No, Utah prohibits exhaust systems producing excessive noise under state noise pollution laws and local ordinances. Modified exhausts exceeding 92 decibels (dB) are illegal, with enforcement by Utah Division of Air Quality and local law enforcement. Recent 2026 amendments to the Utah Noise Control Act tighten penalties for repeat offenders.
Key Regulations for Loud Exhausts in Utah
- Decibel Limits: Exhaust noise exceeding 92 dB measured at 50 feet is prohibited under Utah Code § 41-6a-1626, aligning with EPA noise standards.
- Local Ordinances: Salt Lake City, Provo, and Ogden enforce additional restrictions, often capping noise at 88 dB during nighttime hours (10 PM–7 AM).
- Enforcement & Penalties: Violations incur fines up to $750 for first offenses, escalating to misdemeanor charges for repeat violations under Utah’s 2026 regulatory updates.
Utah’s Division of Air Quality collaborates with municipal police departments to conduct periodic sound-level testing at traffic stops and vehicle inspection stations. Modified exhausts, including straight pipes and excessively loud mufflers, are explicitly targeted. Out-of-state vehicles must comply if operating in Utah for more than 30 consecutive days.