ISO 4254-1:2013/Amd 1:2021
(Amendment)Agricultural machinery — Safety — Part 1: General requirements — Amendment 1
Agricultural machinery — Safety — Part 1: General requirements — Amendment 1
Matériel agricole — Sécurité — Partie 1: Exigences générales — Amendement 1
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INTERNATIONAL ISO
STANDARD 4254-1
Fifth edition
2013-05-01
AMENDMENT 1
2021-07
Agricultural machinery — Safety —
Part 1:
General requirements
AMENDMENT 1
Matériel agricole — Sécurité —
Partie 1: Exigences générales
AMENDEMENT 1
Reference number
ISO 4254-1:2013/Amd.1:2021(E)
©
ISO 2021
---------------------- Page: 1 ----------------------
ISO 4254-1:2013/Amd.1:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 4254-1:2013/Amd.1:2021(E)
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 23, Tractors and machinery for agriculture
and forestry, Subcommittee SC 3, Safety and comfort, in collaboration with CEN/TC 144, Tractors and
machinery for agriculture and forestry, in accordance with the agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 4254 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.
© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 4254-1:2013/Amd.1:2021(E)
Agricultural machinery — Safety —
Part 1:
General requirements
AMENDMENT 1
Scope
Add a bullet and NOTE to the third paragraph:
— machine-specific performance levels (PL or AgPL).
NOTE Machine-specific standards can give the required PL or AgPL.
Normative references
Update the reference to ISO 3600 by replacing "1996" with "2015".
Update the reference to ISO 13849-1 by replacing "2006" with "2015".
Update the reference to ISO 13850 by replacing "2006" with "2015".
Add the following reference:
ISO 9533:2010, Earth-moving machinery — Machine-mounted audible travel alarms and forward horns —
Test methods and performance criteria
3.3
Modify 3.3 to read:
3.3
three-point contact
system which permits a person to simultaneously use two hands and a foot or two feet and one hand to
keep contact with the machine
4.7.1.2
Modify 4.7.1.2.1 to read:
4.7.1.2.1 The height of the first step shall not exceed 550 mm when measured with the specified tyres
and with the maximum diameter at specified inflation pressure [see 8.2.3 w)]. The vertical distance
between successive steps shall be equal within a tolerance of ± 20 mm. Each step shall have a slip-
resistant surface, a lateral stop at each end and be so designed (for example mudguards, perforated
steps) that an accumulation of mud and/or snow is minimized under normal work conditions.
A flexible connection(s) between the first and second steps is permitted.
© ISO 2021 – All rights reserved 1
---------------------- Page: 4 ----------------------
ISO 4254-1:2013/Amd.1:2021(E)
Figure 3
Replace Figure 3 with the following:
Key
A toe clearance
B vertical distance between tread surface of successive steps
C minimum clearance between successive steps
D tread depth
E height of the first step
G horizontal distance between leading edge of successive steps
W width of step or rung
α angle of inclination
Figure 3 — Dimensions of boarding means for operator stations
Table 1
Replace Table 1 with the following:
Table 1 — Dimensions for boarding means for operator stations
Dimensions in millimetres
Ladders Steps
α 70° to 90° 20° to 70°
A + D min 150 150
B max 300 300
C min 120 120
D min 50 150
E max 550 550
2B + G max — 800
W min 300 300
2 © ISO 2021 – All rights reserved
---------------------- Page: 5 ----------------------
ISO 4254-1:2013/Amd.1:2021(E)
4.8
Replace 4.8.2.1 with the following:
4.8.2.1 A place provided for standing shall have sufficient space for both of the operator’s feet with
a minimum of 300 mm width, be flat and have a slip-resistant surface. Depending on the machine
configuration, it may consist of two separate surfaces and may use machine components. In case of
separate surfaces, each surface shall be a minimum of 150 mm width and on the same height level with
a tolerance of ±50 mm. It shall be positioned so the operator can maintain stability while carrying out
the service required.
