No, Delaware prohibits excessive or modified exhaust noise under Title 21 § 4416, with local law enforcement empowered to issue citations for violations exceeding 92 dB(A) during stationary tests.
Key Regulations for Loud Exhausts in Delaware
- Decibel Limits: Delaware enforces a maximum of 92 dB(A) for stationary exhaust noise tests, stricter than the federal 95 dB(A) standard.
- Modified Systems: Aftermarket exhaust modifications that amplify noise beyond original manufacturer specifications are illegal unless certified by the Delaware Division of Motor Vehicles.
- Local Enforcement: Municipalities like Wilmington and Dover may impose additional fines, with 2026 revisions expanding police authority to impound vehicles for repeat offenses.
Delaware’s regulations derive from the Delaware Motor Vehicle Code, aligning with the Model Traffic Ordinance adopted by the Delaware League of Local Governments. Violations incur fines up to $287.50 for first offenses, escalating to $1,000 for subsequent citations within 12 months. The Delaware Department of Transportation’s 2025 enforcement directive mandates annual training for law enforcement on noise measurement protocols, ensuring consistency across jurisdictions. Exemptions exist solely for emergency vehicles or vehicles with historical registrations under Title 21 § 4417.