prEN ISO 18497-3
(Main)Agricultural machinery and tractors -- Safety of partially automated, semi-autonomous and autonomous machinery -- Part 3: Design principles for autonomous operating zones
Agricultural machinery and tractors -- Safety of partially automated, semi-autonomous and autonomous machinery -- Part 3: Design principles for autonomous operating zones
This document specifies principles for the design of autonomous operating zones for agricultural
machinery and tractors that are used in agricultural applications and that have partially automated,
semi-autonomous and autonomous functions. Additionally, it provides guidance on the type of
information, to be provided by the manufacturer, on safe working practices (including information about
residual risks).
The purpose of this document is to assist in the provision of more specific safety requirements, means
of verification and information for use to ensure an appropriate level of safety for agricultural machinery
and tractors with partially automated, semi-autonomous and autonomous functions used in a specified
way.
This document deals with all the significant hazards, hazardous situations and events, relevant to
agricultural machinery and tractors with partially automated, semi-autonomous and autonomous
functions when used as intended and under the conditions of misuse foreseeable by the manufacturer
during normal operation and service.
NOTE 1 While this series of documents gives principles for the design, verification, validation and
provision of information for use, the detailed requirements are dependent on the use case. Therefore,
the design principles given in this document need to be extended and clarified by the use of relevant
specific (type-C) standards, when available, or by the manufacturer of the machine using a risk
assessment. Applicability of the design principles and any additional requirements, for design,
verification, validation or information for use are outside the scope of this document.
NOTE 2 Safety requirements for specific non-automated functions of agricultural machinery and
tractors can be available in machine-specific type-C standards.
This document is not applicable to:
— forestry applications;
— operations on public roads including relevant requirements for braking and steering systems.
This document is not applicable to agricultural machinery and tractors which are manufactured before
the date of its publication
Landmaschinen und Traktoren - Sicherheit von teilautomatisierten, halbautonomen und autonomen Maschinen - Teil 3: Gestaltungsleitsätze für autonome Betriebsbereiche (ISO/DIS 18497-3:2022)
Tracteurs et matériels agricoles - Sécurité des machines partiellement automatisées, semi-autonomes et autonomes - Partie 3: Zones de fonctionnement autonome (ISO/DIS 18497-3:2022)
Kmetijski stroji in traktorji - Varnost delno avtomatiziranih, polavtonomnih in avtonomnih strojev - 3. del: Avtonomna delovna območja (ISO/DIS 18497-3:2022)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 18497-3:2023
01-februar-2023
Kmetijski stroji in traktorji - Varnost delno avtomatiziranih, polavtonomnih in
avtonomnih strojev - 3. del: Avtonomna delovna območja (ISO/DIS 18497-3:2022)
Agricultural machinery and tractors - Safety of partially automated, semi-autonomous
and autonomous machinery - Part 3: Autonomous operating zones (ISO/DIS 18497-
3:2022)
Landmaschinen und Traktoren - Sicherheit von teilautomatisierten, halbautonomen und
autonomen Maschinen - Teil 3: Gestaltungsleitsätze für autonome Betriebsbereiche
(ISO/DIS 18497-3:2022)
Tracteurs et matériels agricoles - Sécurité des machines partiellement automatisées,
semi-autonomes et autonomes - Partie 3: Zones de fonctionnement autonome (ISO/DIS
18497-3:2022)
Ta slovenski standard je istoveten z: prEN ISO 18497-3
ICS:
65.060.01 Kmetijski stroji in oprema na Agricultural machines and
splošno equipment in general
oSIST prEN ISO 18497-3:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 18497-3:2023
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oSIST prEN ISO 18497-3:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 18497-3
ISO/TC 23/SC 19 Secretariat: DIN
Voting begins on: Voting terminates on:
2022-12-05 2023-02-27
Agricultural machinery and tractors — Safety of
partially automated, semi-autonomous and autonomous
machinery —
Part 3:
Autonomous operating zones
ICS: 65.060.01
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
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oSIST prEN ISO 18497-3:2023
ISO/DIS 18497-3:2022(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 18497-3
ISO/TC 23/SC 19 Secretariat: DIN
Voting begins on: Voting terminates on:
Agricultural machinery and tractors — Safety of
partially automated, semi-autonomous and autonomous
machinery —
Part 3:
Autonomous operating zones
ICS: 65.060.01
This document is circulated as received from the committee secretariat.
