FprEN ISO 4210-2

Cycles - Safety requirements for bicycles - Part 2: Requirements for city and trekking, young adult, mountain and racing bicycles (ISO 4210-2:2023)

This document specifies safety and performance requirements for the design, assembly, and testing of bicycles and sub-assemblies, and lays down guidelines for manufacturer’s instructions on the use and care of such bicycles.
This document applies to young adult bicycles with maximum saddle height of 635 mm or more and less than 750 mm, city and trekking bicycles, mountain bicycles, and racing bicycles that have a maximum saddle height of 635 mm or more including folding bicycles.
This document 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 national regulations for ride-on toys, and with a maximum saddle height of more than 435 mm and less than 635 mm, see ISO 8098.

Fahrräder - Sicherheitstechnische Anforderungen an Fahrräder - Teil 2: Anforderungen für City- und Trekkingfahrräder, Jugendfahrräder, Geländefahrräder (Mountainbikes) und Rennräder (ISO 4210-2:2023)

Dieses Dokument legt sicherheitstechnische und leistungsbezogene Anforderungen an konstruktive Ausführung, Zusammenbau und Prüfung von Fahrrädern und Baugruppen fest und stellt Richtlinien für das Benutzerhandbuch des Herstellers hinsichtlich der Benutzung und Pflege dieser Fahrräder bereit.
Dieses Dokument gilt für Jugendfahrräder mit einer maximalen Sattelhöhe von 635 mm oder höher, aber weniger als 750 mm, City- und Trekkingfahrräder, Geländefahrräder und Rennräder, die über eine maximale Sattelhöhe von 635 mm oder höher verfügen, sowie Falträder.
Dieses Dokument gilt nicht für spezialisierte Fahrradtypen wie Lastenfahrräder, Liegefahrräder, Tandems, BMX Fahrräder und Fahrräder, die für harte Anwendungen wie genehmigte Wettbewerbsveranstaltungen, Trickfahrten oder Kunstsprungfiguren ausgelegt und ausgerüstet sind.
ANMERKUNG   Bei Fahrrädern mit einer maximalen Sattelhöhe von 435 mm oder weniger siehe nationale Bestimmungen für Aufsitzspielzeug und bei einer maximalen Sattelhöhe von mehr als 435 mm und weniger als 635 mm siehe ISO 8098 [8].

Cycles - Exigences de sécurité pour les bicyclettes - Partie 2: Exigences pour bicyclettes de ville et tout chemin (trekking), jeunes adultes, tout-terrain et de course (ISO 4210-2:2023)

Kolesa - Varnostne zahteve za kolesa - 2. del: Zahteve za mestna in treking kolesa, kolesa za mlade, gorska in tekmovalna kolesa (ISO/FDIS 4210-2:2022)

General Information

• Status: Not Published
• Publication Date: 24-Jan-2023
• ICS: 43.150 - Cycles
• Technical Committee: CEN/TC 333 - Cycles
• Drafting Committee: CEN/TC 333 - Cycles
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 25-Jan-2023
• Completion Date: 25-Jan-2023
• Ref Project: kSIST FprEN ISO 4210-2:2022 - Cycles - Safety requirements for bicycles - Part 2: Requirements for city and trekking, young adult, mountain and racing bicycles (ISO/FDIS 4210-2:2022)

Relations

• Replaces: EN ISO 4210-2:2015 - Cycles - Safety requirements for bicycles - Part 2: Requirements for city and trekking, young adult, mountain and racing bicycles (ISO 4210-2:2015)
• Effective Date: 18-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN ISO 4210-2:2022
01-januar-2022

Kolesa - Varnostne zahteve za kolesa - 2. del: Zahteve za mestna in treking kolesa,

kolesa za mlade, gorska in tekmovalna kolesa (ISO/DIS 4210-2:2021)

Cycles - Safety requirements for bicycles - Part 2: Requirements for city and trekking,

young adult, mountain and racing bicycles (ISO/DIS 4210-2:2021)

Fahrräder - Sicherheitstechnische Anforderungen an Fahrräder - Teil 2: Anforderungen

für City- und Trekkingfahrräder, Jugendfahrräder, Geländefahrräder (Mountainbikes) und

Rennräder (ISO/DIS 4210-2:2021)

Cycles - Exigences de sécurité des bicyclettes - Partie 2 : Exigences pour bicyclettes de

ville et tout chemin (trekking), jeunes adultes, tout terrain et de course (ISO/DIS 4210-

