The bottom line is that snowmobile sound emissions have been reduced by nearly 94 percent since 1968 to a level that ... The industry and sport of snowmobiling annually generate nearly two billion dollars in total sales of machines, accessories, parts and related services and activities. ... These vintage machines were essentially without exhaust silencing, and lacked other sophisticated features whichanbsp;...
|Title||:||Extension of authorizations under the Noise pollution control act of 1972|
|Author||:||United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Transportation and Commerce|