10.08.030: EXCEEDING SPECIFIC NOISE LEVELS PROHIBITED:
   A.   No person shall operate either a motor vehicle or combination of vehicles at any time or under any condition of grade, load, acceleration or deceleration in such manner as to exceed the following noise limits for the category of motor vehicle, based on a distance of not less than fifty feet (50') from the centerline of travel, under test procedures established by this section and sections 10.08.040 and 10.08.050 of this chapter:
 
Type Of Vehicle
35 Miles Per Hour Or Less
Over 35 Miles Per Hour
Any motor vehicle with a manufacturer's GVW rating of 6,000 pounds or more, and any combination of vehicles towed by such motor vehicles manufactured:
 
 
Before January 1, 1973
88 dB(A)
90 dB(A)
After January 1, 1973
86 dB(A)
90 dB(A)
Any motorcycle manufactured:
 
 
Before January 1, 1973
88 dB(A)
92 dB(A)
After January 1, 1973
86 dB(A)
90 dB(A)
Any other motor vehicle, including passenger cars, and any combination of motor vehicles towed by such motor vehicle manufactured:
 
 
Before January 1, 1973
82 dB(A)
86 dB(A)
After January 1, 1973
78 dB(A)
84 dB(A)
 
   B.   This section and sections 10.08.040 and 10.08.050 of this chapter apply to the total noise from a vehicle or combination of vehicles, and shall not be construed as limiting or precluding the enforcement of any other provisions of this title relating to motor vehicle mufflers or noise control.
   C.   For the purpose of this section, a motor truck, truck tractor or bus that is not equipped with an identification plate or marking bearing the manufacturer's name and manufacturer's gross vehicle weight rating shall be considered as having a manufacturer's gross vehicle weight rating of six thousand (6,000) pounds or more if the unladen weight is more than five thousand (5,000) pounds. (Ord. 1231-72, 1972)