2:2021)
Ta slovenski standard je istoveten z: prEN ISO 4210-2
ICS:
43.150 Kolesa Cycles
97.220.40 Oprema za športe na Outdoor and water sports
prostem in vodne športe equipment
oSIST prEN ISO 4210-2:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 4210-2:2022
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oSIST prEN ISO 4210-2:2022
DRAFT INTERNATIONAL STANDARD
ISO/DIS 4210-2
ISO/TC 149/SC 1 Secretariat: JISC
Voting begins on: Voting terminates on:
2021-11-05 2022-01-28
Cycles — Safety requirements for bicycles —
Part 2:
Requirements for city and trekking, young adult, mountain
and racing bicycles
Cycles — Exigences de sécurité des bicyclettes —

Partie 2: Exigences pour bicyclettes de ville et tout chemin (trekking), jeunes adultes, tout terrain et de

course
ICS: 43.150
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 4210-2:2021(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2021
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oSIST prEN ISO 4210-2:2022
ISO/DIS 4210-2:2021(E)
ISO/DIS 4210-2:2021(E)
Contents

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Foreword ................................................................................................................................................................ vi

Introduction ........................................................................................................................................................ vii

1 Scope ................................................................................................................................................................. 1

2 Normative references ................................................................................................................................. 2

3 Terms and definitions ................................................................................................................................ 2

4 Requirements ................................................................................................................................................ 2

4.1 Toxicity ............................................................................................................................................................ 2

4.2 Sharp edges .................................................................................................................................................... 3

4.3 Security and strength of safety-related fasteners ............................................................................ 3

4.3.1 Security of screws .................................................................................................................................. 3

4.3.2 Minimum failure torque ...................................................................................................................... 3

4.3.3 Folding bicycle mechanism ................................................................................................................ 3

4.4 Crack detection methods........................................................................................................................... 3

4.5 Protrusions .................................................................................................................................................... 3

4.6 Brakes .............................................................................................................................................................. 3

4.6.1 Braking systems ..................................................................................................................................... 3

4.6.2 Hand-operated brakes ......................................................................................................................... 4

4.6.3 Attachment of brake assembly and cable requirements ........................................................ 5

4.6.4 Brake-block and brake-pad assemblies — Security test ......................................................... 5

4.6.5 Brake adjustment .................................................................................................................................. 6

4.6.6 Hand-operated braking-system — Strength test ....................................................................... 6

4.6.7 Back-pedal braking system — Strength test ................................................................................ 6

4.6.8 Braking performance ........................................................................................................................... 6

4.6.9 Brakes — Heat-resistance test .......................................................................................................... 9

4.7 Steering ............................................................................................................................................................ 9

4.7.1 Handlebar — Dimensions ................................................................................................................... 9

4.7.2 Handlebar grips and plugs .............................................................................................................. 10

4.7.3 Handlebar stem — Insertion-depth mark or positive stop ................................................. 10

4.7.4 Handlebar stem to fork steerer — Clamping requirements ............................................... 10

4.7.5 Steering stability ................................................................................................................................. 11

4.7.6 Steering assembly — Static strength and security tests ....................................................... 11

4.7.7 Handlebar and stem assembly — Fatigue test ........................................................................ 13

4.8 Frames .......................................................................................................................................................... 13

COPYRIGHT PROTECTED DOCUMENT

4.8.1 Suspension-frames — Special requirements............................................................................ 13

© ISO 2021

4.8.2 Frame — Impact test (falling mass) ............................................................................................. 13

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

4.8.3 Frame and front fork assembly — Impact test (falling frame) .......................................... 13

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address 4.8.4 Frame — Fatigue test with pedalling forces ............................................................................. 14

below or ISO’s member body in the country of the requester.

4.8.5 Frame — Fatigue test with horizontal forces .......................................................................... 14

ISO copyright office

4.8.6 Frame — Fatigue test with a vertical force ................................................................................ 14

CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva

4.9 Front fork ..................................................................................................................................................... 14

Phone: [phone]

4.9.1 General ................................................................................................................................................... 14

Fax: [phone]

4.9.2 Means of location of the axle and wheel retention ................................................................. 14

Email: [e-mail]
Website: www.iso.org

4.9.3 Tyre clearance test — Suspension fork ...................................................................................... 14

Published in Switzerland

4.9.4 Front fork — Tensile test ................................................................................................................. 14

4.9.5 Front fork — Static bending test ................................................................................................... 15

ii © ISO 2021 – All rights reserved
© ISO 2021 – All rights reserved iii
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oSIST prEN ISO 4210-2:2022
ISO/DIS 4210-2:2021(E)
Contents

This template allows you to work with default MS Word functions and styles. You can use these if you want

to maintain the Table of Contents automatically and apply auto-numbering.
To update the Table of Contents please select it and press "F9".

