---
type: "Bill"
title: "Clean Cars Act of 2017"
description: "Clean Cars Act of 2017"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2017"
identifier: "HB 406"
citation: "Maryland HB 406 (2017)"
classification: ["bill"]
subjects: ["Taxes - Transportation", "Vehicle Laws - Licensing and Registration", "Appropriations", "Energy Matters", "Excise Tax", "Industry and Technology", "Motor Vehicles", "Motor Vehicle Equipment", "Revenue and Taxes", "Tax Credits", "Transportation"]
status: "enacted"
primary_sponsors: ["The Speaker (By Request - Administration) and Fraser-Hidalgo"]
version_count: 1
action_count: 17
vote_count: 3
first_action: "2017-01-26"
last_action: "2017-05-04"
source: "openstates"
source_identifier: "ocd-bill/2d561602-4e6b-4c4c-a7d5-f102c9ffa84a"
source_url: "http://mgaleg.maryland.gov/webmga/frmMain.aspx?id=HB406&stab=01&pid=billpage&tab=subject3&ys=2017rs"
source_hash: "e135f58d6ae0bcdc0748e9b4d51c0032a1ff1d9e15e11d2ac3a61c398f74efc3"
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 406 (2017) — Clean Cars Act of 2017

## 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/2017RS/bills/hb/hb0406f.pdf)

## Votes

- Third Reading — **123–11** (pass) · legislature
- Third Reading — **129–11** (pass) · legislature
- Third Reading — **47–0** (pass) · legislature

## Sponsors

- The Speaker (By Request - Administration) and Fraser-Hidalgo — primary (person)
- Afzali — cosponsor (person)
- Anderton — cosponsor (person)
- Aumann — cosponsor (person)
- B. Wilson — cosponsor (person)
- Beidle — cosponsor (person)
- Beitzel — cosponsor (person)
- Carozza — cosponsor (person)
- Cassilly — cosponsor (person)
- Ciliberti — cosponsor (person)
- Clark — cosponsor (person)
- Cluster — cosponsor (person)
- Davis — cosponsor (person)
- Flanagan — cosponsor (person)
- Folden — cosponsor (person)
- Hornberger — cosponsor (person)
- Jacobs — cosponsor (person)
- Jalisi — cosponsor (person)
- Kipke — cosponsor (person)
- Kittleman — cosponsor (person)
- Krebs — cosponsor (person)
- Long — cosponsor (person)
- Malone — cosponsor (person)
- Mautz — cosponsor (person)
- McComas — cosponsor (person)
- McCray — cosponsor (person)
- McKay — cosponsor (person)
- McMillan — cosponsor (person)
- Metzgar — cosponsor (person)
- Miele — cosponsor (person)
- Otto — cosponsor (person)
- Reilly — cosponsor (person)
- S. Howard — cosponsor (person)
- Simonaire — cosponsor (person)
- Szeliga — cosponsor (person)
- Vogt — cosponsor (person)
- West — cosponsor (person)
- Wivell — cosponsor (person)

## Timeline

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

- **2017-01-26** First Reading Environment and Transportation `referral-committee`
- **2017-02-02** Hearing 2/23 at 1:00 p.m.
- **2017-03-18** Favorable with Amendments Report by Environment and Transportation `committee-passage-favorable`
- **2017-03-18** Favorable with Amendments {340912/1 Report Adopted `committee-passage-favorable`
- **2017-03-18** Second Reading Passed with Amendments
- **2017-03-20** Third Reading Passed (123-11) `passage`
- **2017-03-20** First Reading Finance and Budget and Taxation `referral-committee`
- **2017-03-21** Hearing 4/04 at 1:00 p.m. (Finance)
- **2017-04-10** Favorable with Amendments Report by Finance `committee-passage-favorable`
- **2017-04-10** Favorable with Amendments {107577/1 Report Adopted `committee-passage-favorable`
- **2017-04-10** Second Reading Passed with Amendments
- **2017-04-10** Motion two readings same day Const/Rule 24 (Senator Middleton) Adopted
- **2017-04-10** Third Reading Passed with Amendments (47-0) `passage`
- **2017-04-10** House Concur - Senate Amendments
- **2017-04-10** Third Reading Passed (129-11) `passage`
- **2017-04-10** Passed Enrolled
- **2017-05-04** Approved by the Governor - Chapter 362 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/2d561602-4e6b-4c4c-a7d5-f102c9ffa84a`. Confidence: reported (aggregated from official Maryland legislature records).