"A bicycle, also called a bike or cycle, is a human-powered or motor-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the ...
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other. A bicycle rider is called a cyclist, or bicyclist.
Bicycles were introduced in the late 19th century in Europe, and by the early 21st century, more than 1 billion were in existence at a given time. These numbers far exceed the number of cars, both in total and ranked by the number of individual models produced.They are the principal means of transportation in many regions. They also provide a popular form of recreation, and have been adapted for use as children´s toys, general fitness, military and police applications, courier services, bicycle racing, and bicycle stunts." - (en.wikipedia.org 01.03.2020)
