Moped First named because it was a bicycle with a motor (literally a motorized pedal vehicle), today's mopeds have a step-through frame (with or without pedals), small wheels (typically 10 inches) and have a 50cc (cee-cee is moto-speak for cubic centimeter) or smaller motor. Mopeds generally top out at 28 mph (less with increased rider weight) and may achieve triple-digit gas mileage. Scooter A scooter (motor scooter) has the same step-through frame and smaller wheels like a moped, but a more powerful motor — 50cc - 250cc. Scooters usually have automatic transmissions and come with lights, turn signals and horns. Scooters offer superior mobility with higher top speeds and good gas mileage. For example, a 150cc scooter has a top speed of 60 mph and may get up to 70 mpg, while a 250cc scooter can reach 75 mph but might get fewer than 60 mpg. However, you may not be able to use a scooter on the freeway. Check with your local DMV regarding size or horsepower minimums. E-bike (electric bikes) Electric bicycles have pedals, an electric motor and have no more than 750 watts. There are different types of e-bikes: Class 1: Motor activates when the rider is peddling. The motor is also capped at 20 miles per hour. Class 2: Same as a Class 1, but the motor can propel the rider without any peddling. Class 3: Same as a Class 1, but has a speedometer and the motor is capped at 28 miles per hour. If you think an e-bike is right for you, review some of our e-bike safety tips. Motorcycle The bike's design is what distinguishes a motorcycle. The engine and gas tank are forward and between the driver's knees. Motorcycles usually have a manual transmission in which drivers need to use a clutch and shift gears. Motorcycles typically have 16-inch tires and the driver sits upright with their back perpendicular to the road. Motorcycles generally have an engine size that enables them to share the road with all motorized vehicles.