HCC §24-115
When emergency vehicles can use their sirens
Read the official text at hawaiicounty.gov ↗Emergency vehicles may have sirens that are loud enough to be heard from far away. But drivers can only use the siren when responding to an emergency or chasing someone breaking the law. They must sound it to warn people and other drivers.
everyone
The ordinance, as written (Hawaiʻi County) — Use of siren by emergency vehicles
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.
Any authorized emergency vehicle may be equipped with a siren capable of emitting sound audible under normal conditions from a distance of not less than five hundred feet and of a type complying with section 24-3(40), but such siren shall not be used except when such vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which latter events the driver of such vehicle shall sound the siren when necessary to warn pedestrians and other drivers of the approach thereof.
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.