Foreword ................................................................................................................................................................vi

Introduction ........................................................................................................................................................ vii

1 Scope ................................................................................................................................................................. 1

2 Normative references ................................................................................................................................. 2

3 Terms and definitions ................................................................................................................................ 2

4 Requirements ................................................................................................................................................ 2

4.1 Toxicity ............................................................................................................................................................ 2

4.2 Sharp edges .................................................................................................................................................... 3

4.3 Security and strength of safety-related fasteners ............................................................................ 3

4.3.1 Security of screws .................................................................................................................................. 3

4.3.2 Minimum failure torque ...................................................................................................................... 3

4.3.3 Folding bicycle mechanism ................................................................................................................ 3

4.4 Crack detection methods .......................................................................................................................... 3

4.5 Protrusions .................................................................................................................................................... 3

4.6 Brakes .............................................................................................................................................................. 3

4.6.1 Braking systems ..................................................................................................................................... 3

4.6.2 Hand-operated brakes ......................................................................................................................... 4

4.6.3 Attachment of brake assembly and cable requirements ........................................................ 5

4.6.4 Brake-block and brake-pad assemblies — Security test ......................................................... 5

4.6.5 Brake adjustment .................................................................................................................................. 6

4.6.6 Hand-operated braking-system — Strength test ....................................................................... 6

4.6.7 Back-pedal braking system — Strength test ................................................................................ 6

4.6.8 Braking performance ........................................................................................................................... 6

4.6.9 Brakes — Heat-resistance test .......................................................................................................... 9

4.7 Steering ............................................................................................................................................................ 9

4.7.1 Handlebar — Dimensions ................................................................................................................... 9

4.7.2 Handlebar grips and plugs .............................................................................................................. 10

4.7.3 Handlebar stem — Insertion-depth mark or positive stop ................................................. 10

4.7.4 Handlebar stem to fork steerer — Clamping requirements ............................................... 10

4.7.5 Steering stability ................................................................................................................................. 11

4.7.6 Steering assembly — Static strength and security tests ....................................................... 11

4.7.7 Handlebar and stem assembly — Fatigue test ........................................................................ 13

4.8 Frames .......................................................................................................................................................... 13

4.8.1 Suspension-frames — Special requirements ............................................................................ 13

4.8.2 Frame — Impact test (falling mass) ............................................................................................. 13

4.8.3 Frame and front fork assembly — Impact test (falling frame) .......................................... 13

4.8.4 Frame — Fatigue test with pedalling forces ............................................................................. 14

4.8.5 Frame — Fatigue test with horizontal forces .......................................................................... 14

4.8.6 Frame — Fatigue test with a vertical force ................................................................................ 14

4.9 Front fork ..................................................................................................................................................... 14

4.9.1 General ................................................................................................................................................... 14

4.9.2 Means of location of the axle and wheel retention ................................................................. 14

4.9.3 Tyre clearance test — Suspension fork ...................................................................................... 14

4.9.4 Front fork — Tensile test ................................................................................................................. 14

4.9.5 Front fork — Static bending test ................................................................................................... 15

© ISO 2021 – All rights reserved iii
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oSIST prEN ISO 4210-2:2022
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4.9.6 Front fork — Rearward impact test .............................................................................................15

4.9.7 Front fork — Bending fatigue test plus rearward impact test ............................................15

4.9.8 Forks intended for use with hub- or disc-brakes ....................................................................15

4.9.9 Steerer tube — fatigue test ..............................................................................................................16

4.10 Wheels and wheel/tyre assembly .................................................................................................16

4.10.1 Wheels/tyre assembly — Rotational accuracy — Concentricity tolerance and lateral

tolerance.................................................................................................................................................16

4.10.2 Wheel/tyre assembly — Clearance...............................................................................................16

4.10.3 Wheel/tyre assembly — Static strength test .............................................................................16

4.10.4 Wheels — Wheel retention ..............................................................................................................17

4.10.5 Wheels — Quick-release devices — Operating features .......................................................17

4.10.6 Heat resistance tests for composite rims used in conjunction with rim brake ............18

4.11 Rims, tyres, and tubes ........................................................................................................................18

