Florida Lawmakers Pass a Bill Replacing Decibel Limits With a Broader Noise Ban

Florida's House passed HB 543 on March 3 by a 1-vote margin against, repealing the state's current fixed decibel limits — 72 dB at speeds of 35 mph or under, 79 dB above that — in favor of a broader "plainly audible"/unreasonable-acceleration standard. The stated reasoning is enforcement difficulty: decibel meters are hard to use consistently and defensibly in the field, and lawmakers opted for a standard that doesn't require one.

A companion bill passed the Senate unanimously three days later. As of these reports, Governor DeSantis had not yet signed the legislation, so it isn't law yet — but if signed, the new standard would take effect July 1, 2026. Motorcycles and mopeds that meet EPA emissions standards are carved out with an exemption.

The noise provision is riding inside a broader transportation package that also touches yellow-light timing, school-zone speed cameras, golf cart registration, and license plate rules — meaning the loud-car provision is a small piece of a much larger bill, not a standalone crackdown.