---
type: "Bill"
title: "Prohibit Nuisance Exhibition Motor Vehicle Exhaust"
description: "The bill prohibits engaging in a nuisance exhibition of motor vehicle exhaust, which is the act of knowingly blowing black smoke through one or more exhaust pipes attached to a motor vehicle with a gross vehicle weight rating of 14,000 pounds or less in a manner that obstructs or obscures the view of another driver, a bicyclist, or a pedestrian. A person who violates the prohibition commits a class A traffic infraction, punishable by a fine of $100."
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2017A"
identifier: "SB 17-278"
citation: "Colorado SB 17-278 (2017A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Don Coram", "Joann Ginal"]
version_count: 8
action_count: 13
vote_count: 2
first_action: "2017-03-31T06:00:00+00:00"
last_action: "2017-06-05T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/83626c52-0d2f-4677-9d10-3e470d31e427"
source_url: "http://leg.colorado.gov/bills/sb17-278"
source_hash: "1533599c7fbcd2459fccd4058fa85387faa48e88f8800b3de850b385d1649749"
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-co"]
---

# Colorado SB 17-278 (2017A) — Prohibit Nuisance Exhibition Motor Vehicle Exhaust

The bill prohibits engaging in a nuisance exhibition of motor vehicle exhaust, which is the act of knowingly blowing black smoke through one or more exhaust pipes attached to a motor vehicle with a gross vehicle weight rating of 14,000 pounds or less in a manner that obstructs or obscures the view of another driver, a bicyclist, or a pedestrian. A person who violates the prohibition commits a class A traffic infraction, punishable by a fine of $100.

## Version chain

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

1. **Committee Amendment** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2017a/bills/cr/2017A_SB278_H_HIE_001.pdf)
2. **Engrossed (04/18/2017)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2017A/bills/2017a_278_eng.pdf)
3. **Final Act (05/15/2017)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2017A/bills/2017a_278_enr.pdf)
4. **Introduced (03/31/2017)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2017A/bills/2017a_278_01.pdf)
5. **Reengrossed (04/19/2017)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2017A/bills/2017a_278_ren.pdf)
6. **Rerevised (05/02/2017)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2017A/bills/2017a_278_rer.pdf)
7. **Revised (05/01/2017)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2017A/bills/2017a_278_rev.pdf)
8. **Signed Act (06/05/2017)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2017A/bills/2017a_278_signed.pdf)

## Votes

- Refer Senate Bill 17-278 to the Committee of the Whole. The motion passed on a vote of 9-2. — **9–2** (pass) · legislature
- Refer Senate Bill 17-278 to the Committee of the Whole. The motion passed on a vote of 3-2. The motion passed on a vote of 3-2. — **3–2** (pass) · legislature

## Sponsors

- Don Coram — primary (person)
- Joann Ginal — primary (person)

## Timeline

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

- **2017-06-05T06:00:00+00:00** Governor Signed `executive-signature`
- **2017-05-15T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2017-05-15T06:00:00+00:00** Signed by the Speaker of the House
- **2017-05-15T06:00:00+00:00** Signed by the President of the Senate
- **2017-05-02T06:00:00+00:00** House Third Reading Passed - No Amendments `reading-3, passage`
- **2017-05-01T06:00:00+00:00** House Second Reading Passed - No Amendments `reading-2`
- **2017-04-27T06:00:00+00:00** House Committee on Health, Insurance, & Environment Refer Unamended to House Committee of the Whole `referral-committee, committee-passage`
- **2017-04-19T06:00:00+00:00** Introduced In House - Assigned to Health, Insurance, & Environment `introduction`
- **2017-04-19T06:00:00+00:00** Senate Third Reading Passed - No Amendments `reading-3, passage`
- **2017-04-18T06:00:00+00:00** Senate Second Reading Passed - No Amendments `reading-2`
- **2017-04-17T06:00:00+00:00** Senate Second Reading Laid Over Daily - No Amendments
- **2017-04-11T06:00:00+00:00** Senate Committee on Transportation Refer Unamended to Senate Committee of the Whole `referral-committee, committee-passage`
- **2017-03-31T06:00:00+00:00** Introduced In Senate - Assigned to Transportation `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/83626c52-0d2f-4677-9d10-3e470d31e427`. Confidence: reported (aggregated from official Colorado legislature records).