ISO 6742-3:2023

INTERNATIONAL ISO
STANDARD 6742-3
Second edition
2023-08
Cycles — Lighting and retro-reflective
devices —
Part 3:
Installation and use of lighting and
retro-reflective devices
Cycles — Éclairage et dispositifs rétroréfléchissants —
Partie 3: Installation et usage des éclairages et des dispositifs
rétroréfléchissants
Reference number
© ISO 2023
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Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2  Normative references . 1
3  Terms and definitions . 1
4 General . 1
4.1 Accuracy of the measurement devices . 1
4.2 Conditions . 2
4.3 Order of tests. 2
5 Requirements . 2
5.1 Lighting devices . 2
5.1.1 Installation requirements . 2
5.1.2 Fixation requirements . . 2
5.1.3 Control requirements . . 2
5.2 Retro-reflective devices . 3
6 Test method . 3
6.1 Lighting devices . 3
6.1.1 Test method for installation . 3
6.1.2 Test method for fixation . 3
6.2 Retro-reflective devices . 5
7 Manufacturer’s instructions .5
7.1 General . 5
7.2 Lighting devices . 5
7.3 Retro-reflective devices . 6
Bibliography . 7
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
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such patent rights.
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expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 149, Cycles, Subcommittee SC 1, Cycles
and major sub-assemblies.
This second edition cancels and replaces the first edition (ISO 6742-3:2015), which has been technically
revised.
The main changes are as follows:
— 4.1 was changed from "Tolerances" to "Accuracy of measurement devices";
— improvement of Clause 7.
A list of all parts in the ISO 6742 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
The test method with power spectral density (PSD) (see 6.1.2.2) reflects today's state of the art and
should be preferred to the sine sweep vibration test (see 6.1.2.3).
v
INTERNATIONAL STANDARD ISO 6742-3:2023(E)
Cycles — Lighting and retro-reflective devices —
Part 3:
Installation and use of lighting and retro-reflective devices
1 Scope
This document is applicable to lighting and retro-reflective devices used on cycles intended to be used
[1] [2]
on public roads and, especially, bicycles complying with ISO 4210 and ISO 8098 .
This document specifies the safety requirements and test methods of lighting and retro-reflective
devices for fastening devices, control, (guidelines for maintenance), instructions for mounting and use.
2  Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 6742-1, Cycles — Lighting and retro-reflective devices — Part 1: Lighting and light signalling devices
IEC 60068-2-6, Environmental testing — Part 2-6: Tests — Test Fc: Vibration (sinusoidal)
3  Terms and definitions
F
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