A bicycle, or bike, is a pedal-driven, human-powered vehicle with two wheels attached to a frame, one behind the other. The International Union of Cycling adds the provision that the seat be more or less above the pedals, thus excluding recumbent bicycles.
First introduced in 19th-century Europe, bicycles now number over one billion worldwide, providing the principal means of transportation in many regions, notably China and the Netherlands. They are also a popular form of recreation, and have been adapted for use in many other fields of human activity, including children's toys, adult fitness, military and local police applications, courier services, and cycle sports.
The basic shape and configuration of the bicycle's frame, wheels, pedals, saddle, and handlebars have hardly changed since the first chain-driven model was developed around 1885, although many important details have since been improved, especially since the advent of modern materials and computer-aided design. These have allowed for a proliferation of specialized designs for individuals who pursue a particular type of cycling.
The bicycle has affected history considerably, in both the cultural and industrial realms. In its early years, bicycle construction drew on pre-existing technologies; more recently, bicycle technology has, in turn, contributed ideas in both old and newer areas... more
Bicycle - Wikipedia, the free encyclopedia
Thu, 25 Jun 2009 22:19:00 GMT
A bicycle, bike, or cycle is a pedal-driven, human-powered vehicle with two wheels attached to a frame, one behind the other. A person who rides a bicycle is called a cyclist or a ... Visit
Bicycle .net :: cycling news, bike product reviews :: Tour de France ...
Wed, 01 Jul 2009 16:28:00 GMT
July 1st, 2009. BRUSSELS, July 1, 2009 (AFP) - Dutch cyclist Thomas Dekker has been ruled out of the Tour de France three days before the start after testing positive for the ... Visit
Bicycle touring - Wikipedia, the free encyclopedia
Tue, 02 Jun 2009 06:11:00 GMT
Bicycle touring is a leisure travel activity which involves travelling by bicycle for the pleasure of the journey rather than through need or to race. Visit
The History of the Bicycle
Sun, 28 Jun 2009 04:36:00 GMT
Bicycle - the modern vehicle name dates from 1869 - whose precursor was the velocipede Visit
bicycle: Definition from Answers.com
Tue, 30 Jun 2009 06:14:00 GMT
bicycle n. A vehicle consisting of a light frame mounted on two wire-spoked wheels one behind the other and having a seat, handlebars for steering, Visit
Bicycle Warehouse
Wed, 01 Jul 2009 15:52:00 GMT
Huge Inventory of the Finest Bicycles, Bike Parts, Accessories, and Clothing at the Best Prices. The Best Customer Service in the Cycling Industry. Visit
Bicycle.com Bikes, Bicycle Types
Thu, 25 Jun 2009 19:13:00 GMT
Descriptions of different bicycle types including road, mountain, cruiser, bmx, and exercise. Visit
Bicycle Alliance of Washington
Wed, 01 Jul 2009 13:44:00 GMT
The Bicycle Alliance of Washington - Advocates for bicyclists and a bike-friendly Washington Visit
Dynamic Bicycles - Road Bikes, Commuter Bicycles, Chainless Bicycles ...
Thu, 25 Jun 2009 19:20:00 GMT
Road Bicycles, Commuter Bicycles, Chainless Bicycles - using Shimano internal gear hubs. Bikes that deliver more fun and less maintenance. Road bike, commuter bicycle, shaft drive ... Visit
Bicycle Trailers & Child Bike Seats - Reviews & Fast Shipping
Sun, 28 Jun 2009 04:43:00 GMT
Child bike trailers, bicycle cargo trailers, & child bike seats - by BOB, Burley, Chariot, Instep, Schwinn and more - with Customer Reviews & Fast Shipping! Visit
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