Bicycle

A bicycle, or bike, is a pedal-driven land vehicle with two wheels attached to a frame, one behind the other. First introduced in 19th-century Europe, it evolved quickly into the familiar current design. With over one billion in the world today, bicycles provide the principal means of transportation in many regions and a popular form of recreation and transport in others.

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The bicycle has affected history considerably in both the cultural and industrial realms. In its early years, bicycle construction drew on pre-existing technologies, while more recently bicycle technology has contributed in turn to other, newer areas. Beyond recreation and transportation, bicycles have been adapted for use in many occupations, in the military, local policing, and in sports as well. A recurring theme in bicycling has been the tension between bicyclists and drivers of motor vehicles, each of whom argue for their fair share of the world's roadways.

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Land vehicle: A land vehicle is a vehicle that travels on land, as opposed to other media such as water or air. Some examples of land vehicles are:...

Wheel: A wheel is a circular object that, together with an axle, allows low friction in motion, by rolling. Common examples are found in transport applications. More generally the term is also used for circular objects rotating for other purposes, such as a wheel and axle and a flywheel....

19th-century: :Alternative meaning: Nineteenth Century (periodical)...

Bicycle related Images and Photos (experimental)

A Bicycle	The Bicycle	Bicycle Dream No 2	Bicycle Spoke LED Light
Bicycle Pokeno Card Game	The Bicycle Thief	Bicycle Racers in Motion	A Bicycle Made For Two
The Bicycle Thief 1999	The James Bicycle	Jumbo Bicycle Index Playing Cards	Bicycle Racks in Park Near Potsdamer Platz