---
type: "Bill"
title: "Traffic control; parking; provision related to license suspension for failure to comply with outstanding parking violation citations; modify. Amends sec. 321a of 1949 PA 300 (MCL 257.321a)."
description: "Traffic control; parking; provision related to license suspension for failure to comply with outstanding parking violation citations; modify. Amends sec. 321a of 1949 PA 300 (MCL 257.321a)."
jurisdiction: "us/states/mi"
legislature: "Michigan Legislature"
session: "2017-2018"
identifier: "SB 478"
citation: "Michigan SB 478 (2017-2018)"
classification: ["bill"]
subjects: ["Traffic control: parking", "Traffic control: violations", "Traffic control: driver license"]
status: "enacted"
primary_sponsors: []
version_count: 5
action_count: 31
vote_count: 3
first_action: "2017-06-21T04:00:00+00:00"
last_action: "2017-12-28T05:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/ab7d0ca3-073c-4183-9ba5-d57d04a1ac18"
source_url: "http://legislature.mi.gov/doc.aspx?2017-SB-0478"
source_hash: "910fe34c3a1cee5fbd8899f2a29746c8ef35efb123c743c2e1e736a85c3fa22f"
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 478 (2017-2018) — Traffic control; parking; provision related to license suspension for failure to comply with outstanding parking violation citations; modify. Amends sec. 321a of 1949 PA 300 (MCL 257.321a).

## 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-0478.htm)
2. **As Passed by the Senate** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billengrossed/Senate/htm/2017-SEBS-0478.htm)
3. **Public Act** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/publicact/htm/2017-PA-0236.htm)
4. **Senate Concurred Bill** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billconcurred/Senate/htm/2017-SCB-0478.htm)
5. **Senate Introduced Bill** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billintroduced/Senate/htm/2017-SIB-0478.htm)

## Votes

- passed; given immediate effect Roll Call # 495 Yeas 74 Nays 36 — **74–36** (pass) · lower
- ROLL CALL # 569 YEAS 29 NAYS 8 EXCUSED 1 NOT VOTING 0 — **29–8** (pass) · upper
- PASSED ROLL CALL # 465 YEAS 26 NAYS 12 EXCUSED 0 NOT VOTING 0 — **26–12** (pass) · upper

## Sponsors

- 29 — cosponsor (person)
- Dave Hildenbrand — cosponsor (person)

## Timeline

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

- **2017-06-21T04:00:00+00:00** INTRODUCED BY SENATOR DAVID HILDENBRAND `introduction`
- **2017-06-21T04:00:00+00:00** REFERRED TO COMMITTEE ON TRANSPORTATION `referral-committee`
- **2017-10-24T04:00:00+00:00** REPORTED FAVORABLY WITHOUT AMENDMENT `committee-passage`
- **2017-10-24T04:00:00+00:00** COMMITTEE RECOMMENDED IMMEDIATE EFFECT
- **2017-10-24T04:00:00+00:00** REFERRED TO COMMITTEE OF THE WHOLE `referral-committee`
- **2017-11-28T05:00:00+00:00** REPORTED BY COMMITTEE OF THE WHOLE FAVORABLY WITHOUT AMENDMENT(S) `committee-passage`
- **2017-11-28T05:00:00+00:00** PLACED ON ORDER OF THIRD READING
- **2017-11-29T05:00:00+00:00** PASSED ROLL CALL # 465 YEAS 26 NAYS 12 EXCUSED 0 NOT VOTING 0 `passage`
- **2017-11-29T05:00:00+00:00** received on 11/29/2017 `introduction`
- **2017-11-29T05:00:00+00:00** read a first time `reading-1`
- **2017-11-29T05:00:00+00:00** referred to Committee on Transportation and Infrastructure `referral-committee`
- **2017-12-12T05:00:00+00:00** reported with recommendation with substitute H-1 `committee-passage`
- **2017-12-12T05:00:00+00:00** referred to second reading
- **2017-12-13T05:00:00+00:00** read a second time `reading-2`
- **2017-12-13T05:00:00+00:00** substitute H-1 not adopted
- **2017-12-13T05:00:00+00:00** substitute H-2 adopted
- **2017-12-13T05:00:00+00:00** placed on third reading
- **2017-12-13T05:00:00+00:00** placed on immediate passage
- **2017-12-13T05:00:00+00:00** read a third time `reading-3`
- **2017-12-13T05:00:00+00:00** passed; given immediate effect Roll Call # 495 Yeas 74 Nays 36 `passage`
- **2017-12-13T05:00:00+00:00** inserted full title
- **2017-12-13T05:00:00+00:00** returned to Senate
- **2017-12-13T05:00:00+00:00** HOUSE SUBSTITUTE H-2 CONCURRED IN
- **2017-12-13T05:00:00+00:00** ROLL CALL # 569 YEAS 29 NAYS 8 EXCUSED 1 NOT VOTING 0
- **2017-12-13T05:00:00+00:00** GIVEN IMMEDIATE EFFECT
- **2017-12-13T05:00:00+00:00** FULL TITLE AGREED TO
- **2017-12-13T05:00:00+00:00** ORDERED ENROLLED
- **2017-12-28T05:00:00+00:00** PRESENTED TO GOVERNOR 12/19/2017 @ 3:36 PM `executive-receipt`
- **2017-12-28T05:00:00+00:00** APPROVED BY GOVERNOR 12/20/2017 @ 12:54 PM `executive-signature`
- **2017-12-28T05:00:00+00:00** FILED WITH SECRETARY OF STATE 12/21/2017 @ 1:58 PM
- **2017-12-28T05:00:00+00:00** ASSIGNED PA 0236'17 WITH IMMEDIATE EFFECT

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/ab7d0ca3-073c-4183-9ba5-d57d04a1ac18`. Confidence: reported (aggregated from official Michigan legislature records).