(a) No person shall install, operate or cause to be installed or operated any sound amplifying device, other than a warning signal, mounted upon any vehicle which is propelled over the streets of the City or stationed thereon or so close thereto as to be plainly audible to persons upon the streets or in public places, without first obtaining a permit therefor in accordance with Section 669.04.
(b) For purposes of this chapter, “sound amplifying device” shall mean a machine or device for the amplification of the human voice, music or any other sound. “Sound amplification device” shall not include factory-installed automobile radios when used and heard only by occupants of the vehicle in which the device was installed or warning devices on authorized emergency vehicles or vehicles used solely for traffic safety purposes.
(Ord. 278-92. Passed 4-19-93.)