This document is being revised to clarify the definition of Turf in section 3.8 and Test Surfaces in section 5.3.1 which will align this procedure with the surfaces specified in SAE J192, Maximum Exterior Sound Level for Snowmobiles. In addition, the braces in Equations 3 and 4 where transposed to correctly match the appropriate equation to the unit of measure.
Recreational vehicles and equipment
Also known as: SAE J 45
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