Utah · Utah Code — Title 41, Motor Vehicles
Utah Code Title 41 § 41-6a-1626: Mufflers -- Prevention of noise, smoke, and fumes -- Air pollution control devices.
What this law says, in plain English
Vehicles must be equipped with functioning mufflers to prevent excessive noise and may not emit visible contaminants during operation, except during engine warm-up or heavy towing. Violations are infractions subject to fines.
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