Page 37 - 2018-v.3-Part 2(EN)

4.16.6.2.2 Seat-post with suspension system

When tested by the method described in TBIS 4210-9:2016, 4.5.3, there shall be no fractures. The
design shall be such that in the event of failure of the suspension system, the two main parts do not
separate, nor does the upper part (i.e. the part to which the saddle would be attached) become free to
swivel in the lower part.

4.17 Spoke protector

Bicycles for young adults as well as city and trekking bicycles with multiple free-wheel/cassette
sprockets shall be fitted with a spoke-protector guard to prevent the chain from interfering with or
stopping rotation of the wheel through improper adjustment or damage. All other types of bicycles
covered by this part of TBIS 4210 can be fitted with a spoke protector.

4.18 Luggage carriers

If luggage carriers are fitted or provided, they shall comply with ISO 11243.

4.19 Road test of a fully assembled bicycle

When tested by the method described in TBIS 4210-3:2016, 4.3, there shall be no system or
component failure and no loosening or misalignment of the saddle, handlebar, controls, or reflectors.

The bicycle shall exhibit stable handling in braking, turning, and steering, and it shall be possible to
ride with one hand removed from the handlebar (as when giving hand signals), without difficulty of
operation or hazard to the rider. If the bicycle is fitted with a luggage carrier, the test shall be carried out
with the maximum load capacity indicated on the luggage carrier.

NOTE 1 See also TBIS 4210-4:2017, 4.6.5.7 item h), test method — simple track test.

NOTE 2 For structural integrity of a fully assembled bicycle see TBIS 4210-3:2016, Annex A.

4.20 Lighting systems and reflectors

4.20.1 General

Bicycles shall be equipped with reflectors at the front, rear and side. Bicycles shall be equipped with
lighting systems and reflectors in conformity with the national regulations in the country in which the
bicycle is marketed, because national regulations for lighting systems and reflectors differ from country
to country.

4.20.2 Wiring harness

When a wiring harness is fitted, it shall be positioned to avoid any damage by contact with moving parts
or sharp edges. All connections shall withstand a tensile force in any direction of 10 N.

4.20.3 Lighting systems

The lighting system consists of a front and a rear light. These devices shall comply with the provisions in
force in the country in which the product is marketed. If there are no forced provisions of these devices,
the lighting system shall comply with the requirements of ISO 6742-1.

4.20.4 Reflectors

These devices shall comply with the provisions in force in the country in which the product is marketed.
If there are no forced provisions of these devices, the retro-reflective devices shall comply with the
requirements of ISO 6742-2.

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