---
type: "Bill"
title: "relative to certain ignition interlock violations."
description: "relative to certain ignition interlock violations."
jurisdiction: "us/states/nh"
legislature: "New Hampshire General Court"
session: "2017"
identifier: "HB 448"
citation: "New Hampshire HB 448 (2017)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: []
version_count: 1
action_count: 21
vote_count: 0
first_action: "2017-01-12"
last_action: "2017-07-20"
source: "openstates"
source_identifier: "ocd-bill/039a088c-5ea1-45de-9968-ceb001078234"
source_url: "http://www.gencourt.state.nh.us/bill_Status/bill_status.aspx?lsr=0428&sy=2017&sortoption=&txtsessionyear=2017"
source_hash: "ed6012a0e5acc23fb17a9a02bd21911e5c3d12049ce403b9cc6add9a194d997d"
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-nh"]
---

# New Hampshire HB 448 (2017) — relative to certain ignition interlock violations.

## Version chain

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

1. **Amendment #2017-1404s** (committee substitute) — [source](http://www.gencourt.state.nh.us/bill_status/billText.aspx?sy=2017&id=2017-1404s&txtFormat=amend)

## Timeline

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

- **2017-01-12** Introduced 01/05/2017 and referred to Criminal Justice and Public Safety HJ 3 P. 13 `introduction, referral-committee`
- **2017-01-18** Public Hearing: 01/24/2017 01:30 PM LOB 204
- **2017-02-01** Executive Session: 02/08/2017 10:00 AM LOB 204
- **2017-02-21** Committee Report: Ought to Pass for 03/08/2017 (Vote 18-2; CC) HC 14 P. 9 `committee-passage-favorable`
- **2017-03-08** Ought to Pass: MA VV 03/08/2017 HJ 9 P. 16 `passage`
- **2017-03-14** Introduced 03/09/2017 and Referred to Judiciary; SJ 9 `introduction, referral-committee`
- **2017-03-29** Hearing: 04/04/2017, Room 100, SH, 10:00 am; SC 17
- **2017-04-13** Committee Report: Ought to Pass with Amendment # 2017-1404s, 04/20/2017; Vote 5-0; CC; SC 19 `committee-passage-favorable`
- **2017-04-20** Committee Amendment # 2017-1404s, AA, VV; 04/20/2017; SJ 14
- **2017-04-20** Ought to Pass with Amendment 2017-1404s, MA, VV; OT3rdg; 04/20/2017; SJ 14 `passage`
- **2017-05-18** House Non-Concurs with Senate Amendment 1404s and Requests CofC (Rep. Welch): MA VV 05/18/2017 HJ 16 P. 7
- **2017-05-18** Speaker Appoints: Reps. Sapareto, Welch, Fields, O'Leary 05/18/2017 HJ 16 P. 7
- **2017-06-01** Sen. Carson Accedes to House Request for Committee of Conference, MA, VV; 05/31/2017; SJ 18
- **2017-06-01** President Appoints: Senators Carson, French, Lasky; 05/31/2017; SJ 18
- **2017-06-06** Conference Committee Meeting: 06/08/2017 01:10 PM LOB 204
- **2017-06-15** Conference Committee Report Filed, # 2017-2190c; 06/15/2017
- **2017-06-22** Conference Committee Report # 2017-2190c, Adopted, VV; 06/22/2017; SJ 20
- **2017-06-22** Conference Committee Report 2190c: Adopted, VV 06/22/2017 HJ 19 P. 22
- **2017-07-03** Enrolled (In recess 06/22/2017); SJ 20
- **2017-07-05** Enrolled 06/22/2017 HJ 19 P. 27
- **2017-07-20** Signed by Governor Sununu 07/18/2017; Chapter 244; Eff. 7/18/2017 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/039a088c-5ea1-45de-9968-ceb001078234`. Confidence: reported (aggregated from official New Hampshire legislature records).