Page 9 - 2018-v.2-Part 1(EN)

TBIS 4210-1:2018

Cycles — Safety requirements for bicycles —

Part 1:

Terms and definitions

1 Scope

This part of TBIS 4210 specifies terms and definitions related to safety and performance
requirements for the design, assembly, and testing of bicycles and sub-assemblies having saddle
height as given in Ta ble 1.

This part of TBIS 4210 does not apply to specialized types of bicycle such as delivery bicycles,
recumbent bicycles, tandems, BMX bicycles, and bicycles designed and equipped for use in severe
applications such as sanctioned competition events, stunting, or aerobatic manoeuvres.

NOTE For bicycles with a maximum saddle height of 435 mm or less, see ISO 8124-1, and with a maximum
saddle height of more than 435 mm and less than 635 mm, see ISO 8098.

Table 1 — Maximum saddle height
Dimensions in millimetres

City and
Racing
Bicycle type trekking bicy- Young adult Mountain bicycles
bicycles
bicycles
cles
Maximum 635 or more
saddle height 635 or more and less than 635 or more 635 or more
750

2 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

2.1
aerodynamic extension
extension (or extensions) secured to the handlebar or stem, to improve the rider’s aerodynamic posture

2.2
band brake
brake in which a circumferential band is wrapped around the exterior of a cylindrical drum which is
attached to or incorporated in the wheel-hub

2.3
bar end
extension secured to the end of a handlebar to provide an additional hand grip and usually with its axis
perpendicular to the axis of the end of the handlebar

2.4
bicycle
two-wheeled vehicle that is propelled solely or mainly by the muscular energy of the person on that
vehicle, in particular by means of pedals

1