Colorado has passed a new law to crack down on noisy commercial trucks. The legislation, which ramps up the requirements for mufflers on commercial vehicles, aims to address what some communities have described as persistent noise pollution along highway corridors.
On May 13, the Colorado General Assembly approved House Bill 25-1039 and forwarded it to Governor Jared Polis for his signature. The bill significantly strengthens existing regulations that only required mufflers on trucks with engine compression brakes, commonly known as Jake Brakes.
Under the new law, all commercial vehicles must have a muffler that can either be visually inspected or come with documentation proving its compliance. Lawmakers also doubled the fine for violations from $500 to $1000, though truckers can receive a 50% reduction if they install a proper muffler within 30 days of citation.
“Golden’s unique location at the intersection of major highways has made us particularly vulnerable to noise from commercial vehicles lacking proper mufflers,” said Laura Weinberg, Mayor of Golden, in a statement following the bill’s passage.
The city has been especially vocal in pushing for stricter regulations. Weinberg credited former City Councilor Casey Brown and local residents for their advocacy efforts.
Industry representatives acknowledge the issue stems from a small segment of truckers. Greg Fulton, President of the Colorado Motor Carriers Association, explained that some drivers remove mufflers because they prefer both the appearance and louder sound of their trucks without them.
Truckers will have some time to adjust their vehicles. The legislation isn’t scheduled to take effect until July 1, 2027, giving commercial operators two years to ensure compliance.
For communities situated near major trucking routes, the change can’t come soon enough. The bill represents a victory for residents who have long complained about disruptive engine noise affecting their quality of life.