139—Stationary noise levels—car-type vehicles and motor bikes and motor trikes
(1) In this rule—
"car-type vehicle" means—
(a) a car; or
(b) a utility truck, panel van, or another motor vehicle derived from a car design; or
(c) another motor vehicle with 4 or more wheels that is built mainly to carry not over 9 people including the driver.
(2) The stationary noise level of a car-type vehicle, or motor bike or motor trike, must not exceed—
(a) for a car-type vehicle built after 1982—90 dB(A); or
(b) for another car-type vehicle—96 dB(A); or
(c) for a motor bike or motor trike built after February 1985—94 dB(A); or
(d) for another motor bike or motor trike—100 dB(A).