9.10.050   Public property noise limits.
   (a)   No person shall produce, suffer or allow to be produced by any machine or device, or any combination of same, on public property, a noise level more than fifteen dB above the local ambient at a distance of twenty-five feet or more, unless otherwise provided in this chapter.
   (b)   Sound performances and special events not exceeding eighty dBA measured at a distance of fifty feet are exempt from this chapter when approval therefor has been obtained from the appropriate governmental entity, except as provided in Section 22.04.180 of this code.
   (c)   Vehicle horns or other devices primarily intended to create a loud noise for warning purposes, shall not be used when the vehicle is at rest, or when a situation endangering life, health or property is not imminent.
(Ord. 4634 § 2 (part), 2000)