A motorcycle is a two-wheeled , single-track motor vehicle powered by an engine. Styles of motorcycles changes according to the task for which they are designed. Motorcycles are the most widespread the least expensive forms of motorised transport in many parts of the world. Street and off-road motorcycle are the two major type of motorcycle. Within these, there are many different types of motorcycles for many different purposes.Choppers,Cruisers,electric motorcycles,Mini bikes,Mopeds,Scooters etc are street motorcycle.Motocross,Supermotos,Dual-sports,Enduros are the off-road motorcycle.
A motorcycle is broadly defined by law in some countries for the purposes of registration, taxation or licensing riders as a two-wheel motor vehicle "fit to drive." Other countries distinguished between mopeds and other small bikes and the larger, more powerful vehicles.