Editing Bicycle (section)

=== Standards ===
A number of formal and industry standards exist for bicycle components to help make spare parts exchangeable and to maintain a minimum product safety.

The [[International Organization for Standardization]] (ISO) has a special technical committee for cycles, TC149, that has the scope of "Standardization in the field of cycles, their components and accessories with particular reference to terminology, testing methods and requirements for performance and safety, and interchangeability".

The [[European Committee for Standardization]] (CEN) also has a specific Technical Committee, TC333, that defines European standards for cycles. Their mandate states that EN cycle standards shall harmonize with [[List of ISO standards|ISO standards]]. Some CEN cycle standards were developed before ISO published their standards, leading to strong European influences in this area. European cycle standards tend to describe minimum safety requirements, while ISO standards have historically harmonized parts geometry.{{NoteTag|The TC149 ISO bicycle committee, including the TC149/SC1 ("Cycles and major sub-assemblies") subcommittee, has published the following standards:{{Citation needed|date=December 2012}}
* [[ISO 4210]] Cycles&nbsp;– Safety requirements for bicycles
* [[ISO 6692]] Cycles&nbsp;– Marking of cycle components
* [[ISO 6695]] Cycles&nbsp;– Pedal axle and crank assembly with square end fitting&nbsp;– Assembly dimensions
* [[ISO 6696]] Cycles&nbsp;– Screw threads used in bottom bracket assemblies
* [[ISO 6697]] Cycles&nbsp;– Hubs and freewheels&nbsp;– Assembly dimensions
* [[ISO 6698]] Cycles&nbsp;– Screw threads used to assemble freewheels on bicycle hubs
* [[ISO 6699]] Cycles&nbsp;– Stem and handlebar bend&nbsp;– Assembly dimensions
* [[ISO 6701]] Cycles&nbsp;– External dimensions of spoke nipples
* [[ISO 6742]] Cycles&nbsp;– Lighting and retro-reflective devices&nbsp;– Photometric and physical requirements
* [[ISO 8090]] Cycles&nbsp;– Terminology (same as BS 6102-4)
* [[ISO 8098]] Cycles&nbsp;– Safety requirements for bicycles for young children
* [[ISO 8488]] Cycles&nbsp;– Screw threads used to assemble head fittings on bicycle forks
* [[ISO 8562]] Cycles&nbsp;– Stem wedge angle
* [[ISO 10230]] Cycles&nbsp;– Splined hub and sprocket&nbsp;– Mating dimensions
* [[ISO 11243]] Cycles&nbsp;– Luggage carriers for bicycles&nbsp;– Concepts, classification and testing

Other ISO Technical Committees have published various cycle relevant standards, for example:
* [[ISO 5775]] Bicycle tire and rim designations
* [[ISO 9633]] Cycle chains&nbsp;– Characteristics and test methods

Published cycle standards from CEN TC333 include:
* [[EN 14764]] City and trekking bicycles – Safety requirements and test methods
* [[EN 14765]] Bicycles for young children – Safety requirements and test methods
* [[EN 14766]] Mountain-bicycles – Safety requirements and test methods
* [[EN 14781]] Racing bicycles – Safety requirements and test methods
* [[EN 14782]] Bicycles – Accessories for bicycles – Luggage carriers
* [[EN 15496]] Cycles – Requirements and test methods for cycle locks

Yet to be approved cycle standards from CEN TC333:
* [[EN 15194]] Cycles&nbsp;– Electrically power assisted cycles ([[Electric bicycle#CITEREF2015|EPAC]] bicycle)
* [[EN 15532]] Cycles&nbsp;– Terminology
* 00333011 Cycles – Bicycles trailers – safety requirements and test methods
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