Add a new subclause:
4.8.4 Walkways
Walkways shall be a minimum of 300 mm width. It is allowable for the width to reduce to 250 mm
for short
...
NORME ISO
INTERNATIONALE 4254-1
Cinquième édition
2013-05-01
AMENDEMENT 1
2021-07
Matériel agricole — Sécurité —
Partie 1:
Exigences générales
AMENDEMENT 1
Agricultural machinery — Safety —
Part 1: General requirements
AMENDMENT 1
Numéro de référence
ISO 4254-1:2013/Amd.1:2021(F)
©
ISO 2021
---------------------- Page: 1 ----------------------
ISO 4254-1:2013/Amd.1:2021(F)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2021
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii © ISO 2021 – Tous droits réservés
---------------------- Page: 2 ----------------------
ISO 4254-1:2013/Amd.1:2021(F)
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes
nationaux de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est
en général confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l'ISO participent également aux travaux.
L'ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document a été
rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir www
.iso .org/ directives).
L'attention est attirée sur le fait que certains des éléments du présent document peuvent faire l'objet de
droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant
les références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de
l'élaboration du document sont indiqués dans l'Introduction et/ou dans la liste des déclarations de
brevets reçues par l'ISO (voir www .iso .org/ brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données
pour information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un
engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion
de l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles
techniques au commerce (OTC), voir www .iso .org/ avant -propos.
Le présent document a été élaboré par le comité technique ISO/TC 23, Tracteurs et matériels agricoles
et forestiers, sous-comité SC 3, Sécurité et confort, en collaboration avec le CEN/TC 144, Tracteurs et
matériels agricoles et forestiers, conformément à l'accord de coopération technique entre l'ISO et le CEN
(Accord de Vienne).
Une liste de toutes les parties de la série ISO 4254 se trouve sur le site web de l’ISO.
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes
se trouve à l’adresse www .iso .org/ fr/ members .html.
© ISO 2021 – Tous droits réservés iii
---------------------- Page: 3 ----------------------
ISO 4254-1:2013/Amd.1:2021(F)
Matériel agricole — Sécurité —
Partie 1:
Exigences générales
AMENDEMENT 1
Domaine d’application
Ajouter un point et la NOTE au troisième paragraphe:
— les niveaux de performance spécifiques aux machines (PL ou AgPL).
NOTE Les normes spécifiques aux machines peuvent donner le PL ou l'AgPL requis.
Références normatives
Mettre à jour la référence à l’ISO 3600 en remplaçant “1996” par “2015”.
Mettre à jour la référence à l'ISO 13849-1 en remplaçant “2006” par “2015”.
Mettre à jour la référence à l'ISO 13850 en remplaçant “2006” par “2015”.
Ajouter la référence suivante:
ISO 9533:2010, Engins de terrassement — Avertisseurs sonores de déplacement et de recul montés sur
engins – Méthodes d’essai et critères de performance
3.3
Modifier 3.3 pour lire:
3.3
contact trois points
système qui permet à une personne d'utiliser simultanément deux mains et un pied ou deux pieds et
une main pour rester en contact avec la machine
4.7.1.2
Modifier 4.7.1.2.1 pour lire:
4.7.1.2.1 La hauteur de la première marche ne doit pas dépasser 550 mm lorsqu’elle est mesurée
par rapport aux pneumatiques spécifiés, à diamètre maximal et à pression de gonflage spécifiée
[voir 8.2.3 w)]. La hauteur entre marches successives doit être la même avec une tolérance de ± 20 mm.
Chaque marche doit avoir une surface antidérapante, comporter une butée latérale de chaque côté et
être conçue (par exemple, garde-boue, caillebotis) de manière à réduire au minimum l’accumulation de
boue et/ou de neige dans les conditions normales de travail.
