Like all devices with mechanical moving parts, bicycles require a certain amount of regular maintenance and replacement of worn parts. A bicycle is relatively simple compared with a car, so some cyclists choose to do at least part of the maintenance themselves. Some components are easy to handle using relatively simple tools, while other components may require specialist manufacturer-dependent tools. They also presaged a move away from public transit [125] that would explode with the introduction of the automobile.

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Damien Newton (16 October 2008). "Metro Making Room for Bikes on Their Trains". LA.StreetsBlog.Org . Retrieved 12 February 2010. Cyclist, Average Joe (10 April 2017). "How the Bicycle Became a Symbol for Women's Emancipation". Average Joe Cyclist . Retrieved 12 August 2022. Around the turn of the 20th century, bicycles reduced crowding in inner-city tenements by allowing workers to commute from more spacious dwellings in the suburbs. They also reduced dependence on horses. Bicycles allowed people to travel for leisure into the country, since bicycles were three times as energy efficient as walking and three to four times as fast. Some US companies, notably in the tech sector, are developing both innovative cycle designs and cycle-friendliness in the workplace. Foursquare, whose CEO Dennis Crowley "pedaled to pitch meetings ... [when he] was raising money from venture capitalists" on a two-wheeler, chose a new location for its New York headquarters "based on where biking would be easy". Parking in the office was also integral to HQ planning. Mitchell Moss, who runs the Rudin Center for Transportation Policy & Management at New York University, said in 2012: "Biking has become the mode of choice for the educated high tech worker". [84] Cossalter, Vittore (2006). Motorcycle Dynamics (Seconded.). Lulu. pp.241–342. ISBN 978-1-4303-0861-4.In line with the European financial crisis, in Italy in 2011 the number of bicycle sales (1.75million) just passed the number of new car sales. [129] Environmental impact Bicycles in Utrecht, Netherlands In the 1870s many cycling clubs flourished. They were popular in a time when there were no cars on the market and the principal mode of transportation was horse-drawn vehicles, such the horse and buggy or the horsecar. Among the earliest clubs was The Bicycle Touring Club, which has operated since 1878. By the turn of the century, cycling clubs flourished on both sides of the Atlantic, and touring and racing became widely popular. The Raleigh Bicycle Company was founded in Nottingham, England in 1888. It became the biggest bicycle manufacturing company in the world, making over two million bikes per year. [41] a b Bluejay, Michael. "Safety Accessories". Bicycle Accessories. BicycleUniverse.info. Archived from the original on 8 October 2006 . Retrieved 13 September 2006. Historically, materials used in bicycles have followed a similar pattern as in aircraft, the goal being high strength and low weight. Since the late 1930s alloy steels have been used for frame and fork tubes in higher quality machines. By the 1980s aluminum welding techniques had improved to the point that aluminum tube could safely be used in place of steel. Since then aluminum alloy frames and other components have become popular due to their light weight, and most mid-range bikes are now principally aluminum alloy of some kind. [ where?] More expensive bikes use carbon fibre due to its significantly lighter weight and profiling ability, allowing designers to make a bike both stiff and compliant by manipulating the lay-up. Virtually all professional racing bicycles now use carbon fibre frames, as they have the best strength to weight ratio. A typical modern carbon fiber frame can weighs less than 1 kilogram (2.2lb). Brown, Sheldon. "One-Speed Bicycle Coaster Brakes". Archived from the original on 29 November 2010 . Retrieved 1 December 2010. Coaster brakes were invented in the 1890s.

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The 1968 Vienna Convention on Road Traffic of the United Nations considers a bicycle to be a vehicle, and a person controlling a bicycle (whether actually riding or not) is considered an operator. The traffic codes of many countries reflect these definitions and demand that a bicycle satisfy certain legal requirements before it can be used on public roads. In many jurisdictions, it is an offense to use a bicycle that is not in a roadworthy condition. [ citation needed] Winters, M; Brauer, M; Setton, EM; Teschke, K (2010). "Built environment influences on healthy transportation choices: bicycling versus driving". J Urban Health. 87 (6): 969–93. doi: 10.1007/s11524-010-9509-6. PMC 3005092. PMID 21174189. Questions for Women's Bicycling Pioneer Georgena Terry". Velojoy. 4 July 2012. Archived from the original on 25 August 2012 . Retrieved 14 July 2021. Utility bicycle, mountain bicycle, racing bicycle, touring bicycle, hybrid bicycle, cruiser bicycle, BMX bike, tandem, low rider, tall bike, fixed gear, folding bicycle, amphibious cycle, cargo bike, recumbent, electric bicycle

AeroVelo Eta: bullet-shaped bike sets new human-powered speed record". International Business Times. 21 September 2016 . Retrieved 29 November 2016. Norcliffe, Glen (2001). The Ride to Modernity: The Bicycle in Canada, 1869–1900. Toronto, Ontario: University of Toronto Press. ISBN 978-0-8020-8205-3. Dunlop, What sets Dunlop apart, History, 1889". Archived from the original on 2 April 2011 . Retrieved 27 February 2018. a b c "bicycle". Oxford English Dictionary (Onlineed.). Oxford University Press. (Subscription or participating institution membership required.)

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Bicycles offer an important mode of transport in many developing countries. Until recently, bicycles have been a staple of everyday life throughout Asian countries. They are the most frequently used method of transport for commuting to work, school, shopping, and life in general. In Europe, bicycles are commonly used. [85] They also offer a degree of exercise to keep individuals healthy. [86] Basic mountain bicycles and hybrids usually have front suspension only, whilst more sophisticated ones also have rear suspension. Road bicycles tend to have no suspension. Our Impact". Bicycles Against Poverty. Archived from the original on August 27, 2013 . Retrieved 2013-08-07. a b Jen Lukenbill. "About My Planet: Bamboo Bikes". Archived from the original on 25 October 2012 . Retrieved 14 January 2013.

Bamboo bicycles made in Zambia (TV news). Tokyo: NHK World News in English. 14 January 2013. Archived from the original on 15 January 2013. Bulletin des lois de la République française (1873) 12th series, vol. 6, p. 648, patent no. 86,705: "Perfectionnements dans les roues de vélocipèdes" ("Improvements in the wheels of bicycles"), issued 4 August 1869.