Description / Abstract:
This SAE Standard establishes the test procedure, environment, and
instrumentation for determining
the maximum exterior sound level for highway motor trucks, truck
tractors, and buses. The test
results obtained by this test procedure give an objective measure of
the maximum noise level
emitted by vehicles under a prescribed condition. A subjective rating
of the annoyance caused by
vehicles in use may not be directly related to this type of noise
level measurement.