Une ou plusieurs liaisons souples entre la première et la seconde marche sont autorisées.
© ISO 2021 – Tous droits réservés 1
---------------------- Page: 4 ----------------------
ISO 4254-1:2013/Amd.1:2021(F)
Figure 3
Remplacer la Figure 3 par ce qui suit:
Légende
A dégagement pour les orteils
B hauteur de marche (distance verticale entre les girons de marches successives)
C contremarche (hauteur libre minimale entre des marches successives)
D profondeur de marche
E hauteur de la première marche
G giron (distance horizontale entre les nez de marches successives)
W emmarchement (largeur de marche ou d’échelon)
α angle d'inclinaison
Figure 3 — Dimensions des moyens d'accès au poste de l'opérateur
Tableau 1
Remplacer le Tableau 1 par ce qui suit:
Table 1 — Dimensions des moyens d'accès au poste de l'opérateur
Dimensions en millimetres
Échelles Marches
α 70° à 90° 20° à 70°
A + D min 150 150
B max 300 300
C min 120 120
D min 50 150
E max 550 550
2B + G max — 800
W min 300 300
2 © ISO 2021 – Tous droits réservés
---------------------- Page: 5 ----------------------
ISO 4254-1:2013/Amd.1:2021(F)
4.8
Remplacer 4.8.2.1 par ce qui suit:
4.8.2.1 Un emplacement pour se tenir debout doit avoir un espace suffisant pour les deux pieds de
l'opérateur avec une largeur minimale de 300 mm, être plat et présenter une surface antidérapante. En
fonction de la configuration de la machine, il peut s’agir de deux surfaces séparées ou de composants de
la machine. En cas de surfaces séparées, chaque surface doit avoir une largeur minimale de 150 mm et
de même niveau, avec une tolérance de ±50 mm. Il doit être placé de sorte que l’opérateur puisse rester
stable pendant les opérations d’entretien requises.
Ajouter un nouveau paragraphe:
4.8.4 Passerelles
Les passerelles doivent avoir une largeur minimale de 300 mm. Il est admis de réduire la largeur à
250 mm pour les courtes distances (par exemple, pour une longueur de pas) afin de recevoir des
éléments de soutien de la main courante ou des composants de la machine. L'opérateur doit pouvoir
passer en sécurité sur toute la longueur de la passerelle.
4.19
Modifier le dernier alinéa en supprimant l'année de publication pour que la
...
FINAL
ISO
AMENDMENT
DRAFT
4254-1.2:2013
FDAM 1
ISO/TC 23/SC 3
Agricultural machinery — Safety —
Secretariat: DIN
Voting begins on:
Part 1:
2021-04-12
General requirements
Voting terminates on:
2021-06-07
AMENDMENT 1
Matériel agricole — Sécurité —
Partie 1: Exigences générales
AMENDEMENT 1
ISO/CEN PARALLEL PROCESSING
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 SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO 4254-1.2:2013/FDAM 1:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
©
NATIONAL REGULATIONS. ISO 2021
---------------------- Page: 1 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
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 23, Tractors and machinery for agriculture
and forestry, Subcommittee SC 3, Safety and comfort, in collaboration with CEN/TC 144, Tractors and
machinery for agriculture and forestry, in accordance with the agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 4254 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.
© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
Agricultural machinery — Safety —
Part 1:
General requirements
AMENDMENT 1
Scope
Add a bullet and NOTE to the third paragraph:
— machine-specific performance levels (PL or AgPL).
NOTE Machine-specific standards can give the required PL or AgPL.
Normative references
Update the reference to ISO 3600 by replacing "1996" with "2015".
Update the reference to ISO 13849-1 by replacing "2006" with "2015".
Update the reference to ISO 13850 by replacing "2006" with "2015".
