TAMPERING WITH NOISE CONTROLS
Federal law prohibits the removal or rendering inoperative by
any person, other than for purposes of maintenance, repair, or
replacement, of any device or element of design incorporated
into such vehicle for the purpose of noise control prior to its
sale or delivery to the ultimate purchaser or while it is in use.
Federal Law also prohibits the use of such vehicle after such
device or element of design has been removed or rendered
inoperative by any person.
Among those acts presumed to constitute tampering are the
acts listed below:
• Removal of fender apron absorbers, fender apron barriers,
underbody noise shields, or acoustical absorptive material.
• Removal of or rendering inoperative the engine speed
governor so as to allow engine speed to exceed manufacturer’s
specifi cations.
• Removal or modifi cation of air duct, air intake choke or
silencer, air cleaner, or air cleaner element.
• Removal of, or rendering inoperative, exhaust system
components including the catalyst inlet pipe, muffl er, outlet
pipe, resonator, or diffuser.
• Removal of the fan shroud. Removal of or rendering
inoperative the fan clutch.
New vehicles manufactured for sale in Canada must comply
with applicable provisions of Canada Motor Vehicle Safety
Standard 1106, Noise.
EXTERIOR NOISE
New vehicles which have a gross vehicle weight rating in
excess of 4536 kg [10,000 lb], include a partially or wholly
enclosed operator’s compartment, and are manufactured for
use in the United States, must comply with U.S. Environmental
Protection Agency’s exterior noise emission regulations for
medium and heavy trucks (40 CFR Part 205, Subpart B) which
establish a noise emission limit of 80 dB (A).
Linear Mode
