• The Park Loop Road between Fabbri Picnic Area and Wildwoods Stables is closed to vehicles taller than 12’ 0”.
• The Park Loop Road between the Sieur de Monts and the entrance station is closed to vehicles taller than 12’ 2”.
• Stanley Brook Road is closed to vehicles taller than 10’ 4”.
• Fish House Road in Otter Cove is closed to vehicles taller than 11’ 6”.
• Duck Brook Road is closed to vehicles taller than 12’ 4”.
• Tour bus weights are limited to 27 tons GVW, in accordance with Maine state regulations.
• Commercial vehicles are prohibited from use on park roads without prior permission from the park superintendent. Trucks are generally limited to a total of three axles. All vehicles must be within state weight limits. 
• RVs and buses are prohibited on Sargent Drive, posted by the Town of Mount Desert.
• The southern end of Schooner Head Road, also known as Great Head Road, between the Schooner Head Overlook intersection and Great Head Parking Lot is closed to vehicles longer than 20 feet and to trailers.
• Bass Harbor Head Road is closed to buses and RVs longer than 20 feet and to trailers. 
• The size of recreational vehicles in Blackwoods and Seawall Campgrounds may not exceed 35’ in length and 11’ 8” in height. Extension pull-outs must fit within the site pads provided.

Parking
Parking is limited to:

• Parking lots and paved and gravel pull-outs
• The right lane of the one-way section of Park Loop Road from Bear Brook Picnic Area to the Stanley Brook Road junction, unless otherwise posted
• Parallel parking on the shoulders of the two-way section of Park Loop Road between Stanley Brook Road junction and the Jordan Pond Carriage Road gates
• Parallel parking along the south shoulder of the road to the Jordan Pond Boat Ramp

ATVs/Motorbikes
All motorized vehicles are prohibited on park trails and carriage roads. All-terrain vehicles are not allowed anywhere in the park.

Snowmobiles
Snowmobiles are permitted in certain areas of the park.