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oSIST prEN ISO 18497-3:2023
ISO/DIS 18497-3:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Safety requirements and protective or risk reduction measures .3
4.1 General . 3
4.2 Design principles . 3
4.2.1 General . 3
4.2.2 Boundary detection . 3
4.2.3 Operational limits . 6
4.2.4 Monitoring . 6
4.2.5 Faults and failures . 6
4.3 Labelling and identification . 7
4.4 Information for use . 7
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 9
Bibliography .15
iii
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oSIST prEN ISO 18497-3:2023
ISO/DIS 18497-3:2022(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 19, Agricultural electronics, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 144, Tractors and machinery for
agriculture and forestry, in accordance with the Agreement on technical cooperation between ISO and
CEN (Vienna Agreement).
1) 1 1
This first edition of ISO 18497-3, together with ISO 18497-1 ,ISO 18497-2 and ISO 18497-4 , cancels
and replaces ISO 18497:2018, which has been technically revised.
The main changes are as follows:
— Autonomous operating zones were defined and were made its own part (ISO 18497-3), accounting
for the wide range of functionality and use cases within agricultural machines and tractors
A list of all parts in the ISO 18497 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.
1) Under preparation
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ISO/DIS 18497-3:2022(E)
Introduction
This document is a type-B1 standard as stated in ISO 12100:2010.
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.
In addition, this document is intended for standardization bodies elaborating type-C standards.
The requirements of this document can be supplemented or modified by a type-C standard.
For machines which are covered by the scope of a type-C standard and which have been designed and
built according to the requirements of that standard, the requirements of that type-C standard take
precedence.
The structure of safety standards in the field of machinery is as follows:
— Type-A standards (basis standards) give basic concepts, principles for design, and general aspects
that can be applied to machinery;
— Type-B standards (generic safety standards) deal with one or more safety aspects or one or more
types of safeguards that can be used across a wide range of machinery:
— Type-B1 standards on particular safety aspects (e.g. safety distances, surface temperature,
noise);
— Type-B2 standards on safeguards (e.g. two-hands controls, interlocking devices, pressure
sensitive devices, guards);
— Type-C standards (machinery safety standards) deal with detailed safety requirements for a
particular machine or group of machines.
The purpose of this document is to establish general design principles for partially automated, semi-
2)
autonomous and autonomous (see ISO 18497-1 ) functions of agricultural machinery and tractors.
Manual non-automated functions are addressed in existing agricultural machinery and tractor safety
standards. Due to the potential number of different functions of agricultural machinery and tractors
and the mixed type and mode to which these functions can exist, it is necessary to establish general
design principles. In this way, the combination, operator location, and types of interaction of these
functions can be guided so that further type-C safety standards can be developed consistently and
explicitly to address the mitigation of risk of injury to operators and bystanders. This is the primary
focus of safety standards. Attempting to define risk mitigation requirements based on combinations of
2) Under preparation
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oSIST prEN ISO 18497-3:2023
ISO/DIS 18497-3:2022(E)
type and mode of functions alone cannot be accomplished accurately for all agricultural machinery and
tractors due to the wide variety of the machinery and variety of functionality.
[1]
Therefore, the familiar representation of SAE J3016 with six levels of automation was deliberately
not chosen as a basis for this document and it is necessary to develop more specific type-C safety
standards, using the general design principles of this document, to adequately account for the risks of
agricultural machinery and tractors used in a specified way with various types of partially automated,
semi-autonomous and autonomous functions.
When the requirements of this document for partially automated, semi-autonomous and autonomous
functions of agricultural machinery and tractors are different from those which are stated in a
machine-specific type-C standard dealing with partially automated, semi-autonomous and autonomous
functions of agricultural machinery and tractors, the requirements of the machine-specific standard
take precedence over the requirements of this document.
