SIST EN ISO 3691-6:2022

SLOVENSKI STANDARD
01-februar-2022
Nadomešča:
SIST EN ISO 3691-6:2016
SIST EN ISO 3691-6:2016/AC:2016
Vozila za talni transport - Varnostne zahteve in preverjanje - 6. del: Tovorni in
osebni vozički (ISO 3691-6:2021)
Industrial trucks - Safety requirements and verification - Part 6: Burden and personnel
carriers (ISO 3691-6:2021)
Flurförderzeuge - Sicherheitstechnische Anforderungen und Verifizierung - Teil 6:
Lasten- und Personentransportfahrzeuge (ISO 3691-6:2021)
Chariots de manutention - Exigences de sécurité et vérification - Partie 6: Transporteurs
de charges et de personnel (ISO 3691-6:2021)
Ta slovenski standard je istoveten z: EN ISO 3691-6:2021
ICS:
53.060 Industrijski tovornjaki Industrial trucks
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 3691-6
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2021
EUROPÄISCHE NORM
ICS 53.060; C Supersedes EN ISO 3691-6:2015, EN ISO 3691-
6:2015/AC:2016
English Version
Industrial trucks - Safety requirements and verification -
Part 6: Burden and personnel carriers (ISO 3691-6:2021)
Chariots de manutention - Exigences de sécurité et Flurförderzeuge - Sicherheitstechnische
vérification - Partie 6: Transporteurs de charges et de Anforderungen und Verifizierung - Teil 6: Lasten- und
personnel (ISO 3691-6:2021) Personentransportfahrzeuge (ISO 3691-6:2021)
This European Standard was approved by CEN on 11 August 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3691-6:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 4

European foreword
This document (EN ISO 3691-6:2021) has been prepared by Technical Committee ISO/TC 110
"Industrial trucks" in collaboration with Technical Committee CEN/TC 150 “Industrial Trucks - Safety”
the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2022, and conflicting national standards shall be
withdrawn at the latest by April 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 3691-6:2015 and EN ISO 3691-6:2015/AC:2016.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For the relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral
part of this document.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 3691-6:2021 has been approved by CEN as EN ISO 3691-6:2021 without any
modification.
Annex ZA
(informative)
Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered
This European Standard has been prepared under a Commission’s standardization request “M/396
Mandate to CEN and CENELEC for Standardisation in the field of machinery" to provide one voluntary
means of conforming to essential requirements of Directive 2006/42/EC of the European Parliament
and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast).
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding essential requirements
of that Directive, and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and Annex I of Directive
2006/42/EC
The relevant Essential Clause(s)/sub-clause(s) of Remarks/Notes
Requirements of Directive this EN
2006/42/EC
To cover all the relevant safety
requirements for the products(s) in
its scope, this standard (providing
global requirements and references
to regional requirements for a
machine) has to be applied together
with one of those standards as
specified in the scope (providing
European regional requirements for
a machine).
1.1.2. Principles of safety 4, 5, 6
integration
1.1.3. Materials and products 4.1, 4.5
1.1.4. Lighting 4.9.2
1.1.5. Design of machinery to 4.11, 6.2, 6.3
facilitate its handling
1.1.6 Ergonomics 4.6
1.1.7. Operating positions 4.5.1, 4.10, 6.2, 6.3
1.1.8. Seating 4.6.3
1.2.1. Safety and reliability of  not covered
The relevant Essential Clause(s)/sub-clause(s) of Remarks/Notes
Requirements of Directive this EN
2006/42/EC
control systems
1.2.2 Control devices 4.2.2.3, 4.2.2.5, 4.4
1.2.3. Starting  not covered
1.2.4.1. Normal stop  not covered
1.2.4.2. Operational stop  not covered
1.2.4.3. Emergency stop , not covered
1.2.5. Selection of control or 4.4.2.6,
operating modes
1.2.6. Failure of the power supply 4.3.3, 4.4.3.2
1.3.1. Risk of loss of stability 4.7
1.3.2. Risk of break-up during not covered
operation
1.3.3. Risks due to falling or ejected 4.6.3.4, 4.8.4, 4.11.1,
objects
1.3.4. Risks due to surfaces, edges 4.1.4, 4.4.2.6.5, 4.5.3.1
or angles
1.3.7. Risks related to moving parts 4.5.3, 4.6.3.4, 4.8.2
1.3.8.1. Moving transmission parts 4.5.3.1
1.3.9. Risks of uncontrolled  not covered
movements
1.4.1. General requirements  not covered
