---
type: "Bill"
title: "Communications; emergency 9-1-1; emergency 9-1-1 service enabling act; modify. Amends secs. 102, 201, 312, 401a, 401b, 401c, 401d, 403, 406, 407 & 408 of 1986 PA 32 (MCL 484.1102 et seq.)."
description: "Communications; emergency 9-1-1; emergency 9-1-1 service enabling act; modify. Amends secs. 102, 201, 312, 401a, 401b, 401c, 401d, 403, 406, 407 & 408 of 1986 PA 32 (MCL 484.1102 et seq.)."
jurisdiction: "us/states/mi"
legislature: "Michigan Legislature"
session: "2017-2018"
identifier: "SB 400"
citation: "Michigan SB 400 (2017-2018)"
classification: ["bill"]
subjects: ["Communications: emergency 9-1-1", "Communications: technology"]
status: "enacted"
primary_sponsors: []
version_count: 5
action_count: 37
vote_count: 4
first_action: "2017-05-23T04:00:00+00:00"
last_action: "2018-03-08T05:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/7c8bc5b4-0eca-4a13-82c6-e2083977db2f"
source_url: "http://legislature.mi.gov/doc.aspx?2017-SB-0400"
source_hash: "1ea076ba9f57273c502d0dce10f2bd0b8160b907b605edf5ccd14e9b950d4c60"
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 400 (2017-2018) — Communications; emergency 9-1-1; emergency 9-1-1 service enabling act; modify. Amends secs. 102, 201, 312, 401a, 401b, 401c, 401d, 403, 406, 407 & 408 of 1986 PA 32 (MCL 484.1102 et seq.).

## 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-0400.htm)
2. **As Passed by the Senate** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billengrossed/Senate/htm/2017-SEBS-0400.htm)
3. **Public Act** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/publicact/htm/2018-PA-0051.htm)
4. **Senate Concurred Bill** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billconcurred/Senate/htm/2017-SCB-0400.htm)
5. **Senate Introduced Bill** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billintroduced/Senate/htm/2017-SIB-0400.htm)

## Votes

- PASSED ROLL CALL # 486 YEAS 30 NAYS 6 EXCUSED 2 NOT VOTING 0 — **30–6** (pass) · upper
- ROLL CALL # 111 YEAS 35 NAYS 1 EXCUSED 2 NOT VOTING 0 — **35–1** (pass) · upper
- passed; given immediate effect Roll Call # 61 Yeas 99 Nays 10 — **99–10** (pass) · lower
- passed Roll Call # 72 Yeas 98 Nays 11 — **98–11** (pass) · lower

## Sponsors

- 24 — cosponsor (person)
- Rick Jones — cosponsor (person)

## Timeline

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

- **2017-05-23T04:00:00+00:00** INTRODUCED BY SENATOR RICK JONES `introduction`
- **2017-05-23T04:00:00+00:00** REFERRED TO COMMITTEE ON ENERGY AND TECHNOLOGY `referral-committee`
- **2017-11-28T05:00:00+00:00** REPORTED FAVORABLY WITH SUBSTITUTE S-2 `committee-passage`
- **2017-11-28T05:00:00+00:00** COMMITTEE RECOMMENDED IMMEDIATE EFFECT
- **2017-11-28T05:00:00+00:00** REFERRED TO COMMITTEE OF THE WHOLE WITH SUBSTITUTE S-2 `referral-committee`
- **2017-12-06T05:00:00+00:00** REPORTED BY COMMITTEE OF THE WHOLE FAVORABLY WITH SUBSTITUTE S-2 `committee-passage`
- **2017-12-06T05:00:00+00:00** SUBSTITUTE S-2 CONCURRED IN
- **2017-12-06T05:00:00+00:00** PLACED ON ORDER OF THIRD READING WITH SUBSTITUTE S-2
- **2017-12-06T05:00:00+00:00** RULES SUSPENDED
- **2017-12-06T05:00:00+00:00** PLACED ON IMMEDIATE PASSAGE
- **2017-12-06T05:00:00+00:00** PASSED ROLL CALL # 486 YEAS 30 NAYS 6 EXCUSED 2 NOT VOTING 0 `passage`
- **2017-12-06T05:00:00+00:00** received on 12/06/2017 `introduction`
- **2017-12-06T05:00:00+00:00** read a first time `reading-1`
- **2017-12-06T05:00:00+00:00** referred to Committee on Communications and Technology `referral-committee`
- **2018-01-30T05:00:00+00:00** reported with recommendation with substitute H-1 `committee-passage`
- **2018-01-30T05:00:00+00:00** referred to second reading
- **2018-02-14T05:00:00+00:00** read a second time `reading-2`
- **2018-02-14T05:00:00+00:00** substitute H-1 adopted
- **2018-02-14T05:00:00+00:00** placed on third reading
- **2018-02-14T05:00:00+00:00** placed on immediate passage
- **2018-02-14T05:00:00+00:00** read a third time `reading-3`
- **2018-02-14T05:00:00+00:00** passed; given immediate effect Roll Call # 61 Yeas 99 Nays 10 `passage`
- **2018-02-14T05:00:00+00:00** inserted full title
- **2018-02-14T05:00:00+00:00** vote reconsidered
- **2018-02-14T05:00:00+00:00** amended
- **2018-02-14T05:00:00+00:00** passed Roll Call # 72 Yeas 98 Nays 11 `passage`
- **2018-02-14T05:00:00+00:00** returned to Senate
- **2018-02-20T05:00:00+00:00** LAID OVER ONE DAY UNDER THE RULES
- **2018-02-27T05:00:00+00:00** HOUSE SUBSTITUTE H-1 CONCURRED IN
- **2018-02-27T05:00:00+00:00** ROLL CALL # 111 YEAS 35 NAYS 1 EXCUSED 2 NOT VOTING 0
- **2018-02-27T05:00:00+00:00** GIVEN IMMEDIATE EFFECT
- **2018-02-27T05:00:00+00:00** FULL TITLE AGREED TO
- **2018-02-27T05:00:00+00:00** ORDERED ENROLLED
- **2018-03-06T05:00:00+00:00** PRESENTED TO GOVERNOR 3/1/2018 @ 12:58 PM `executive-receipt`
- **2018-03-08T05:00:00+00:00** APPROVED BY GOVERNOR 3/6/2018 @ 3:16 PM `executive-signature`
- **2018-03-08T05:00:00+00:00** FILED WITH SECRETARY OF STATE 3/6/2018 @ 3:46 PM
- **2018-03-08T05:00:00+00:00** ASSIGNED PA 0051'18 WITH IMMEDIATE EFFECT

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/7c8bc5b4-0eca-4a13-82c6-e2083977db2f`. Confidence: reported (aggregated from official Michigan legislature records).