New Hampshire

Motorcycle:

“every motor vehicle having a seat or saddle for the use of the rider and designed to travel on not more than 3 wheels in contact with the ground, but excluding electric bicycles, tractors, and mopeds. The term shall also include 3-wheel scooters with enclosed cabs.”

Motor-Driven Cycle:

“any motorcycle or motor scooter with a motor which produces not to exceed 5 horse-power, and any bicycle with motor attached except any electric bicycle.”

Moped:

“a motor-driven cycle whose speed attainable in one mile is 30 miles per hour or less; if an internal combustion engine is used, the piston displacement shall not exceed 50 cubic centimeters and the power-drive system shall not require the operator to shift gears. ‘Moped’ shall not include an electric bicycle.”