1.4.2.1. Fixed guards  not covered
1.4.2.2. Interlocking movable  not covered
guards
1.4.3. Special requirements for  not covered
protective devices
1.5.1. Electricity supply  not covered
1.5.2. Static electricity  not covered
The relevant Essential Clause(s)/sub-clause(s) of Remarks/Notes
Requirements of Directive this EN
2006/42/EC
1.5.3. Energy supply other than 4.5, 4.8.3
electricity
1.5.4. Errors of fitting  not covered
1.5.5. Extreme temperatures  not covered
1.5.6. Fire 4.5.2, 4.5.4, 4.5.1.1, 4.10.1.1
1.5.7. Explosion 4.5.2. 4.5.4
1.5.8. Noise  not covered
1.5.9. Vibrations  not covered
1.5.10. Radiation  not covered
1.5.11. External radiation  not covered
1.5.13. Emissions of hazardous 4.5.1.1
materials and substances
1.5.14. Risk of being trapped in a 4.10.1.5
machine
1.5.15. Risk of slipping, tripping or 4.6.2, 4.6.3.3
falling
1.5.16. Lightning  not covered
1.6.1. Machinery maintenance  not covered
1.6.2. Access to operating positions 4.5.3.1
and servicing points
1.6.3. Isolation of energy sources  not covered
1.6.4. Operator intervention 4.4.2.6.5
1.7.1. Information and warnings on 6.3
the machinery
1.7.1.1. Information and 4.4.4, 6.3.2
information devices
1.7.1.2. Warning devices 4.8.1
1.7.2. Warning of residual risks 6.3.3.4
The relevant Essential Clause(s)/sub-clause(s) of Remarks/Notes
Requirements of Directive this EN
2006/42/EC
1.7.3. Marking of machinery 6.3
1.7.4. Instructions 6.1, 6.2
1.7.4.1. General principles for the 6.1
drafting of instructions
1.7.4.2. Contents of the instructions 6.2
1.7.4.3. Sales literature  not covered
3.2.1. Driving position  not covered
3.2.2. Seating 4.6.3.3
3.2.3. Positions for other persons 4.6.3.2
3.3.1. Control devices 4.4
3.3.2. Starting/moving 4.2.2.2, 4.2.2.4
3.3. Control systems 4.2.1
3.3.3. Travelling function 4.2, 4.3
3.3.4. Movement of pedestrian- not covered
controlled machinery
3.3.5. Control circuit failure 4.4.3.2
3.4.1. Uncontrolled movements 4.7, 4.8.4
3.4.2. Moving transmission parts 4.5.3
3.4.3. Roll-over and tip-over  not covered
3.4.4. Falling objects  not covered
3.4.5. Means of access  not covered
3.4.6. Towing devices 4.4.2.6.5
3.5.1. Batteries 4.8.4, 4.8.5
The relevant Essential Clause(s)/sub-clause(s) of Remarks/Notes
Requirements of Directive this EN
2006/42/EC
3.5.2. Fire not covered
3.6.1. Signs, signals and warnings 4.8.1, 4.9.2
3.6.2. Marking 6.3.1
3.6.3. Instructions 6
3.6.3.1. Vibrations  not covered
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
INTERNATIONAL ISO
STANDARD 3691-6
Second edition
2021-07
Industrial trucks — Safety
requirements and verification —
Part 6:
Burden and personnel carriers
Chariots de manutention — Exigences de sécurité et vérification —
Partie 6: Transporteurs de charges et de personnel
Reference number
ISO 3691-6:2021(E)
©
ISO 2021
ISO 3691-6:2021(E)
© 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
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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

ISO 3691-6:2021(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Safety requirements and/or protective measures . 3
4.1 General . 3
4.1.1 Overall requirements . 3
4.1.2 Normal climatic conditions. 3
4.1.3 Electrical requirements . 3
4.1.4 Edges and angles . 3
4.1.5 Stored energy components . 3
4.2 Starting/moving. 3
4.2.1 Unauthorized starting . 3
4.2.2 Unintended movement . 3
4.2.3 Speedometer . 4
4.3 Brakes . 4
4.3.1 General. 4
4.3.2 Stand-on carriers . 4
4.3.3 Failure of the energy supply. 4
4.4 Manual control actuators . 5
4.4.1 General. 5
4.4.2 Travel and braking controls . 5
4.4.3 Steering controls . 6
4.4.4 Marking . 6
4.5 Power systems and accessories. 7
4.5.1 Exhaust and cooling systems . 7
4.5.2 Fuel tank . . 7
4.5.3 Access to engine and other compartments . 7
4.5.4 Liquefied petroleum gas (LPG) carriers . 7
4.6 Operator and passenger positions .10
4.6.1 Dimensions .10
4.6.2 Compartment floor .11
4.6.3 Seats .11
4.6.4 Protection from burning .12
4.6.5 Protection against crushing, shearing and trapping .12
4.7 Stability .12
4.8 Protective devices .12
4.8.1 Warning device .12
4.8.2 Devices for towing .12
4.8.3 Wheels with split wheel rims for inflatable tyres .12
4.8.4 Battery restraint devices .13
4.8.5 Traction battery requirements .13
4.9 Visibility/lighting .13
4.9.1 Visibility.13
4.9.2 Lighting .13
4.10 Environmental conditions .14
4.10.1 Operator’s cab .14
4.10.2 Noise emissions .14
4.10.3 Vibration .14
4.10.4 Electromagnetic compatibility (EMC) .14
4.11 Transport .15
