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California RV length limits

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

The law in California

Motorhome: 45 ft
"(A) A 45' house car (or "motorhome") on approved routes."
Trailer: 40 ft
"35400. (a) "A vehicle may not exceed a length of 40 feet." ... According to this definition, a vehicle includes a trailer being towed."
Overall combination: 65 ft
"35401. (a) No vehicle combinations may exceed a total length of 65 feet."
Triple towing: With conditions
"21715. (a) No passenger vehicle, or any other motor vehicle under 4,000 pounds, shall tow more than one vehicle, except for a tow dolly."
Height: 14 ft
"35250. No vehicle or load shall exceed a height of 14 feet measured from the surface upon which the vehicle stands"
Width: 102 in (8 ft 6 in)
"35100. (a) The total outside width of any vehicle or its load shall not exceed 102 inches."

Vehicle Lengths, Legal Truck Access, Caltrans (summarizes California Vehicle Code 35400, 35401, 21715), checked November 2026.

RV Length Limits by StateCalifornia

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Trailer length

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Truck and trailer or fifth wheel · California

Within the limits

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

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

Trailer length
WithinYours 32 ft · limit 40 ft
"35400. (a) "A vehicle may not exceed a length of 40 feet." ... According to this definition, a vehicle includes a trailer being towed."
Overall length
WithinYours 52 ft · limit 65 ft
"35401. (a) No vehicle combinations may exceed a total length of 65 feet."
"Your vehicle combination cannot exceed 65 feet. However, cities and counties may prohibit vehicle combination lengths over 60 feet, when posted (CVC §35401)."
"(Note: A vehicle combination, e.g. a motorhome towing a vehicle or trailer, may be up to 65 feet length. If the single-unit motorhome is 40 feet or less in length, the combination is not subject to the route restrictions for the 45' motorhome.)"

Width: 102 in (8 ft 6 in)

"35100. (a) The total outside width of any vehicle or its load shall not exceed 102 inches."

"35103. (a) A recreational vehicle may exceed the maximum width if the excess width is from an appurtenance that does not exceed six inches beyond either sidewall. (b) An appurtenance is an integral part of a vehicle and includes awnings, grab handles, lighting equipment, cameras, and vents."

"35109. Lights, mirrors, or devices which are required may extend beyond the permissible width no more than 10 inches on each side."

"35100. (c) A city or county may prohibit a width in excess of 96 inches upon highways under its jurisdiction."

Where to stay in California

37 RV parks listed in California.

See California RV parks

Common questions

RV length and towing questions

45 ft. California's law says: "(A) A 45' house car (or "motorhome") on approved routes."

65 ft overall. California's law says: "35401. (a) No vehicle combinations may exceed a total length of 65 feet."

With conditions. California's law says: "21715. (a) No passenger vehicle, or any other motor vehicle under 4,000 pounds, shall tow more than one vehicle, except for a tow dolly."

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