Add the following reference:
ISO 9533:2010, Earth-moving machinery — Machine-mounted audible travel alarms and forward horns —
Test methods and performance criteria
3.3
Modify 3.3 to read:
3.3
three-point contact
system which permits a person to simultaneously use two hands and a foot or two feet and one hand to
keep contact with the machine
4.7.1.2
Modify 4.7.1.2.1 to read:
4.7.1.2.1 The height of the first step shall not exceed 550 mm when measured with the specified tyres
and with the maximum diameter at specified inflation pressure [see 8.2.3 w)]. The vertical distance
between successive steps shall be equal within a tolerance of ± 20 mm. Each step shall have a slip-
resistant surface, a lateral stop at each end and be so designed (for example mudguards, perforated
steps) that an accumulation of mud and/or snow is minimized under normal work conditions.
A flexible connection(s) between the first and second steps is permitted.
© ISO 2021 – All rights reserved 1
---------------------- Page: 4 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
Figure 3
Replace Figure 3 with the following:
Key
A toe clearance
B vertical distance between tread surface of successive steps
C minimum clearance between successive steps
D tread depth
E height of the first step
G horizontal distance between leading edge of successive steps
W width of step or rung
α angle of inclination
Figure 3 — Dimensions of boarding means for operator stations
Table 1
Replace Table 1 with the following:
Table 1 — Dimensions for boarding means for operator stations
Dimensions in millimetres
Ladders Steps
α 70° to 90° 20° to 70°
A + D min 150 150
B max 300 300
C min 120 120
D min 50 150
E max 550 550
2B + G max — 800
W min 300 300
2 © ISO 2021 – All rights reserved
---------------------- Page: 5 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
4.8
Replace 4.8.2.1 with the following:
4.8.2.1 A place provided for standing shall have sufficient space for both of the operator’s feet with
a minimum of 300 mm width, be flat and have a slip-resistant surface. Depending on the machine
configuration, it may consist of two separate surfaces and may use machine components. In case of
separate surfaces, each surface shall be a minimum of 150 mm width and on the same height level with
a tolerance of ±50 mm. It shall be positioned so the operator can maintain stability while carrying out
the service required.
Add a new subclause:
4.8.4 Walkways
Walkways shall be a minimum of 300 mm width. It is allowable for the width to reduce to 250 mm
for short distances (e.g. for one step length) to accommodate handrail support members or machine
components. The operator shall be able to safely pass along the full length of the walkway.
4.19
Modify the last para by deleting the year of publication so that ISO 13850 becomes an undated reference.
Modify the NOTE to read:
NOTE Requirements for wireless remote control devices that require emergency stop devices of
ISO 13850:2015 can be given in relevant machine-specific standards.
4.20
Replace 4.20 with the following:
Safety-related parts of control systems shall be in accordance with ISO 25119-1 to ISO 25119-4 or
ISO 13849-1 and ISO 13849-2.
NOTE Annex E provides guidance for risk assessment and determination of performance levels.
© ISO 2021 – All rights reserved 3
---------------------- Page: 6 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
5.1.8.1
Modify 5.1.8.1 to read:
5.1.8.1 To avoid unauthorized activation of the engine starting, means such as the following shall be
provided:
— key-operated ignition or starting switch;
— lockable cab;
— lockable cover for the ignition or starting switch;
— security ignition or starting lock;
— lockable battery disconnecting switch.
Information to avoid unauthorized starting shall be provided in the operator’s manual [see 8.2.3 f)].
6.4
Add the following NOTE at the end of 6.4.1:
NOTE It is intended to move the specifications of 6.4.1 into another standard in the future (for example
ISO 5673-1).
8.2
Modify 8.2.3 b) to read
b) compatibility with the tractor’s, for example hitching system, PTO drive shaft, vertical load
at hitching point, engine power, stability (see 6.3.1, 6.3.2, 6.4.1), including instructions when
replacement of the drive shaft and/or PIC guard are needed these should be clear, concise, and
maintain the safety level of the elements that are replaced. When applicable, the information shall
include:
— type of connections on the PTO side;
— type of connections on the PIC side;
— maximum allowed diameter of the guards for compatibility with the PIC guard;
— type of allowed locking system(s);
— type and setting of overload protection device;
— power and speed to be transmitted;
— PTO drive shaft length and procedure to adapt the length.
