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Are dirt bikes street legal in New Hampshire?

New Hampshire'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 New Hampshire

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

"Any OHRV or trail bike, as defined by RSA 215-A:1, V and XIV, respectively, which is also registered for use on the highways of the state shall comply with all OHRV requirements concerning safety equipment, sound emission levels, spark arrestors as well as all other requirements pertaining to the registration of motor vehicles."

RSA Chapter 215-A: Off Highway Recreational Vehicles and Trails, checked November 2026.

Street Legal Dirt Bike CheckNew Hampshire

Which state?

Dirt bike · New Hampshire

Street legal with a plate

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

"Any OHRV or trail bike, as defined by RSA 215-A:1, V and XIV, respectively, which is also registered for use on the highways of the state shall comply with all OHRV requirements concerning safety equipment, sound emission levels, spark arrestors as well as all other requirements pertaining to the registration of motor vehicles."

Conditions

"OHRVs or trail bikes with knobby pattern tires, which have been registered for highway use, shall be permitted on all highways within the state except interstate highways."

Registration and plates

"XV. "Registered for Highway Use" means any OHRV as defined in RSA 215-A:1, VI or trail bike as defined in RSA 215-A:1, XIV which is registered for use on the highways of the state under the provisions of RSA 261. Said registered vehicles shall comply with the provisions of RSA 215-A:35-39."

Required equipment (3)

For OHRVs or trail bikes registered for use on the highway, directional flashers shall not be required unless said vehicle had this equipment installed as original equipment by the manufacturer.
For any trail bike registered for use on the highways, a high and low beam headlight shall not be required unless said vehicle had this equipment installed as original equipment by the manufacturer.
For any trail bike registered for use on highways, a speedometer and odometer shall not be required unless said vehicle had this equipment installed as original equipment by the manufacturer.

Riding in New Hampshire

20 off-road parks listed in New Hampshire. National forest roads open to your vehicle today.

See New Hampshire off-road parks

Common questions

Street legal dirt bike questions

Yes, with a plate. New Hampshire lets you register a dirt bike for public roads if it meets the state's rules. Source: RSA Chapter 215-A: Off Highway Recreational Vehicles and Trails.

New Hampshire's law says: "XV. "Registered for Highway Use" means any OHRV as defined in RSA 215-A:1, VI or trail bike as defined in RSA 215-A:1, XIV which is registered for use on the highways of the state under the provisions of RSA 261. Said registered vehicles shall comply with the provisions of RSA 215-A:35-39."

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