Moped
A moped is a vehicle with two wheels and a motor, like a motorcycle but smaller. It usually has pedals, like a bicycle.
The size of the motor is usually 49cc, much smaller than most motorcycle motors. Because of the small motor, mopeds usually can not go faster than 50 km/h (30 mph). Mopeds use less fuel than motorcycles, but some people complain that mopeds create more air pollution than motorcycles. Most of the time, you need a special license to ride a motorcycle but you only need an ordinary driver's license to ride a moped. It is usually illegal to ride a moped without a helmet.
