For the butterfly genus, see Bicyclus. For other uses, see Bicycle (disambiguation).
A bicycle, also called a pedal cycle, bike, push-bike or cycle, is a human-powered or motor-assisted, pedal-driven, single-track vehicle, with two wheels attached to a frame, one behind the other. A bicycle rider is called a cyclist, or bicyclist.
Bicycles were introduced in the 19th century in Europe. By the early 21st century there were more than 1 billion bicycles.[1][2] There are many more bicycles than cars.[3][4][5] Bicycles are the principal means of transport in many regions. They also provide a popular form of recreation, and have been adapted for use as children’s toys. Bicycles are used for fitness, military and police applications, courier services, bicycle racing, and artistic cycling
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