4.11.1 General ....................................................................................................................................................18

4.11.2 Tyre inflation pressure .....................................................................................................................18

4.11.3 Combined tyre and wheel overpressure test ............................................................................18

4.11.4 Tubular tyres and rims .....................................................................................................................19

4.11.5 Rim-wear ................................................................................................................................................19

4.11.6 Greenhouse effect test for composite wheels ...........................................................................19

4.12 Front mudguard ...................................................................................................................................19

4.13 Pedals and pedal/crank drive system .........................................................................................19

4.13.1 Pedal tread ............................................................................................................................................19

4.13.2 Pedal clearance ....................................................................................................................................20

4.13.3 Pedal — Static strength test ............................................................................................................21

4.13.4 Pedal — Impact test ............................................................................................................................21

4.13.5 Pedal — Dynamic durability test ...................................................................................................21

4.13.6 Drive system — Static strength test..............................................................................................21

4.13.7 Crank assembly — Fatigue test ......................................................................................................22

4.14 Drive-chain and drive belt ...............................................................................................................22

4.14.1 Drive-chain ............................................................................................................................................22

4.14.2 Drive belt ................................................................................................................................................22

4.15 Chain-wheel and belt-drive protective device ..........................................................................22

4.15.1 Requirements .......................................................................................................................................22

4.15.2 Chain-wheel disc and drive pulley disc diameter ....................................................................22

4.15.3 Chain and drive belt protective device ........................................................................................23

4.15.4 Combined front gear-change guide ..............................................................................................24

4.16 Saddles and seat-posts ......................................................................................................................25

4.16.1 Limiting dimensions ..........................................................................................................................25

4.16.2 Seat-post — Insertion-depth mark or positive stop ...............................................................25

4.16.3 Saddle/seat-post — Security test ..................................................................................................25

4.16.4 Saddle and saddle rail — Static strength test............................................................................26

4.16.5 Saddle and seat-post assembly — Fatigue test .........................................................................26

4.16.6 Seat-post — Fatigue test ...................................................................................................................26

4.17 Spoke protector ...................................................................................................................................26

4.18 Luggage carriers ..................................................................................................................................26

4.19 Road test of a fully assembled bicycle .........................................................................................27

4.20 Lighting systems and reflectors .....................................................................................................27

4.20.1 General ....................................................................................................................................................27

4.20.2 Wiring harness .....................................................................................................................................27

4.20.3 Lighting systems ..................................................................................................................................27

4.20.4 Reflectors ...............................................................................................................................................27

4.21 Warning device ....................................................................................................................................28

5 Manufacturer's instructions ..................................................................................................................28

iv © ISO 2021 – All rights reserved
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6 Marking ........................................................................................................................................................ 29

6.1 Requirement ............................................................................................................................................... 29

6.2 Durability test ............................................................................................................................................ 30

Annex A (informative) Steering geometry .............................................................................................. 31

Bibliography ....................................................................................................................................................... 32

© ISO 2021 – All rights reserved v
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oSIST prEN ISO 4210-2:2022
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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 documents 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).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any

patent rights identified during the development of the document will be in the Introduction and/or on

the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

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 third edition cancels and replaces the second edition (ISO 4210-2:2015), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— xxx xxxxxxx xxx xxxx
A list of all parts in the ISO 4210 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.
vi © ISO 2021 – All rights reserved
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oSIST prEN ISO 4210-2:2022
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Introduction

This International Standard has been developed in response to demand throughout the world, and the

aim has been to ensure that bicycles manufactured in compliance with this International Standard will

be as safe as is practically possible. The tests have been designed to ensure the strength and durability of

individual parts as well as of the bicycle as a whole, demanding high quality throughout and consideration

of safety aspects from the design stage onwards.

The scope has been limited to safety considerations and has specifically avoided standardization of

components.
If the bicycle is to be used on public roads, national regulations apply.
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oSIST prEN ISO 4210-2:2022
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oSIST prEN ISO 4210-2:2022
DRAFT INTERNATIONAL STANDARD ISO/DIS 4210-2:2021(E)
1 Cycles — Safety requirements for bicycles — Part 2: Requirements
2 for city and trekking, young adult, mountain and racing bicycles
3 1 Scope

4 This part of ISO 4210 specifies safety and performance requirements for the design, assembly, and testing

5 of bicycles and sub-assemblies having saddle height as given in Table 1, and lays down guideline

...