Indiana Code
Chapter 5. Horns and Emergency Warning Signals
9-19-5-1. Necessity of Horn; Audibility

Sec. 1. A motor vehicle, when operated upon a highway, must 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 (200) feet. However, a horn or other warning device may not emit an unreasonably loud or harsh sound or a whistle.
[Pre-1991 Recodification Citation: 9-8-6-35(a) part.]
As added by P.L.2-1991, SEC.7.