---
type: "Bill"
title: "Transportation - Ignition Interlock System - Definition"
description: "Transportation - Ignition Interlock System - Definition"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2019"
identifier: "HB 55"
citation: "Maryland HB 55 (2019)"
classification: ["bill"]
subjects: ["Vehicle Laws - Drunk Driving", "Drunk and Drugged Driving", "Motor Vehicles", "Motor Vehicle Equipment", "Motor Vehicle Operation", "Photography", "Recordings", "Transportation", "Video"]
status: "enacted"
primary_sponsors: ["Barron and Sydnor"]
version_count: 1
action_count: 13
vote_count: 2
first_action: "2019-01-14"
last_action: "2019-04-18"
source: "openstates"
source_identifier: "ocd-bill/cc307655-65ae-4641-8785-086cb43f5f0b"
source_url: "http://mgaleg.maryland.gov/webmga/frmMain.aspx?id=HB55&stab=01&pid=billpage&tab=subject3&ys=2019rs"
source_hash: "aae720ba2e86530e51fbbcbfb306a60f1915f8d8aa72ba4a2124533bd1373b2d"
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-md"]
---

# Maryland HB 55 (2019) — Transportation - Ignition Interlock System - Definition

## Version chain

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

1. **Bill Text** (committee substitute) — [source](http://mgaleg.maryland.gov/2019RS/bills/hb/hb0055f.pdf)

## Votes

- On Third Reading — **43–2** (pass) · upper
- On Third Reading — **138–0** (pass) · lower

## Sponsors

- Barron and Sydnor — primary (person)

## Timeline

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

- **2019-01-14** First Reading Judiciary `referral-committee`
- **2019-01-15** Hearing 1/24 at 1:00 p.m.
- **2019-02-25** Favorable with Amendments Report by Judiciary `committee-passage-favorable`
- **2019-02-27** Favorable with Amendments {422711/1 Report Adopted `committee-passage-favorable`
- **2019-02-27** Second Reading Passed with Amendments
- **2019-03-01** Third Reading Passed (138-0) `passage`
- **2019-03-04** First Reading Judicial Proceedings `referral-committee`
- **2019-04-01** Favorable Report by Judicial Proceedings `committee-passage-favorable`
- **2019-04-01** Favorable Report Adopted `committee-passage-favorable`
- **2019-04-01** Second Reading Passed
- **2019-04-02** Third Reading Passed (43-2) `passage`
- **2019-04-03** Returned Passed
- **2019-04-18** Approved by the Governor - Chapter 65 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/cc307655-65ae-4641-8785-086cb43f5f0b`. Confidence: reported (aggregated from official Maryland legislature records).