Monroe County, FL Noise Ordinances: Vehicle Noise (2026)

Monroe County Code § 17-132 governs noise from motor vehicles operated off the public right-of-way and, separately, subjects vehicles on the right-of-way to Florida's decibel statute as adopted by reference. Subsection (a) reaches essentially any engine-powered vehicle, whether licensed or not, including commercial or recreational racing vehicles, motorcycles, dirt bikes, mopeds, go-carts, amphibious vehicles, campers, power boats and personal watercraft, with a narrow carve-out letting a vessel owner run an engine briefly to flush it with fresh water. 415 for vehicles on the public right-of-way, then imposes the county's own independent duties: every vehicle, moped, scooter or motorcycle must carry a muffler that is in constant operation and properly maintained to prevent disturbing noise, and no person may engage in rapid throttle advancing or revving of an internal combustion engine while the vehicle is at a standstill or in the flow of traffic when that revving is not necessary for safe operation.

Subsection (c) lets any law enforcement officer with jurisdiction issue a citation directly under this section, separate from the general disturbing-noise citation process in Sec. 17-130. Because the muffler and no-revving duties sit in the county's own ordinance rather than only the state statute, they give deputies patrolling the Keys an independent basis for a stop even where the state decibel threshold might not be clearly met on a meter.