Introduced Bill** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billintroduced/Senate/htm/2017-SIB-0159.htm)

## Votes

- PASSED ROLL CALL # 85 YEAS 37 NAYS 0 EXCUSED 1 NOT VOTING 0 — **37–0** (pass) · upper
- passed; given immediate effect Roll Call # 199 Yeas 96 Nays 11 — **96–11** (pass) · lower

## Sponsors

- 38 — cosponsor (person)
- Tom Casperson — cosponsor (person)

## Timeline

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

- **2017-02-15T05:00:00+00:00** INTRODUCED BY SENATOR THOMAS CASPERSON `introduction`
- **2017-02-15T05:00:00+00:00** REFERRED TO COMMITTEE ON TRANSPORTATION `referral-committee`
- **2017-03-21T04:00:00+00:00** REPORTED FAVORABLY WITH SUBSTITUTE S-1 `committee-passage`
- **2017-03-21T04:00:00+00:00** COMMITTEE RECOMMENDED IMMEDIATE EFFECT
- **2017-03-21T04:00:00+00:00** REFERRED TO COMMITTEE OF THE WHOLE WITH SUBSTITUTE S-1 `referral-committee`
- **2017-03-23T04:00:00+00:00** REPORTED BY COMMITTEE OF THE WHOLE FAVORABLY WITH SUBSTITUTE S-1 `committee-passage`
- **2017-03-23T04:00:00+00:00** SUBSTITUTE S-1 CONCURRED IN
- **2017-03-23T04:00:00+00:00** PLACED ON ORDER OF THIRD READING WITH SUBSTITUTE S-1
- **2017-03-28T04:00:00+00:00** PASSED ROLL CALL # 85 YEAS 37 NAYS 0 EXCUSED 1 NOT VOTING 0 `passage`
- **2017-03-28T04:00:00+00:00** received on 03/28/2017 `introduction`
- **2017-03-28T04:00:00+00:00** read a first time `reading-1`
- **2017-03-28T04:00:00+00:00** referred to Committee on Transportation and Infrastructure `referral-committee`
- **2017-05-30T04:00:00+00:00** reported with recommendation without amendment `committee-passage`
- **2017-05-30T04:00:00+00:00** referred to second reading
- **2017-06-08T04:00:00+00:00** read a second time `reading-2`
- **2017-06-08T04:00:00+00:00** placed on third reading
- **2017-06-13T04:00:00+00:00** read a third time `reading-3`
- **2017-06-13T04:00:00+00:00** passed; given immediate effect Roll Call # 199 Yeas 96 Nays 11 `passage`
- **2017-06-13T04:00:00+00:00** inserted full title
- **2017-06-13T04:00:00+00:00** returned to Senate
- **2017-06-14T04:00:00+00:00** GIVEN IMMEDIATE EFFECT
- **2017-06-14T04:00:00+00:00** FULL TITLE AGREED TO
- **2017-06-14T04:00:00+00:00** ORDERED ENROLLED
- **2017-07-12T04:00:00+00:00** PRESENTED TO GOVERNOR 6/28/2017 @ 12:22 PM `executive-receipt`
- **2017-07-12T04:00:00+00:00** APPROVED BY GOVERNOR 7/11/2017 @ 12:09 PM `executive-signature`
- **2017-07-12T04:00:00+00:00** FILED WITH SECRETARY OF STATE 7/11/2017 @ 1:24 PM
- **2017-07-12T04:00:00+00:00** ASSIGNED PA 0080'17 WITH IMMEDIATE EFFECT

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/d7333a13-9614-448b-9a96-037a7bd2a6be`. Confidence: reported (aggregated from official Michigan legislature records).