4.11.1 Location for lifting and/or slinging points .15
ISO 3691-6:2021(E)
4.11.2 Tie-down points .15
4.11.3 Slinging of removable attachments .15
5 Verification of safety requirements and/or protective measures .15
5.1 General .15
5.2 Functional verification .15
6 Information for use .16
6.1 General .16
6.2 Instruction handbook(s) .16
6.2.1 Concerning the carrier .16
6.2.2 Operation of the carrier .16
6.2.3 Service and maintenance of the carrier .17
6.2.4 Transportation, commissioning and storage .18
6.2.5 Truck modification .18
6.3 Marking .18
6.3.1 Information plates .18
6.3.2 Marking of controls .19
6.3.3 Other information .19
Annex A (informative) List of significant hazards.20
Bibliography .25
iv © ISO 2021 – All rights reserved

ISO 3691-6:2021(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 110, Industrial trucks, Subcommittee
SC 2, Safety of industrial trucks, in collaboration with the European Committee for Standardization
(CEN) Technical Committee CEN/TC 150, Industrial Trucks – Safety, in accordance with the Agreement
on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 3691-6:2013), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— the Introduction has been modified;
— throughout the document, old references to ISO 5053 have been updated to ISO 5053-1 and references
to ISO/TS 3691-7 to EN 16307-6;
— in 4.7, the stability requirements have been changed to ISO 22915-17;
— in 4.6.3.1, the range for weight adjustment of the seat has been changed to "52 kg to 114 kg";
— in 4.6.3.3, the requirements for restraints and handholds have been clarified;
— in 6.2.2.1, list item t) has been added;
— in 6.2.5, the old requirement has been replaced by a reference to regional requirements outside
Europe in ISO/TS 3691-8.
A list of all parts in the ISO 3691 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 3691-6:2021(E)
Introduction
This document is a type-C standard as stated in ISO 12100.
This document is of relevance, in particular, for the following stakeholder groups representing the
market players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organisations, market surveillance etc.)
Others can be affected by the level of machinery safety achieved with the means of the document by the
above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers, e. g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting
process of this document.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events
are covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or
type-B standards, the requirements of this type-C standard take precedence over the requirements of
the other standards for machines that have been designed and built according to the requirements of
this type-C standard.
This document does not repeat all the technical rules which are state-of-the-art and which are applicable
to the material used to construct the industrial truck. Reference to ISO 12100 is also necessary.
Structure
An important step forward in the work on the ISO 3691 series was the agreement to issue a new
structure of International Standards for industrial trucks having on one side basic standards for all
kinds of trucks and on the other side independent standards to cover the respective specific functions
of industrial trucks, e.g. visibility, noise, vibration, electrical requirements, etc.
Global relevance
From the beginning, the task of the working group was to revise ISO 3691:1980 and establish worldwide
basic standards to align with the major regulations in, for example, the European Union, Japan, Australia
and North America.
Every effort was made to develop a globally relevant International Standard. That goal was achieved
with most of the issues. For several potential problem areas, compromises were needed and will be
needed in the future. Where divergent regional requirements remain, these are addressed by the
EN 16307 series and ISO/TS 3691-8:2019.
vi © ISO 2021 – All rights reserved

INTERNATIONAL STANDARD ISO 3691-6:2021(E)
Industrial trucks — Safety requirements and
verification —
Part 6:
Burden and personnel carriers
1 Scope
This document gives safety requirements and the means for their verification for self-propelled
carriers designed for carrying burdens without lifting, as defined in ISO 5053-1:2020, and/or personnel
carriers, having three or more wheels, a maximum speed not exceeding 56 km/h and a load capacity
not exceeding 5 000 kg (hereafter referred to as carriers or trucks).
