Trail users collide in crowded forests in Colorado

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Colorado — with about 27.1 million forest visitors, more than any other state — is ground zero in the effort to stop riders and hikers from bushwhacking their own trails and in sorting out the sometimes conflicting uses.

"People go to the forest with expectations — a quiet hike, motoring through the woods. When those expectations clash, you get tensions," said Peter Newman, a Colorado State University professor studying natural resources and recreation.