No, Maryland prohibits exhaust systems producing excessive noise under Transportation Article §21-1008, with local jurisdictions like Baltimore City and Montgomery County enforcing stricter decibel limits via municipal codes. Violations may trigger fines up to $1,000 under state law, while some counties mandate muffler inspections during annual vehicle inspections. Recent 2026 legislative proposals aim to expand enforcement by requiring decibel testing at inspection stations.
Key Regulations for Loud Exhausts in Maryland
- State Decibel Limits: Maryland caps exhaust noise at 92 decibels (A-weighted) for vehicles under 3,500 lbs, measured at 50 feet, per COMAR 11.14.01.03. Exceeding this triggers a “modified exhaust” violation.
- Local Ordinances: Baltimore City and Montgomery County enforce additional restrictions, such as prohibiting “gutted” or straight-pipe systems, with fines ranging from $250 to $750 for repeat offenses.
- Inspection Mandates: As of 2024, Maryland requires muffler integrity checks during emissions inspections; non-compliant systems fail inspection, blocking vehicle registration renewal until corrected.