Rv Size

Depending upon the type, size and weight of your rig, your state of residence might require you to pass a test and/or have a special endorsement on your driver's license.

Many states have laws that limit the length of motorhomes on their highways to a maximum of 40 feet. Some states limit the length of two combined vehicles (truck and trailer, motorhome and car) to a maximum of 55 feet.

Wide-body vehicles (those over 96 inches wide) are restricted to designated highways in some states. A trucker's atlas, available in most truck stops, will highlight those roads where it is permissible to drive a wide-body vehicle.

The legal weight limit on most interstates is 20,000 pounds on a single axle. Which explains the need for tandem axles on some of the larger motorhomes.

The ferry to Alaska charges by the linear foot and adds a 25% surcharge on those vehicles over 96 inches wide.

Older bridges, particularly covered bridges, frequently have weight limitations.

There are campgrounds and campsites that simply cannot accommodate the longer, higher and wider RVs. Many state parks have winding roads, limited to MH up to 25 ft long.

(found here)

Comparing Medium vs Heavy Duty Truck for towing big (30') 5W - why HDT.

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