Browse Publications Technical Papers 2002-01-1656

Over-Snow Vehicle Sound Level Measurements 2002-01-1656

This study of over-snow vehicle sound levels was conducted to provide new and additional information for preparation of the Winter Use Plan Supplemental Environmental Impact Statement (SEIS) for Yellowstone and Grand Teton National Parks and the John D. Rockefeller, Jr., Memorial Parkway. The pass-by sound level of a variety of over-snow vehicles was measured at operational speeds that would be experienced under normal use of the vehicles while in the national park units. The pass-by testing included four different types of snow coaches and various models of snowmobiles. All testing was conducted on the same day in the same location with the same terrain and background conditions. Two additional 4-stroke snowmobiles were tested in January 2002 in Yellowstone National Park under typical winter conditions.


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