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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.

Standards

A number of formal and industry standards exist for bicycle components, to help make spare parts exchangeable:

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  • ISO 5775 Bicycle tire and rim designations
  • ISO 8090 Cycles — Terminology (same as BS 6102-4)