Maine

Motorcycle:

“a motor vehicle that has a seat or a saddle for the use of the rider and is designed to travel with only 2 or 3 10-inch or larger diameter wheels in ground contact and has a motor with a cylinder capacity of more than 50 cubic centimeters or an electric motor with a capacity of not less than 1,500 watts.”

Moped:

“a motorized device designed to travel with only 2 or 3 10-inch or larger diameter wheels in contact with the ground and that: A. May have fully operative pedals for propulsion by human power; B. Has an electric or a liquid fuel motor with a cylinder capacity displacement not exceeding 50 cubic centimeters or an electric motor with a capacity under 1,500 watts; and C. Is equipped with a power drive system that functions only directly or automatically and does not require clutching or shifting by the operator after the drive system is engaged. ‘Moped’ does not include an electric personal assistive mobility device or an electric bicycle.”

_{(Source: https://legislature.maine.gov/statutes/29-A/title29-Asec101.html)}

	Licensing	Minimum Age	Registration	Insurance	Helmet
Motorcycle	Motorcycle Endorsement	16	Required	Required	Required if under 18 Required for operators under a learner’s permit or within one year of completing a driving test Required for passengers of an operator who is required to wear a helmet
Moped	Moped License (or any other license)	16	Required	Not Required	See above

_{(Sources: https://www.maine.gov/sos/bmv/registration/scooters.html;
https://legislature.maine.gov/lawlibrary/what-is-maines-law-on-helmets/9470;
https://legislature.maine.gov/statutes/29-A/title29-A.pdf;
https://www.maine.gov/sos/bmv/licenses/motoristhandbook.pdf)}