Delaware · Delaware Code — Title 21, Motor Vehicles
Del. Code (Title 21) § 4306: Horns and other sound devices; unlawful use
What this law says, in plain English
Motor vehicles must have functioning horns audible from 200 feet. Drivers cannot use horns excessively, when stationary, or in unnecessary situations. Operating amplified music audible 50+ feet away is prohibited, with exceptions for permitted parades and licensed vendors.
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