Why did Idaho Fish and Game apply the Motorized Hunting Rule to entire units?

To improve clarity of the rule and help both hunters and other motorized recreationalists understand where and when the rule applies.  Previously, the rule could have applied to hunting big game, upland game animals and upland game birds in specific hunts within designated units.  Now, the new rule applies only to all Big Game animals, including moose, bighorn sheep and mountain goats in designated units, and only applies from August 30 through December 31.