p.2 T20017-1118
Motorized Bicycle (Moped) Definition and Restrictions
According to Massachusetts law (M.G.L. c.90§ 1), a motorized bicycle (moped) is defined as a pedal bicycle which has a
helper motor, or a non-pedal bicycle which has a motor, and meets all of the following :
1. Has a cylinder capacity of no more than fifty (50) cubic centimeters (cc)
2. Has an automatic transmission
3. Is capable of a maximum speed of not more than 30 m.p.h
4. Complies with all applicable Federal Motor Vehicle Safety Standards (M.G.L. c.90§ 1C)
The Registrar has determined that a motorized bicycle can have either two or three wheels in contact with the ground.
If a vehicle does not meet the definition of a motorized bicycle, it cannot be registered as such. Anyone who mis-
registers a motor vehicle as a “motorized bicycle” may be guilty of operating an unregistered, uninsured, uninspected,
and untitled “motor vehicle”, the operator may be cited, and the vehicle may be towed and stored at the owner’s
expense.
Note: If a vehicle cannot be registered as a motorized bicycle, it may meet the definition of a “Limited Use Motorcycle”
and be registered as such.
A Limited Use motorcycle, must meet both of the following:
1. Be certified by its manufacturer to meet Federal Motor Vehicle Safety Standards (FMVSS) for a motorcycle or
motor-driven cycle
2. Have a speed on a paved level surface that can exceed 30 m.p.h., but is not capable of exceeding 40 m.p.h.
If the vehicle does not meet the definition of a Limited Use Motorcycle, it cannot be registered as such.
Note: If the vehicle has been certified by its manufacturer to meet FMVSS as a motorcycle and is capable of exceeding
the speed of 40 m.p.h., it must be registered as a regular motorcycle.
If the vehicle has not been certified by its manufacturer to meet FMVSS as a motorcycle or motor-driven cycle and is
capable of exceeding the speed of 30 m.p.h., the vehicle cannot be registered or operated on the roads of the
Commonwealth.
Moped Operation Restrictions
a) Operator and any passenger must wear a helmet. The Registrar requires that the helmet meet or exceed the
standards established in the U.S. Department of Transportation’s (US DOT) FMVSS No. 218 for motorcycle
helmets (49 CFR 571.218).
b) Operator must be at least 16 years of age and have a valid driver’s license or learner’s permit.
c) Motorized bicycles may not be operated at a speed greater than 25 m.p.h.
d) Motorized bicycles may be operated on all public ways (except limited access or express state highways where
signs prohibiting bicycles have been posted).
e) Motorized bicycle operators are subject to all state traffic laws and regulations except:
i. Operator may keep to the right when passing a motor vehicle moving in travel lane; and
ii. Operator shall signal by either hand when stopping or turning.
f) Motorized bicycles may be operated on bicycle lanes adjacent to ways but not on recreational bicycle paths.
g) Any violation is subject to a fine of up to $25 (1st Offense); $25-$50 (2nd Offense); $50-$100 (3rd Offense).