HCC §24-112
Horns must work and be used safely
Read the official text at hawaiicounty.gov ↗Every vehicle on a road must have a working horn that can be heard from at least 200 feet away. Drivers must use the horn when needed for safety, but cannot use it for other reasons or make very loud or harsh sounds.
everyone
The ordinance, as written (Hawaiʻi County) — Horn required; use
A copy, taken August 21, 2026. The version published by Hawaiʻi County is the one that governs, and it may have changed since. Check it before relying on anything here.
(a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. (b) The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with the driver’s horn, but shall not otherwise use such horn when upon a highway.
Published by the County of Hawaiʻi Office of the County Clerk.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.