A moped is a motorized two-wheeled vehicle subject to local speed regulations. Typically, mopeds are restricted to 30-35 mph (about 50-55 km/h). Some localities require pedals, thus making them hybrid transport using both human power and machine power. The earliest mopeds, introduced in the early 1950s, were nothing but bicycles with a helper motor on top of the front wheel. These were commonly called autocycles. An example of this early type is the Solex brand.

Mopeds are a class of low powered motorized vehicles in legal literature normally defined by limits on engine displacement, speed, power output, or the requirement of pedals. Moped classification is designed to allow the use of small motorised vehicles avoiding safety restrictions and licensing charges of larger motorcycles. Motorized bicycles, small scooters and small motorcycles generally fit the definition of a moped. Typically, mopeds are restricted to 45-50 km/h (28-31 mph) and engines less than 50 cc. Some localities require pedals, thus making them hybrid transport, using both human power and machine power. Many jurisdictions consider them as "limited speed motorcycles." The earliest mopeds, introduced in the early 1950s, were nothing but bicycles with a helper motor in various locations, for example on top of the front wheel. These were commonly called cyclemotors. An example of this type is the Velosolex brand which simply had a rubber roller driving the front tyre. A more innovative design was known in the UK as the Cyclemaster. This had a complete powered rear wheel which was simply substituted for the bicycle rear wheel. It originated from a design by two DKW engineers in Germany. Slightly larger machines, commonly with a 98cc engine were known as autocycles. However, some mopeds, such as the Czech-made Jawa, were derived from motorcycles. A further category of low-powered two-wheelers exists today in some jurisdictions for bicycles with helper motors¡ªthese are often defined as power-assisted bicycles or motorized bicycles. Some jurisdictions, however, may categorize these as a type of moped, creating a certain amount of confusion. Some mopeds are designed like cars, similar to microcar, for instance the French Aixam. Another type is the three wheeled (two front, one back) transport moped.

Motor Scooter

a wheeled vehicle with small wheels and a low-powered gasoline engine geared to the rear wheel.