Page 11 - 2018-v.3-Part 2(EN)

TBIS 4210-2:2018

ISO 6742-1, Cycles — Lighting and retro-reflective devices — Part 1: Lighting and light signalling devices

ISO 6742-2, Cycles — Lighting and retro-reflective devices — Part 2: Retro-reflective devices

ISO 9633, Cycle chains — Characteristics and test methods

ISO 11243, Cycles — Luggage carriers for bicycles — Concepts, classification and testing

3 Terms and definitions

For the purposes of this document, the terms and definitions given in TBIS 4210-1 apply.

4 Requirements

4.1 Toxicity

Any items which come into intimate contact with the rider (i.e. causing any hazard due to sucking or
licking) shall comply with any national regulations specific to children’s products.

4.2 Sharp edges

Exposed edges that could come into contact with the rider’s hands, legs, etc., during normal riding or
normal handling and normal maintenance shall not be sharp, e.g. deburred, broken, rolled, or processed
with comparable techniques.

NOTE Refer to ISO 13715:2000.

4.3 Security and strength of safety-related fasteners

4.3.1 Security of screws

Any screws used in the assembly of suspension systems, brackets attached to electric generators, brake
mechanisms and mudguards to the frame or fork, and the saddle to the seat-post shall be provided with
suitable locking devices, e.g. lock-washers, lock-nuts, thread locking compound, or stiff nuts. Fasteners
used to assemble hub and disc brakes should have heat-resistant locking devices.

NOTE 1 The screws used to attach the hub generator are not included.

NOTE 2 For example, mechanical and physical properties of bolts are specified in ISO 898-1.

4.3.2 Minimum failure torque

The minimum failure torque of bolted joints for the fastening of handle bars, handlebar stems, bar ends,
saddle and seat-posts shall be at least 50 % greater than the manufacturer’s recommended tightening
torque.

4.3.3 Folding bicycle mechanism

If folding bicycle mechanism is provided, it shall be designed so that the bicycle can be locked for use in
a simple, stable, safe way, and when folded, no damage shall occur to any cables. No locking mechanism
shall contact the wheels or tyres during riding, and it shall be impossible to unintentionally loosen or
unlock the folding mechanisms during riding.

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