A scooter is a style of two-wheeled motor vehicle traditionally defined by such characteristics as a step-through frame, wheels under 16 "in diameter and a motor located under the rider and rear. Well that throughout the history of scooters, were models that challenged or challenged this definition, incorporating elements or drawings of motorcycles (distinguished by a reservoir between the rider and the handlebars and a motor located under the rider and l 'front of the vehicle) and mopeds (which have pedals), the evolution over the past 20 years have expanded the "Scooter" label to include a wide range of
vehicles and featuring many different models and technologies capabilities. scooters modern cover a wide range of models: step-by-step or more executives, small or large wheels, fairings before boards of directors or on the ground, and manual or automatic transmissions (found on most new models of scooter).

At one end of the current market, the Vespa LX series reflects the history of scooters: small wheels, floor boards, front fascia, fairing storage inside. At the other end, the Honda Big Ruckus has no bodywork,floor or step-through frame, but is still classified as a scooter because of its small wheels and engine placement. The Piaggio MP3, with two front wheels (three wheels in total) reflects the fluid nature ofthe scooter ranking. Scooters modern have a wide range of engine displacement, less than 50 cc to 799 cc over, and some engine sites in stark contrast to the traditional scooter (eg Yamaha T-Max 500, Suzuki Burgman 650 , Gilera GP800).

In general, the term "Scooter" is not defined in law, that laws are based on characteristics such as engine size and power and speed. The U.S. Department of Transportation defines a scooter as a platform for the operator of feet or integrated footrest, and a step-through architecture. [1] For the USA and Europe, scooters are classified by codes vehicle is "motorcycles" or, for those who have 50cc or smaller engines, "mopeds." Each are subject to the laws applicable to their ranking.