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HB 25-1039 CO
Became Law

Commercial Vehicle Muffler Requirements

CO · session 2025A · Assembly / House · bill

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Introduced Jan 8, 2025

Latest action (May 15, 2025) Introduced In House - Assigned to Transportation, Housing & Local Government

Summary

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. The act increases the fine for a violation from $500 to $1,000. The fine is not imposed if the owner or operator can show that a muffler was installed before the citation was issued and that the muffler complied with the manufacturing noise standards for the model year of the commercial vehicle. The fine is decreased by 50% if a muffler is installed within 30 days after the citation is written. The act applies to commercial vehicles with an internal combustion engine and does not apply to farm vehicles. State agencies must include language in construction contracts stating that a contractor's or subcontractor's commercial vehicle that enters a public project site is required to comply with the act. (Note: This summary applies to this bill as enacted.)

Sponsors (4)

4 coauthors / cosponsors

Action history (14)

  1. May 15, 2025 Governor Signed · executive
  2. May 13, 2025 Sent to the Governor · executive
  3. May 13, 2025 Signed by the President of the Senate · upper
  4. May 13, 2025 Signed by the Speaker of the House · lower
  5. May 1, 2025 Senate Third Reading Passed - No Amendments · upper
  6. Apr 30, 2025 Senate Second Reading Special Order - Passed - No Amendments · upper
  7. Apr 30, 2025 Senate Committee on Appropriations Refer Unamended - Consent Calendar to Senate Committee of the Whole · upper
  8. Apr 28, 2025 Senate Committee on Transportation & Energy Refer Unamended to Appropriations · upper
  9. Apr 22, 2025 Introduced In Senate - Assigned to Transportation & Energy · upper
  10. Apr 21, 2025 House Third Reading Passed - No Amendments · lower
  11. Apr 17, 2025 House Second Reading Special Order - Passed with Amendments - Committee, Floor · lower
  12. Apr 15, 2025 House Committee on Appropriations Refer Unamended to House Committee of the Whole · lower
  13. Jan 28, 2025 House Committee on Transportation, Housing & Local Government Refer Amended to Appropriations · lower
  14. Jan 8, 2025 Introduced In House - Assigned to Transportation, Housing & Local Government · lower

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