This document is applicable to trucks equipped with a platform (which can be tilting) for the purpose of
carrying materials or with a number of seats for the purpose of transporting passengers.
It is not applicable to:
— vehicles intended primarily for earth-moving or over-the-road hauling;
— driverless trucks;
— pedestrian controlled trucks;
— golf cars;
— tractors with a drawbar pull up to and including 20 000 N equipped with a platform for the purpose
of carrying materials.
This document deals with all significant hazards, hazardous situations or hazardous events, as listed
in Annex A, relevant to the applicable machines when used as intended and under conditions of misuse
which are reasonably foreseeable by the manufacturer.
This document does not deal with hazard due to the risk of break-up during operation.
It does not establish requirements for hazards that can occur when using trucks on public roads or
when operating in potentially explosive atmospheres.
It does not establish requirements to provide fire extinguishers.
Regional requirements, additional to the requirements given in this document, are addressed in
EN 16307-6:2014 and ISO/TS 3691-8:2019.
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 2867:2011, Earth-moving machinery — Access systems
ISO 3287:1999, Powered industrial trucks — Symbols for operator controls and other displays
ISO 3411:2007, Earth-moving machinery — Physical dimensions of operators and minimum operator space
envelope
ISO 3691-6:2021(E)
ISO 3795:1989, Road vehicles, and tractors and machinery for agriculture and forestry — Determination of
burning behaviour of interior materials
ISO 5010:2019, Earth-moving machinery — Rubber-tyred machines — Steering requirements
ISO 5053-1:2020, Industrial trucks — Vocabulary — Part 1: Types of industrial trucks
ISO 6292:2020, Powered industrial trucks and tractors — Brake performance and component strength
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13564-1:2012, Powered industrial trucks — Test methods for verification of visibility — Part 1: Sit-on
and stand-on operator trucks and variable-reach trucks up to and including 10 t capacity
ISO 13849-1:2006, Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design
ISO 15870:2000, Powered industrial trucks — Safety signs and hazard pictorials — General principles
ISO 20898:2008, Industrial trucks — Electrical requirements
ISO 21281:2005, Construction and layout of pedals of self-propelled sit-down rider-controlled industrial
trucks — Rules for the construction and layout of pedals
ISO 24135-1:2006, Industrial trucks — Specifications and test methods for operator restraint systems —
Part 1: Lap-type seat belts
ISO 22915-17:2020, Industrial trucks — Verification of stability — Part 17: Towing tractors, burden and
personnel carriers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5053-1:2020, ISO 12100:2010
and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
burden carrier
personnel carrier
mobile power-driven machine that is not self-loading, used for transporting material and/or personnel
on indoor and outdoor improved surfaces, but not for use on public roads
3.2
operator
designated person, trained and authorized, who is responsible for the movement and operation of
the carrier and, depending on the carrier type, can be transported by the carrier, or can be on foot
accompanying the truck or can be remote from the truck (remote-controlled by cables, radio, etc.)
3.3
normal operating position
position in which the operator is able to control all functions for driving as defined by the manufacturer
3.4
load capacity
maximum load, including the operator and passengers
2 © ISO 2021 – All rights reserved

ISO 3691-6:2021(E)
3.5
capacity
operator and number of passengers permitted by the manufacturer
4 Safety requirements and/or protective measures
4.1 General
4.1.1 Overall requirements
Trucks shall comply with the safety requirements and/or protective measures of this clause. In addition,
the truck shall be designed according to the principles of ISO 12100:2010 for relevant but not significant
hazards which are not dealt with by this document.
4.1.2 Normal climatic conditions
For truck operation, the following climatic conditions apply:
— average ambient temperature for continuous duty: +25 °C
— maximum ambient temperature, short term (up to 1 h): +40 °C
— lowest ambient temperature for trucks intended for use in normal indoor conditions: +5 °C
— lowest ambient temperature for trucks intended for use in normal outdoor conditions: −20 °C
— altitude: up to 2 000 m
4.1.3 Electrical requirements
Electrical systems and equipment shall be in accordance with ISO 20898:2008. However, regional
requirements can exist (see EN 16307-6:2014 and ISO/TS 3691-8:2019).
4.1.4 Edges and angles
There shall be no sharp edges or angles posing a hazard in the area of the operator in the normal
operating position or in the area of access and egress of operators or passengers and during normal
operation and daily checks.
