Martin County, FL Environmental Rules: Vehicle Idling Restrictions (2026)

Martin County does not have a general no-idling ordinance for every vehicle in the county; the five-minute limit is a development standard that applies specifically to truck stops and travel centers permitted under LDR Sec. 1, the zoning-district use standard covering these large truck-parking developments. Once a truck stop is approved and built, Sec. D requires every tractor-trailer parking space to be wired for electrical power, heating, ventilation and air conditioning, so a parked truck can run its cab climate control from shore power instead of the diesel engine.

Truck tractor engines and refrigeration trailer engines may not idle more than five minutes except while being serviced, and engines must be shut off once the truck is parked. Refrigerated trailers are barred outright from running their units while parked; the facility must instead supply electrical power at the space to keep the reefer unit going. The property owner is responsible for keeping the electrical, heating and cooling equipment in working order after the development order is issued and for requiring drivers to use it.

The same subsection also caps parking of any recreational vehicle, passenger vehicle or tractor-trailer at 48 consecutive hours, and bars overflow parking outside the approved site plan or in the right-of-way. Truck stops must also comply with Chapter 67, Article 10 (Noise) of the county Code, and facilities handling more than 100 trucks must submit a professional noise analysis.