337.30 SOUND AMPLIFICATION SYSTEMS IN MOTOR VEHICLES.
   (a)   No person shall operate a motor vehicle on a street or highway if the sound from any sound amplifying equipment located inside of, outside of but attached to, or held by a person inside, the motor vehicle, is discernible at a distance of twenty-five feet or more from the vehicle.
   (b)   This section does not apply to any of the following circumstances:
      (1)   The sound amplifying equipment of the motor vehicle is being operated to request medical or vehicular assistance to warn others of a hazardous road, vehicle operating, or traffic safety condition.
      (2)   The motor vehicle is an emergency vehicle or public safety vehicle and is on an emergency run.
      (3)   The motor vehicle is owned and operated by the state, a political subdivision, or public utility.
      (4)   The motor vehicle is participating in a parade for which the sponsors of the parade have obtained the proper permits.
      (5)   The Sound Amplifying Equipment of the motor vehicle is being operated as a requirement of federal or state law.
      (6)   Vendors of ice cream and related products. (Ord. 2131. Passed 4-17-95.)
   (c)   Except as otherwise provided in this subsection, whoever violates this section is guilty of a minor misdemeanor. If, within one year of the offense, the offender previously has been convicted of or pleaded guilty to one predicate motor vehicle or traffic offense, whoever violates this section is guilty of a misdemeanor of the fourth degree. If, within one year of the offense, the offender previously has been convicted of two or more predicate motor vehicle or traffic offenses, whoever violates this section is guilty of a misdemeanor of the third degree.