(a) No person at any time shall operate any sound amplification system located inside of, outside of but attached to, or held by a person inside, a motor vehicle if the sound produced:
(1) Is plainly audible at a distance of 100 feet or more from the motor vehicle, or
(2) Is louder than necessary for convenient hearing by persons inside the motor vehicle in areas adjoining churches or schools.
(b) A law enforcement officer who hears a sound that is plainly audible, as defined herein, shall measure the sound according to the following standards:
(1) The primary means of detection shall be by the officer’s ordinary auditory senses, so long as the officer’s hearing is not enhanced by any mechanical device, such as a microphone or hearing aid.
(2) The officer shall have a direct line of sight and hearing to the motor vehicle producing the sound so that he or she can readily identify the offending motor vehicle and the distance involved.
(3) The officer need not determine the particular words or phrases being produced or the name of any song or artist producing the sound. The detection of a rhythmic bass reverberating type sound is sufficient to constitute a plainly audible sound.
(c) The motor vehicle from which the plainly audible sound is produced shall be located upon, operated, stopped or parked in a street, highway, parking lot, private or public driveway or yard within the city.
(Ord. 2026. Passed 12-14-00)