Maine adopts practical test for measuring motorcycle sound
June 13, 2011
Maine has adopted a simple yet reliable
testing procedure that allows motorcyclists to prove their bikes don't
violate Maine's motor vehicle sound law, the American Motorcyclist
Association (AMA) reports.
Under a new law that went into
effect on May 26, motorcyclists ticketed for excessive sound emitting
from their motorcycle exhausts can go to a certified inspection station
for sound testing.
There, the exhaust system would be tested
using the Society of Automotive Engineers (SAE) J2825 stationary sound
testing procedure -- "Measurement of Exhaust Sound Pressure Levels of
Stationary On-Highway Motorcycles" -- which the SAE developed and
adopted with support from the Motorcycle Industry Council in May 2009.
Under the SAE J2825 standard, which the AMA has endorsed, decibel
limits range from 92 dBA at idle for all motorcycles, to 100 dBA at
certain RPMs for various motorcycles, depending on the type of engine.
If a motorcycle meets these limits during the certified testing, then it
is evidence that the motorcycle doesn't violate the state's sound law.
"This new law is good news for responsible motorcyclists who ride in
Maine because it provides an objective way to prove that a motorcycle
doesn't violate the state's sound law, rather than relying on subjective
judgments," said Imre Szauter, AMA government affairs manager. "We
applaud the state of Maine -- the first in the nation -- for adopting
the SAE J2825 standard."
The AMA has long maintained a position of strong opposition to excessive motorcycle sound. The
SAE J2825 standard is at the heart of model legislation developed by
the AMA for use by jurisdictions seeking a simple, consistent and
economical way to deal with sound complaints related to on-highway
motorcycles within the larger context of excessive sound from all
For information on the AMA's model legislation, go to http://www.americanmotorcyclist.com/Libraries/Rights_Documents_Other/Model_On_Highway_Sound_Ordinance-1.sflb.ashx.
To see the AMA's position on excessive motorcycle sound, see http://www.americanmotorcyclist.com/Rights/PositionStatements/ExcessiveMotorcycleSound.aspx.