§ 72.20 ZONES OF QUIET.
   (A)   The Safety Director is authorized, where it is necessary to preserve health, to establish zones of quiet.
   (B)   Whenever authorized signs are erected indicating a zone of quiet, no person operating a motor vehicle within any such zone shall sound the horn or other warning device of the vehicle, except in an emergency.
(1980 Code, § 72.20) Penalty, see § 70.99