4.1.5 Stored energy components
Components which store energy and would cause a risk during removal or disassembly, e.g. hydraulic
accumulator or spring applied brakes, shall be provided with a means of releasing the energy before
removal or disassembly.
4.2 Starting/moving
4.2.1 Unauthorized starting
Carriers shall be provided with a device (e.g. a key, a code, a magnetic card) that prevents starting
without that device.
4.2.2 Unintended movement
4.2.2.1 Parking brake
A parking brake shall be provided complying with 4.3.1.
ISO 3691-6:2021(E)
4.2.2.2 Internal combustion engine-powered carriers
Internal combustion engine-powered carriers shall be fitted with a device that prevents the engine
being started while the transmission is engaged.
4.2.2.3 Travel controls
Travel controls on internal combustion engine powered carriers shall be arranged so that, on level
ground, the carrier does not move from rest until the transmission has been engaged.
4.2.2.4 Powered travel movement
Powered travel movement of the carrier with a ride-on operator shall be possible only if the operator is
in the normal operating position.
Powered travel shall not occur automatically when the operator returns to the normal operator
position(s) without an additional operation, e.g. by requiring resetting the direction control or
reactivating speed control, etc.
4.2.2.5 Manual gearbox and manually operated clutch pedal
A carrier with an automotive-type manual gearbox and manually operated clutch pedal satisfies the
requirements of 4.2.2.2 and 4.2.2.4.
4.2.3 Speedometer
A speedometer shall be provided on ride-on carriers that have a maximum travel speed greater than
25 km/h.
4.3 Brakes
4.3.1 General
All carriers shall be designed with service and parking brakes complying with ISO 6292:2020. The
parking brake shall be equipped with a system preventing unintentional release.
Emergency braking is subject to regional requirements, additional to the requirements of this document
(see EN 16307-6:2014 and ISO/TS 3691-8:2019).
4.3.2 Stand-on carriers
Stand-on carriers shall be equipped with a brake system that automatically engages upon release of the
brake actuating control by the operator. This system may serve as the service and parking brake.
4.3.3 Failure of the energy supply
Failure of the energy supply for the brake release shall not result in loss of braking for automatically
acting brakes. The brake shall be automatically applied in the event of failure of energy supply to this
brake system.
4 © ISO 2021 – All rights reserved

ISO 3691-6:2021(E)
4.4 Manual control actuators
4.4.1 General
4.4.1.1 Consistency with the carrier motions
Movement of these controls, where practicable, shall be consistent with the carrier motions being
operated. They shall be confined within the plan view outline of the carrier or tiller.
4.4.1.2 Multiple operators
If additional operating positions are fitted, i.e. more than one operator, the operation of these controls
shall only be possible from one operating position at a time, excepting the emergency disconnect switch,
which shall be operable from all positions.
4.4.1.3 Multiple operating positions
If more than one operating position is fitted for a single operator, the use of the controls of one operating
position shall preclude the use of the controls of other operating positions, excepting the emergency
disconnect switch, which shall be operable from all positions.
4.4.2 Travel and braking controls
4.4.2.1 General
The motion of the speed operating control shall be designed such that an increase in the movement
of the control increases the travel speed. When the control is released, it shall return to the neutral
position of the control actuator.
4.4.2.2 Sit-on carriers
Pedal operated travel and braking controls shall comply with ISO 21281:2005.
4.4.2.3 Differential locking
For carriers fitted with a pedal-operated differential lock, pressing on the pedal shall lock the
differential and it shall be unlocked by releasing the pedal. It shall be possible to unlock the differential
when the truck is moving.
4.4.2.4 Hand-operated direction control lever
The movement of a direction control lever shall correspond to the selected direction of travel.
4.4.2.5 Hand-operated accelerator control lever
The control lever shall be a hold-to-run control. It shall return to the neutral position when released.
Movement towards the front of the carrier or away from the operator shall increase speed.
4.4.2.6 Additional operation from outside the carrier
4.4.2.6.1 General
If travel control from outside the carrier is provided for the operator, the travel speed shall be limited to
6 km/h. These controls can be attached to the carrier or remote control can be provided. This operating
system can be made operable by means of a separate switch or automatically when the operator leaves
the normal operating position.
ISO 3691-6:2021(E)
4.4.2.6.2 Security
If the control actuator is released, the drive unit shall switch off automatically and the brake shall be
engaged. Simultaneous operation from the operating positions shall be excluded.
4.4.2.6.3 Additional requirements for cable-connected remote control
Length and layout of the cables shall allow the operator to operate from outside of the area of hazard
of the truck and have visibility o
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