republic-os/legislation/us/states/co/2025a/hb-25-1039.md

type, title, description, jurisdiction, legislature, session, identifier, citation, classification, subjects, status, primary_sponsors, version_count, action_count, vote_count, first_action, last_action, source, source_identifier, source_url, source_hash, vintage, source_snapshot, retrieved_at, confidence, tags

type	title	description	jurisdiction	legislature	session	identifier	citation	classification	subjects	status	primary_sponsors	version_count	action_count	vote_count	first_action	last_action	source	source_identifier	source_url	source_hash	vintage	source_snapshot	retrieved_at	confidence	tags
Bill	Commercial Vehicle Muffler Requirements	The act requires all commercial vehicles to have a muffler. The muffler must be located so that it may be visually inspected to ensure it is present, intact, and functioning properly; except that a muffler need not be visible for inspection if certain documentation is present in the commercial vehicle and available for inspection by a peace officer. Standards are set for the necessary documentation.	us/states/co	Colorado General Assembly	2025A	HB 25-1039	Colorado HB 25-1039 (2025A)	bill		enacted	Brianna Titone Dylan Roberts Lesley Smith Marc Catlin	9	14	2	2025-01-08T07:00:00+00:00	2025-05-15T06:00:00+00:00	openstates	ocd-bill/602387cf-38c2-459e-ade6-ea97888fa4ec	https://leg.colorado.gov/bills/hb25-1039	356632e9a0170bf6453ecee3718a9062cf48873fbc8d446e4f289ccd5b20e71c	2026-07-01	https://data.openstates.org/daily/2026-07-01/public.pgdump	2026-07-06	reported	legislation bill us-co

Colorado HB 25-1039 (2025A) — Commercial Vehicle Muffler Requirements

The act requires all commercial vehicles to have a muffler. The muffler must be located so that it may be visually inspected to ensure it is present, intact, and functioning properly; except that a muffler need not be visible for inspection if certain documentation is present in the commercial vehicle and available for inspection by a peace officer. Standards are set for the necessary documentation.

Version chain

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

1. Committee Amendment (committee substitute) — source
2. Engrossed (04/17/2025) (committee substitute) — source
3. Final Act (05/13/2025) (committee substitute) — source
4. Introduced (01/08/2025) (committee substitute) — source
5. PA1 (01/29/2025) (committee substitute) — source
6. Reengrossed (04/21/2025) (committee substitute) — source
7. Rerevised (05/01/2025) (committee substitute) — source
8. Revised (04/30/2025) (committee substitute) — source
9. Signed Act (05/15/2025) (committee substitute) — source

Votes

• BILL — 30–5 (pass) · upper
• BILL — 41–22 (pass) · lower

Sponsors

• Brianna Titone — primary (person)
• Dylan Roberts — primary (person)
• Lesley Smith — primary (person)
• Marc Catlin — primary (person)
• A. Valdez — cosponsor (person)
• J. McCluskie — cosponsor (person)
• K. McCormick — cosponsor (person)
• M. Lukens — cosponsor (person)

Timeline

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

• 2025-05-15T06:00:00+00:00 Governor Signed executive-signature
• 2025-05-13T06:00:00+00:00 Sent to the Governor executive-receipt
• 2025-05-13T06:00:00+00:00 Signed by the President of the Senate
• 2025-05-13T06:00:00+00:00 Signed by the Speaker of the House
• 2025-05-01T06:00:00+00:00 Senate Third Reading Passed - No Amendments passage, reading-3
• 2025-04-30T06:00:00+00:00 Senate Second Reading Special Order - Passed - No Amendments
• 2025-04-30T06:00:00+00:00 Senate Committee on Appropriations Refer Unamended - Consent Calendar to Senate Committee of the Whole committee-passage
• 2025-04-28T06:00:00+00:00 Senate Committee on Transportation & Energy Refer Unamended to Appropriations referral-committee
• 2025-04-22T06:00:00+00:00 Introduced In Senate - Assigned to Transportation & Energy introduction
• 2025-04-21T06:00:00+00:00 House Third Reading Passed - No Amendments passage, reading-3
• 2025-04-17T06:00:00+00:00 House Second Reading Special Order - Passed with Amendments - Committee, Floor
• 2025-04-15T06:00:00+00:00 House Committee on Appropriations Refer Unamended to House Committee of the Whole committee-passage, referral-committee
• 2025-01-28T07:00:00+00:00 House Committee on Transportation, Housing & Local Government Refer Amended to Appropriations referral-committee
• 2025-01-08T07:00:00+00:00 Introduced In House - Assigned to Transportation, Housing & Local Government introduction

Source

OpenStates / OpenCivicData bulk snapshot 2026-07-01; origin ocd-bill/602387cf-38c2-459e-ade6-ea97888fa4ec. Confidence: reported (aggregated from official Colorado legislature records).