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Are dirt bikes street legal in Idaho?

Idaho's law on plating and riding a dirt bike on public roads, quoted from its own page, with the equipment and license rule.

The law in Idaho

Yes, with a plate. Idaho lets you register a dirt bike for public roads if it meets the state's rules.

"Such vehicle shall be titled and may be approved for motorcycle registration pursuant to section 49-402, Idaho Code, upon certification by the owner of the installation and use of conversion components that make the motorbike compliant with federal motor vehicle safety standards."

Idaho Code 49-114. Definitions (motorbike, motorcycle), checked November 2026.

Street Legal Dirt Bike Check

Dirt bike · Idaho. Yes, with a plate. Idaho lets you register a dirt bike for public roads if it meets the state's rules.

Dirt bike · Idaho

Street legal with a plate

Yes, with a plate. Idaho lets you register a dirt bike for public roads if it meets the state's rules.

"Such vehicle shall be titled and may be approved for motorcycle registration pursuant to section 49-402, Idaho Code, upon certification by the owner of the installation and use of conversion components that make the motorbike compliant with federal motor vehicle safety standards."

Conditions

  • "The conversion must meet the current Federal Motor Vehicle Safety Standards (FMVSS) in effect at the time of application, and also meet current Idaho Title 49, Chapter 9 requirements for operation on all public roadways."
  • "(4) For operation of an all-terrain vehicle, utility type vehicle or motorbike, excluding a motorbike with an engine displacement of fifty (50) cubic centimeters or less, on city, county or highway district roads or highways open to such use, a restricted vehicle license plate fee pursuant to section 49-450, Idaho Code, shall be paid."
  • "(8) When operating an off-highway vehicle upon highways, off-highway vehicles must not travel at speeds greater than the posted speed limit or forty-five (45) miles per hour, whichever is less."

Registration and plates

"Dual-Sport - A motorcycle designated for use on and off-highway that has a highway motorcycle license plate. Conversion of an off-highway motorbike to dual-sport highway license is legal in Idaho."
Required equipment (8)
  • 106-Brake Hoses
  • 108-Lamps; Reflective Devices and Associated Equipment
  • 111-Rearview Mirrors
  • 116-Brake Fluids
  • 119-Tires
  • 120-Tires and Wheels
  • 122-Brake Systems
  • 123-Controls and Displays

Driver's license

"If a motorbike has been self-certified as a motorcycle, the rider must have a motorcycle endorsement on the driver’s license."
More from Idaho's law
"(9) "Motorbike" means any self-propelled two (2) wheeled motorcycle or motor-driven cycle, excluding tractors, designed for or capable of traveling off developed roadways and highways and also referred to as trailbikes, enduro bikes, trials bikes, motocross bikes or dual purpose motorcycles."
"A motorbike that has been equipped for highway use and meets FMVSS found in 49 CFR Part 574 as well as equipment requirements of Title 49, Chapter 9, Idaho Code may be self-certified to be a motorcycle by the owner"

Source: Idaho Code 49-114. Definitions (motorbike, motorcycle), checked November 2026.

Also read on: Idaho Department of Parks and Recreation: Off-Highway Vehicle Law Enforcement Guide · Idaho Transportation Department: Motorcycle Rider's Handbook, July 2026 · ITD 3018 Motorbike to Motorcycle Conversion Self-Certification Affidavit · Idaho Code 49-402 (registration fees; restricted vehicle license plate) · Idaho Code 49-426. Exemptions from operating fees (OHVs on highways) · Idaho Code 67-7101. Definitions (motorbike)

Find off-road parks to ride without the road questionRiding a side-by-side or an ATV? Check its road law

A guide to each state's published law, not legal advice. City and county ordinances and posted signs decide which roads are open; the linked law is the authority.

  • Each state's own law, quoted
  • Plate, equipment and license
  • Free, no account

Riding in Idaho

36 off-road parks listed in Idaho. National forest roads open to your vehicle today.

See Idaho off-road parks

Other states

Dirt bike road laws in other states

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Common questions

Street legal dirt bike questions

Yes, with a plate. Idaho lets you register a dirt bike for public roads if it meets the state's rules. Source: Idaho Code 49-114. Definitions (motorbike, motorcycle).

Idaho's law says: "Dual-Sport - A motorcycle designated for use on and off-highway that has a highway motorcycle license plate. Conversion of an off-highway motorbike to dual-sport highway license is legal in Idaho."

Idaho's law says: "If a motorbike has been self-certified as a motorcycle, the rider must have a motorcycle endorsement on the driver’s license."

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