Speed limits are the same as the posted road limit - outside of road row's, no speed limit. There are 1,038 miles of groomed trails in Utah. There are 4,500 miles of groomed trails in Vermont. Snowmobilers from out of state must have certification that the after market exhaust meets the requirements that the manufacturer exhaust must meet. Helmets are not required.
Roads are open to snowmobiles only when marked and signed for use.
Road shoulders and ditches are open 3' off the plowed portion only. No speed limits. Snowmobiles must be registered in any state or province and must display a valid VT Trails Pass Decal. Trail Passes include VAST, County and Local Club Membership and is permission to operate on private land. There are 3,500 miles of groomed trails in Washington.