(a)    No person shall operate any motor of a motor vehicle of a weight in excess of four tons (8,000 pounds) for a consecutive period longer than two minutes which operation shall raise the noise level above the ambient noise level of the neighborhood by more than six decibels, between the hours of 9:30 p.m. and 7:00 a.m. of the following day or on Sundays or holidays. This section shall not apply to buses operated for the transportation of passengers while standing in established bus turnarounds, bus terminals, bus parking lots and bus storage yards.
   (b)    Whoever violates this section is guilty of a misdemeanor of the third degree and shall be subject to the penalty provided in Section 698.02. (Ord. 1999-52. Passed 11-9-99.)