CHEYENNE, WY -- The National Park Service has approved a plan to restrict snowmobile numbers in Yellowstone National Park to less than half of last winter's limit.

Yellowstone announced Thursday it will allow up to 318 snowmobiles and up to 78 snowcoaches per day in the park for the next two winter seasons.

The park allowed 720 daily snow machine trips last winter.

The state of Wyoming opposes curtailing park snowmobile use
because of the potential economic impact on surrounding communities.

The state has gone to court in hopes of blocking the reduction.