No Action, current use and management practices in the parks and Parkway continue. The concept under alternative B provides a moderate range of affordable and appropriate winter visitor experiences. Air quality and oversnow motor vehicle sound would be addressed, and by the winter of 2008-2009, strict emission and sound requirements would be required by all oversnow vehicles entering the parks. This alternative also emphasizes an adaptive approach to park resource management, which would allow the results of new and ongoing research and monitoring to be incorporated. Alternative C maximizes winter visitor opportunities for a range of park experiences.
Alternative D stresses visitor access to unique winter features in the parks.
This alternative emphasizes clean, quiet modes of travel, visitor activities focused near destination areas, and a minimization of conflicts between nonmotorized and motorized users. Under alternative E the protection of wildlife and natural resources is emphasized while allowing park visitors access to a range of winter recreation experiences. Alternative E uses an adaptive planning approach that allows new information to be incorporated over time. Alternative F stresses the protection of wildlife resources by focusing winter visitor activities in YNP outside important winter range for large ungulate species, and closing north and west roads to winter use. For GTNP and the Parkway, this alternative emphasizes the protection of all resources by focusing developments, oversnow motorized trails and zones, and nonmotorized trails and zones in certain areas, while still allowing park visitors opportunities for a range of winter recreational experiences.