Add the following to 8.2.3:
z) information on the use of the PTO-drive-shaft for PTO-driven equipment, such as:
— information about the interaction between PTO-drive-shaft guarding and PIC guard;
— information, if necessary, on how to attach the restraining system;
4 © ISO 2021 – All rights reserved
---------------------- Page: 7 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
— the need to and how to use a support for the PTO drive shaft when it is not in use, that is
different from the restraining system and which does not cause such damage to the guard that
the telescoping of the inner and outer tubes is prevented.
Annex E
Add a new Annex E:
ANNEX E
(informative)
Guidance for risk assessment and determination of performance levels for safety-related parts
of control systems
E.1 Risk assessment was used to determine the requirements of
...
FINAL
ISO
AMENDMENT
DRAFT
4254-1.2:2013
FDAM 1
ISO/TC 23/SC 3
Agricultural machinery — Safety —
Secretariat: DIN
Voting begins on:
Part 1:
2021-01-28
General requirements
Voting terminates on:
2021-03-25
AMENDMENT 1
Matériel agricole — Sécurité —
Partie 1: Exigences générales
AMENDEMENT 1
ISO/CEN PARALLEL PROCESSING
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 SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO 4254-1.2:2013/FDAM 1:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
©
NATIONAL REGULATIONS. ISO 2021
---------------------- Page: 1 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
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 23, Tractors and machinery for agriculture
and forestry, Subcommittee SC 3, Safety and comfort, in collaboration with CEN/TC 144, Tractors and
machinery for agriculture and forestry, in accordance with the agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 4254 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.
© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
Agricultural machinery — Safety —
Part 1:
General requirements
AMENDMENT 1
Scope
Add a bullet and NOTE to the third paragraph:
— machine-specific performance levels (PL or AgPL).
NOTE Machine-specific standards can give the required PL or AgPL.
Normative references
Update the reference to ISO 3600 by replacing "1996" with "2015".
Update the reference to ISO 13849-1 by replacing "2006" with "2015".
Update the reference to ISO 13850 by replacing "2006" with "2015".
Add the following reference:
ISO 9533:2010, Earth-moving machinery — Machine-mounted audible travel alarms and forward horns —
Test methods and performance criteria
3.3
Modify 3.3 to read:
3.3
three-point contact
system which permits a person to simultaneously use two hands and a foot or two feet and one hand to
keep contact with the machine
4.7.1.2
Modify 4.7.1.2.1 to read:
4.7.1.2.1 The height of the first step shall not exceed 550 mm when measured with the specified tyres
and with the maximum diameter at specified inflation pressure [see 8.2.3 w)]. The vertical distance
between successive steps shall be equal within a tolerance of ± 20 mm. Each step shall have a slip-
resistant surface, a lateral stop at each end and be so designed (for example mudguards, perforated
steps) that an accumulation of mud and/or snow is minimized under normal work conditions.
A flexible connection(s) between the first and second steps is permitted.
© ISO 2021 – All rights reserved 1
---------------------- Page: 4 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
Figure 3
Add a new key "E" to Figure 3.
Add "E Height of first step" to the key table.
Table 1
Add the dimension of 550 mm for both ladders and steps to Table 1.
4.8
Replace 4.8.2.1 with the following:
4.8.2.1 A place provided for standing shall have sufficient space for both of the operator’s feet with
a minimum of 300 mm width, be flat and have a slip-resistant surface. Depending on the machine
configuration, it may consist of two separate surfaces and may use machine components. In case of
separate surfaces, each surface shall be a minimum of 150 mm width and on the same height level with
a tolerance of ±50 mm. It shall be positioned so the operator can maintain stability while carrying out
the service required.
