---
type: "Bill"
title: "relative to ignition interlock requirements in manslaughter cases involving alcohol."
description: "relative to ignition interlock requirements in manslaughter cases involving alcohol."
jurisdiction: "us/states/nh"
legislature: "New Hampshire General Court"
session: "2017"
identifier: "HB 420"
citation: "New Hampshire HB 420 (2017)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: []
version_count: 1
action_count: 25
vote_count: 0
first_action: "2017-01-11"
last_action: "2017-07-20"
source: "openstates"
source_identifier: "ocd-bill/d6e99337-4a5b-4aaf-9102-d5ceab7734aa"
source_url: "http://www.gencourt.state.nh.us/bill_Status/bill_status.aspx?lsr=0429&sy=2017&sortoption=&txtsessionyear=2017"
source_hash: "771b1c7f38dfbee863fe0bc361c68a451cb6997ba830c7c434495f9902051148"
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 420 (2017) — relative to ignition interlock requirements in manslaughter cases involving alcohol.

## Version chain

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

1. **Amendment #2017-2381e** (committee substitute) — [source](http://www.gencourt.state.nh.us/bill_status/billText.aspx?sy=2017&id=2017-2381e&txtFormat=amend)

## Timeline

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

- **2017-01-11** Introduced 01/05/2017 and referred to Criminal Justice and Public Safety HJ 3 P. 11 `introduction, referral-committee`
- **2017-01-18** Public Hearing: 01/24/2017 01:00 PM LOB 204
- **2017-02-01** Executive Session: 01/25/2017 LOB 204
- **2017-02-01** Majority Committee Report: Ought to Pass for 02/09/2017 (Vote 16-4; RC) HC 10 P. 9 `committee-passage-favorable`
- **2017-02-01** Minority Committee Report: Inexpedient to Legislate
- **2017-02-09** Ought to Pass: MA VV 02/09/2017 HJ 6 P. 17 `passage`
- **2017-02-22** Introduced 02/16/2017 and Referred to Judiciary; SJ 7 `introduction, referral-committee`
- **2017-03-07** ==CANCELLED== Hearing: 03/14/2017, Room 100, SH, 09:50 am; SC 14
- **2017-03-15** Hearing: 03/21/2017, Room 100, SH, 09:30 am; SC 15
- **2017-04-13** Committee Report: Ought to Pass with Amendment # 2017-1405s, 04/20/2017; Vote 5-0; CC; SC 19 `committee-passage-favorable`
- **2017-04-20** Committee Amendment # 2017-1405s, AA, VV; 04/20/2017; SJ 14
- **2017-04-20** Ought to Pass with Amendment 2017-1405s, MA, VV; OT3rdg; 04/20/2017; SJ 14 `passage`
- **2017-05-18** House Non-Concurs with Senate Amendment 1405s 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 01:00 PM LOB 204
- **2017-06-15** Conference Committee Report Filed, # 2017-2191c; 06/15/2017
- **2017-06-22** Conference Committee Report # 2017-2191c, Adopted, VV; 06/22/2017; SJ 20
- **2017-06-22** Conference Committee Report 2191c: Adopted, VV 06/22/2017 HJ 19 P. 21
- **2017-06-29** Enrolled Bill Amendment # 2017-2381e Adopted, VV, (In recess of 06/22/2017); SJ 20
- **2017-06-29** Enrolled Bill Amendment # 2017-2381e: AA VV 06/22/2017 HJ 19 P. 26
- **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 243; 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/d6e99337-4a5b-4aaf-9102-d5ceab7734aa`. Confidence: reported (aggregated from official New Hampshire legislature records).