543.11 TRAFFIC NOISE.

   No vehicle operating either on the public right of way or on private property shall exceed the maximum sound pressure level of eighty decibels dB(A), except that for vehicles over a gross volume weight of 8,000 pounds on a state highway or a prescribed truck route, or in commercial or industrial zones that are not adjacent to a residential zone, the maximum sound pressure level shall not exceed eighty-eight decibels dB(A).

(1964 Code Sec. 99.11)

543.12 ADDITIONAL STANDARDS.

   If the sound radiated from any source is not smooth and continuous and is not radiated between the hours of 8:00 p.m. and 6:00 a.m., one or more of the corrections in the table below shall be added or deducted from each of the decibel levels above.

 

Type of Operation or Character of Sound	Correction in Decibels
Sound source operates only for an hour once a day during 8 a.m. to 6 p.m.	Add 5 dB(A)*
Sound source operates only for 30 minutes or less once a day during 10 a.m. to 4 p.m.	Add 10 dB(A)*
Sound of impulsive character (hammering, etc.)	Deduct 5 dB(A)
Sound of periodic character (hum, screech, etc.)	Deduct 5 dB(A)

* Apply one of these corrections only.

(1964 Code Sec. 99.12)

543.13 ENFORCEMENT.

   The Building Inspector or his duly authorized representative is authorized to enforce the provisions of this chapter.

(1964 Code Sec. 99.13)