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Idaho RV length limits

Idaho's limits for motorhomes, trailers, triple towing and height, quoted from its own law. Enter your rig to check it.

The law in Idaho

Motorhome: 45 ft
"(a) When a single motor vehicle ... 45 feet."
Trailer: 48 ft
"(b) When a trailer or semitrailer, except as noted in this subsection ... 48 feet."
Overall combination: 75 ft
"(c) When a motor vehicle and one (1) or more trailers, except as noted in subsection (3)(b), (3)(d) and (3)(e) of this section ... 75 feet."
Triple towing: Allowed
"(c) When a motor vehicle and one (1) or more trailers, except as noted in subsection (3)(b), (3)(d) and (3)(e) of this section ... 75 feet."
Height: 14 ft
"(2) The height of a vehicle, including the load thereon, shall not exceed ... 14 feet."
Width: 102 in (8 ft 6 in)
"(1) The width of a vehicle, including any load thereon, except as noted below, shall not exceed ... 8 1/2 feet."

Idaho Code 49-1010, Size of vehicles and loads, checked November 2026.

RV Length Limits by StateIdaho

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Trailer length

Overall length

Height

Truck and trailer or fifth wheel · Idaho

Within the limits

Yes. Your truck and trailer is within Idaho's length limits.

Add your height to check it against Idaho's 14 ft limit.

Trailer length
WithinYours 32 ft · limit 48 ft
"(b) When a trailer or semitrailer, except as noted in this subsection ... 48 feet."
Overall length
WithinYours 52 ft · limit 75 ft
"(c) When a motor vehicle and one (1) or more trailers, except as noted in subsection (3)(b), (3)(d) and (3)(e) of this section ... 75 feet."

Width: 102 in (8 ft 6 in)

"(1) The width of a vehicle, including any load thereon, except as noted below, shall not exceed ... 8 1/2 feet."

"No vehicle shall exceed the dimensions specified below, except that certain devices determined by the board as necessary for the safe and efficient operation of motor vehicles, including energy conservation devices, shall be excluded from the calculation of width or length."

Where to stay in Idaho

44 RV parks listed in Idaho.

See Idaho RV parks

Common questions

RV length and towing questions

45 ft. Idaho's law says: "(a) When a single motor vehicle ... 45 feet."

75 ft overall. Idaho's law says: "(c) When a motor vehicle and one (1) or more trailers, except as noted in subsection (3)(b), (3)(d) and (3)(e) of this section ... 75 feet."

Allowed. Idaho's law says: "(c) When a motor vehicle and one (1) or more trailers, except as noted in subsection (3)(b), (3)(d) and (3)(e) of this section ... 75 feet."

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