Add a new subclause:
4.8.4 Walkways
Walkways shall be a minimum of 300 mm width. It is allowable for the width to reduce to 250 mm
for short distances (e.g. for one step length) to accommodate handrail support members or machine
components. The operator shall be able to safely pass along the full length of the walkway.
4.19
Modify the last para by deleting the year of publication that ISO 13850 becomes an undated reference.
Modify the NOTE to read:
NOTE Requirements for wireless remote control devices that require emergency stop devices of
ISO 13850:2015 can be given in relevant machine-specific standards.
4.20
Replace 4.20 with the following:
Safety-related parts of control systems shall be in accordance with ISO 25119-1 to ISO 25119-4 or
ISO 13849-1 and ISO 13849-2.
NOTE Annex E provides guidance for risk assessment and determination of performance levels.
2 © ISO 2021 – All rights reserved
---------------------- Page: 5 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
5.1.8.1
Modify 5.1.8.1 to read:
5.1.8.1 To avoid unauthorized activation of the engine starting, means such as the following shall be
provided:
— key-operated ignition or starting switch;
— lockable cab;
— lockable cover for the ignition or starting switch;
— security ignition or starting lock;
— lockable battery disconnecting switch.
Information to avoid unauthorized starting shall be provided in the operator’s manual [see 8.2.3 f)].
6.4
Add the following NOTE at the end of 6.4.1:
NOTE It is intended to move the specifications of 6.4.1 into another standard in the future (for example
ISO 5673-1).
8.2
Modify 8.2.3 b) to read
b) compatibility with the tractor’s, for example hitching system, PTO drive shaft, vertical load
at hitching point, engine power, stability (see 6.3.1, 6.3.2, 6.4.1), including instructions when
replacement of the drive shaft and/or PIC guard are needed these should be clear, concise, and
maintain the safety level of the elements that are replaced. When applicable, the information shall
include:
— type of connections on the PTO side;
— type of connections on the PIC side;
— maximum allowed diameter of the guards for compatibility with the PIC guard;
— type of allowed locking system(s);
— type and setting of overload protection device;
— power and speed to be transmitted;
— PTO drive shaft length and procedure to adapt the length.
Add the following to 8.2.3:
z) information on the use of the PTO-drive-shaft for PTO-driven equipment, such as:
— information about the interaction between PTO-drive-shaft guarding and PIC guard;
— information, if necessary, on how to attach the restraining system;
© ISO 2021 – All rights reserved 3
---------------------- Page: 6 ----------------------
ISO 4254-1.2:2013/FDAM 1:2021(E)
— the need to and how to use a support for the PTO drive shaft when it is not in use, that is
different from the restraining system and which does not cause such damage to the guard that
the telescoping of the inner and outer tubes is prevented.
Annex E
Add a new Annex E:
ANNEX E
(informative)
Guidance for risk assessment and determination of performance levels for safety-related parts
of control systems
E.1 Risk assessment was used to determine the requirements of ISO 4254-1 and the requirements of
associated machine specific type-C standards. This annex provides some basic guidance for the use of
risk assessment when determining requirements either of related machine specific standards or for
hazards not covered by those documents, includ
...
FINAL
ISO
AMENDMENT
DRAFT
4254-1:2013
FDAM 1
ISO/TC 23/SC 3
Agricultural machinery — Safety —
Secretariat: DIN
Voting begins on:
Part 1:
2020-03-04
General requirements
Voting terminates on:
2020-04-29
AMENDMENT 1
Matériel agricole — Sécurité —
Partie 1: Exigences générales
AMENDEMENT 1
ISO/CEN PARALLEL PROCESSING
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 SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO 4254-1:2013/FDAM 1:2020(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
©
NATIONAL REGULATIONS. ISO 2020
---------------------- Page: 1 ----------------------
ISO 4254-1:2013/FDAM 1:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 4254-1:2013/FDAM 1:2020(E)
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 23, Tractors and machinery for agriculture
and forestry, Subcommittee SC 3, Safety and comfort, in collaboration with CEN/TC 144, Tractors and
machinery for agriculture and forestry, in accordance with the agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 4254 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.
© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 4254-1:2013/FDAM 1:2020(E)
Agricultural machinery — Safety —
Part 1:
General requirements
AMENDMENT 1
Scope
Add a bullet and NOTE to the third paragraph:
— machine-specific performance levels (PL or AgPL).
NOTE Machine-specific standards can give the required PL or AgPL.
Normative references
Update the reference to ISO 3600 by deleting the year of edition.
Add the following reference:
ISO 9533, Earth-moving machinery — Machine-mounted audible travel alarms and forward horns — Test
methods and performance criteria
3.3
Modify 3.3 to read:
3.3
three-point contact
system which permits a person to simultaneously use two hands and a foot or two feet and one hand to
keep contact with the machine
4.7.1.2
Modify 4.7.1.2.1 to read:
4.7.1.2.1 The height of the first step shall not exceed 550 mm when measured with the specified tyres
and with the maximum diameter at specified inflation pressure [see 8.2.3 w)]. The vertical distance
between successive steps shall be equal within a tolerance of ± 20 mm. Each step shall have a slip-
resistant surface, a lateral stop at each end and be so designed (for example mudguards, perforated
steps) that an accumulation of mud and/or snow is minimized under normal work conditions.
A flexible connection(s) between the first and second steps is permitted.
© ISO 2020 – All rights reserved 1
---------------------- Page: 4 ----------------------
ISO 4254-1:2013/FDAM 1:2020(E)
Figure 3
Add a new key "E" to Figure 3.
Add "E Height of first step" to the key table.
Table 1
Add the dimension of 550 mm for both ladders and steps to Table 1.
4.8
Replace 4.8.2 with the following:
4.8.2 Place to stand
4.8.2.1 A place provided for standing shall be a minimum of 300 mm width, be flat and have a slip-
resistant surface. Depending on the machine configuration, it may consist of two separate surfaces and
may use machine components. In case of separate surfaces, each surface shall be a minimum of 150 mm
width and on the same height level with a tolerance of ± 50 mm. It shall be positioned so the operator
can maintain stability while carrying out the service required.
4.8.2.2 Handhold(s) and/or railings shall be provided in order to allow three-point contact. Parts of
the machine can be considered to fulfil this requirement.
4.8.2.3 When access is needed above or next to the PTO (power take-off) drive shaft, an adequate
place to stand and boarding means shall be provided in order to eliminate the need to use the PTO drive
shaft or its guard as a step or a place to stand.
Add a new subclause:
4.8.4 Walkways
Walkways shall be a minimum of 300 mm width. It is allowable for the width to reduce to 250 mm
for short distances to accommodate handrail support members or machine components if it does not
create additional hazards.
4.19
Modify the NOTE to read:
NOTE ISO 13850:2006 is not applicable to wireless emergency stop devices. Requirements for wireless
remote control devices that require emergency stop devices of ISO 13850:2015 can be given in relevant machine-
specific standards.
2 © ISO 2020 – All rights reserved
---------------------- Page: 5 ----------------------
ISO 4254-1:2013/FDAM 1:2020(E)
4.20
Replace 4.20 with the following:
Safety-related parts of control systems shall be in accordance with ISO 25119-1 to ISO 25119-4 or
ISO 13849-1 and ISO 13849-2.
NOTE Annex E provides guidance for risk assessment and determination of performance levels.
5.1.7
Replace 5.1.7.1 with the following:
5.1.7.1 The design and position of the operator's station shall be such that the operator has adequate
visibility direct or indirect to operate the machine and view the work area of the machine.
