Cycling is a means of transport, a form of recreation, and a sport. It involves riding bicycles, unicycles, tricycles and other human powered vehicles. A bicycle, the most notable instrument of cycling, is a pedal-driven land vehicle with two wheels attached to a frame, one behind the other. As a sport, cycling is governed internationally by the Union Cycliste Internationale, headquartered in Switzerland.
Bicycles were introduced in the 19th century and now number about one billion worldwide. They are the principal means of transportation in many parts of the world.
Cycling is widely regarded as a very effective and efficient mode of transportation optimal for short to moderate distances. Bicycles provide numerous benefits by comparison with motor vehicles, including the sustained physical exercise necessarily involved in cycling, that cycling involves a reduced consumption of fossil fuels, less air or noise pollution, much reduced traffic congestion, easier parking, greater maneuverability, and access to both roads and paths.
(also abbreviated CaBi
) is a bicycle sharing system
that serves Washington, D.C.
; Arlington County, Virginia
; the city of Alexandria, Virginia
; and Montgomery County, Maryland
. Its 265 stations and 1,800-plus bicycles are owned by these local governments and operated in a public-private partnership
with Alta Bicycle Share
. Opened in September 2010, the system was the largest bike sharing service
in the United States until New York City's Citi Bike
began operations in May 2013.
In its first 22 months (September 2010 to June 2012), Capital Bikeshare enrolled more than 24,000 annual members and 2,800 monthly members, sold more than 180,000 24-hour and 3-day passes, and recorded 2.3 million trips. In the system's second year (September 2011 to September 2012), users took 1,851,857 trips.
On September 20, 2013, Montgomery County opened the first 14 of 50 stations planned for installation by the end of the year.
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Alberto Contador Velasco
(Spanish pronunciation: [alˈβerto kontaˈðor βeˈlasko]
; born 6 December 1982) is a Spanish professional cyclist and has been widely considered to be the best climbing specialist
and stage racer in the world. Contador is one of five riders to have won all three Grand Tours
of road cycling. He was the winner of the 2007 Tour de France
with the Discovery Channel
team. With the Astana team he has won the 2008 Giro d'Italia
, the 2008 Vuelta a España
and the 2009 Tour de France
. He initially also won the 2010 Tour de France
with this team, and the 2011 Giro d'Italia
with team Saxo Bank-SunGard, only to be stripped of these titles later having been found guilty of a doping offence.
Contador's career has been marked by doping allegations. The Operación Puerto doping case led his Astana-Würth team (a team unrelated to the current Astana team) to withdraw en masse from the 2006 Tour de France before it began. He was eventually cleared of any wrongdoing, but was also accused of doping after his victory in the race the following year. In September 2010, Contador announced that he had tested positive for clenbuterol in a control taken during that year's Tour de France, in which he finished as winner, but although he was suspended during an investigation, he was cleared by the RFEC. A review by the Court of Arbitration for Sport initially set for June 2011 was later deferred several times until February 2012, when the CAS decided that Contador be stripped from the results obtained in the 2010 Tour de France and later, which also caused him to lose his 2011 Giro d'Italia victory. He was also suspended until 5 August 2012, and his contract with Team Saxo Bank was annulled. Upon the completion of his ban, Contador rejoined the renamed Team Saxo Bank-Tinkoff Bank.
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