Iowa Code § 321.432
Horns and warning devices
Redline — January 1, 2012 → current.View current text →
Current — January 1, 2026
As of January 1, 2012
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. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with the horn but shall not otherwise use such horn when upon a highway.
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. The driver of a motor vehicle shall when reasonably necessary to ensure safe operation give audible warning with the horn but shall not otherwise use such horn when upon a highway.
Referred to in
For applicable scheduled fine, see §805.8A, subsection 3
For applicable scheduled fine, see §805.8A, subsection 3
Official source: Iowa Legislature. Reproduced from public-domain Iowa statutes; confirm against the official source for the current text. Not legal advice.