Hawaii RV length limits

The law in Hawaii

• Motorhome: 45 ft

  "No single motor vehicle or other power vehicle having a total overall length greater than forty-five feet, including load, shall be operated or moved upon any public road, street, or highway within the State, except as provided in this subsection;"

• Overall combination: 65 ft

  "no combination of vehicles having a total overall length greater than sixty-five feet, including load, shall be operated or moved upon any public road, street, or highway other than interstate highways and certain qualifying federal aid highways as designated by the director of transportation, within the State, except as provided in this subsection."

• Triple towing: Not allowed

  "No combination of motor vehicles or other power vehicles coupled together shall consist of more than two units"

• Height: 14 ft

  "No motor vehicle or other power vehicle having an overall height greater than fourteen feet, including load, shall be operated or moved upon any public road, street, or highway within the State except as hereinafter provided; and provided further that no motor vehicle or other power vehicle shall be operated under or through any bridge or other highway structure if the height of the motor vehicle or other power vehicle exceeds the posted height for the bridge or other highway structure."

• Width: 108 in (9 ft)

  "No motor vehicle or other power vehicle having an overall width greater than nine feet, including load, shall be operated or moved upon any public road, street, or highway within the State, except as hereinafter provided."

HRS §291-34, Size of vehicles; width, height, and length, checked November 2026.