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
Fri, 23 Jul 2010 07:45:00 GMT
A bicycle, also known as a bike, pushbike or cycle, is a pedal-driven, human-powered, single-track vehicle, having two wheels attached to a frame, one behind the other. Visit
Bicycle.com Bikes, Gear, Training, Reviews, Maintenance
Sat, 24 Jul 2010 12:16:00 GMT
Information on all Bicycle Types: mountain bikes, road bikes, bmx and more. Also bicycle parts and accessories, cycling apparel, bike shops, and more. Visit
Trek Bicycle Corporation
Sat, 24 Jul 2010 07:51:00 GMT
Information about this Waterloo company's bicycles, accessories, and dealers. Also has a section for bicycling trails, clubs, and events. Visit
bicycle: Definition from Answers.com
Wed, 21 Jul 2010 03:44:00 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 .net :: cycling news, races, bike product reviews, training ...
Mon, 26 Jul 2010 11:02:00 GMT
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Segregated cycle facilities - Wikipedia, the free encyclopedia
Sat, 24 Jul 2010 18:35:00 GMT
Bicycle Transportation. MIT Press. pp. 24?25. ISBN 0-262-56079-8. ^ Ullrich, Howard. "SCR 47 Statewide Bicycle Committee" (PDF). Final Report. Visit
Bicycling Magazine
Mon, 26 Jul 2010 18:40:00 GMT
A road biking, mountain bike, and cycling magazine. Bike reviews and gear, cycling and mountain biking tips, training articles, expert biking advice, bicycle maintenance know-how ... Visit
Bicycle.org
Mon, 26 Jul 2010 06:44:00 GMT
Find bicycle videos, cycling news, bike tours, information about bicycles, parts and accessories, bicycling tips, including bike safety and maintenance, and more. Visit
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Mon, 26 Jul 2010 20:34:00 GMT
Huge Inventory of the Finest Bicycles, Bike Parts, Accessories, and Clothing at the Best Prices. The Best Customer Service in the Cycling Industry. 6 Locations in San Diego and ... Visit
Bicycle.com Bicycle Brands
Fri, 23 Jul 2010 15:01:00 GMT
Description of popular bicycle brands such as trek, schwinn, huffy, mongoose, specialized, gt, kona, cove Visit
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