If during driving operation direct visibility to the area just behind the machine is not possible, an
appropriate device, or combination of devices, shall be provided, such as:
— means for indirect visibility (such as mirrors, CCTV);
— an audible reverse warning alarm which is automatically engaged when reverse drive is selected
and in accordance with ISO 9533;
— visual warning signal;
— protective device, to detect the presence of persons and stop the machinery or warn the driver.
NOTE Consider operating conditions such as regularly moving backward and forward on the farmyard.
If a cabin is provided, provisions to install devices for defrosting and demisting the front window(s)
shall be made and glare from sunshine or artificial lighting shall be minimized by adjustable shielding,
by location or other means.
5.1.8.1
Modify 5.1.8.1 to read:
5.1.8.1 To avoid unauthorized activation of the engine starting, means such as the following shall be
provided:
— key-operated ignition or starting switch;
— lockable cab;
— lockable cover for the ignition or starting switch;
— security ignition or starting lock;
— lockable battery disconnecting switch.
Information to avoid unauthorized starting shall be provided in the operator’s manual [see 8.2.3 f)].
© ISO 2020 – All rights reserved 3
---------------------- Page: 6 ----------------------
ISO 4254-1:2013/FDAM 1:2020(E)
6.4
Add the following NOTE at the end of 6.4.1:
NOTE It is intended to move the specifications of 6.4.1 into another standard in the future (for example
ISO 5673-1).
8.2
Modify 8.2.3 b) to read
b) compatibility with the tractors, for example hitching system, PTO drive shaft, vertical load
at hitching point, engine power, stability (see 6.3.1, 6.3.2, 6.4.1), including instructions where
replacement of the drive shaft and/or PIC guard are needed, to be clear, concise, and maintain the
safety level of the elements that are replaced. When applicable, the information shall include:
— type of connections on the PTO side;
— type of connections on the PIC side;
— maximum allowed diameter of the guards for compatibility with the PIC guard;
— type of allowed locking system(s);
— type and setting of overload protection device;
— power and speed to be transmitted;
— length and procedure to adapt the length;
Add the following to 8.2.3:
z) information on the use of the PTO-drive-shaft for PTO-driven equipment, such as:
— information about the interaction between PTO-drive-shaft guarding and PIC guard;
— information, if necessary, on how to attach the restraining system;
— the need to and how to use a support for the PTO drive shaft when it is not in use, that is
different from the restraining system and which does not cause such damage to the guard that
the telescoping of the inner and outer tubes is prevented.
Annex E
Add a new Annex E:
4 © ISO 2020 – All rights reserved
---------------------- Page: 7 ----------------------
ISO 4254-1:2013/FDAM 1:2020(E)
ANNEX E
(informative)
Guidance for risk assessment and determination of performance
levels for safety-related parts of control systems
E.1 Risk assessment was used to determine the requirements of ISO 4254-1 and the requirements of
associated machine specific type-C standards. This annex provides some basic guidance for the use of
risk assessment when determining requirements either of related machine specific standards or for
hazards not covered by those documents, including the required performance level for safety-related
parts of control systems. Additional requirements to deal with hazards not covered by ISO 4254-1 and
associated machine specific type-C standards are outside the scope of those standards.
Risk assessment and the allocation of required performance levels are not simple issue and should be
carried out by suitably qualified and experienced persons (see E.3). The requirements of ISO 12100
for risk assessment and ISO 13849 (all parts) or ISO 25119 (all parts) for performance levels should be
taken into account as they provide a more detailed approach.
The specification and verification of the performance level should cover the whole of the safety-related
control system from input sensors to final switching devices (e.g. to stop hazardous motion).
E.2 To achieve optimum results, the machine design accompanying risk assessment and the
determination of the required performance level are considered in parallel. This is due to the
interdependence of the machine's safety concept (for example inherently safe design, protective
measures, etc.) with the determination of the requi
...
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