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oSIST prEN ISO 18497-3:2023
DRAFT INTERNATIONAL STANDARD ISO/DIS 18497-3:2022(E)
Agricultural machinery and tractors — Safety of
partially automated, semi-autonomous and autonomous
machinery —
Part 3:
Autonomous operating zones
1 Scope
This document specifies principles for the design of agricultural machinery and tractors utilizing
autonomous operating zones that are used in agricultural applications and that have partially
automated, semi-autonomous and autonomous functions. Additionally, it provides guidance on the type
of information, to be provided by the manufacturer, on safe working practices (including information
about residual risks).
The autonomous operating zone itself is not in scope of this document. It can include, for example,
considerations for the autonomous operating zone location, physical or virtual boundaries, physical
boundary types (natural or man-made) and the associated risks with the autonomous operating zone
design.
The purpose of this document is to assist in the provision of more specific safety requirements, means of
verification and information for use to ensure an appropriate level of safety for agricultural machinery
and tractors with partially automated, semi-autonomous and autonomous functions used in a specified
way.
This document deals with all the significant hazards, hazardous situations and events, relevant to
agricultural machinery and tractors with partially automated, semi-autonomous and autonomous
functions when used as intended and under the conditions of misuse foreseeable by the manufacturer
during normal operation and service.
Applicability of the design principles and any additional detailed requirements, for design, verification,
validation or information for use are outside the scope of this document. When risk assessment
concludes that hazards are not significant hazards, the principles of this document do not apply.
NOTE Safety requirements for specific non-automated functions of agricultural machinery and tractors can
be available in machine-specific type-C standards.
This document is not applicable to:
— forestry applications;
— operations on public roads including relevant requirements for braking and steering systems.
This document is not applicable to agricultural machinery and tractors which are manufactured before
the date of its publication, or to systems applied to agricultural machinery and tractors put into use
before the date of its publication.
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.
1
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oSIST prEN ISO 18497-3:2023
ISO/DIS 18497-3:2022(E)
ISO 3767-1:2016, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment —
Symbols for operator controls and other displays — Part 1: Common symbols
ISO 3767-1:2016/Amd 1:2020, Tractors, machinery for agriculture and forestry, powered lawn and garden
equipment — Symbols for operator controls and other displays — Part 1: Common symbols — Amendment
1
ISO 3767-2:2016, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment —
Symbols for operator controls and other displays — Part 2: Symbols for agricultural tractors and machinery
ISO 3767-2:2016/Amd 1:2020, Tractors, machinery for agriculture and forestry, powered lawn and garden
equipment — Symbols for operator controls and other displays — Part 2: Symbols for agricultural tractors
and machinery — Amendment 1
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design
ISO 13849-2:2012, Safety of machinery — Safety-related parts of control systems — Part 2: Validation
3)
ISO 18497-1, Agricultural machinery and tractors — Safety of partially automated, semi-autonomous and
autonomous machinery — Part 1: Machine design principles and vocabulary
3
ISO 18497-2 , Agricultural machinery and tractors — Safety of partially automated, semi-autonomous and
autonomous machinery — Part 2: Design principles for obstacle protective systems
3
ISO 18497-4 , Agricultural machinery and tractors — Safety of partially automated, semi-autonomous and
autonomous machinery — Part 4: Verification methods and validation principles
ISO 25119-1:2018, Tractors and machinery for agriculture and forestry — Safety-related parts of control
systems — Part 1: General principles for design and development
ISO 25119-1:2018/Amd 1:2020, Tractors and machinery for agriculture and forestry — Safety-related
parts of control systems — Part 1: General principles for design and development — Amendment 1
ISO 25119-2:2019, Tractors and machinery for agriculture and forestry — Safety-related parts of control
systems — Part 2: Concept phase
ISO 25119-3:2018, Tractors and machinery for agriculture and forestry — Safety-related parts of control
systems — Part 3: Series development, hardware and software
ISO 25119-3:2018/Amd 1:2020, Tractors and machinery for agriculture and forestry — Safety-related
parts of control systems — Part 3: Series development, hardware and software — Amendment 1
ISO 25119-4:2018, Tractors and machinery for agriculture and forestry — Safety-related parts of control
systems — Part 4: Production, operation, modification and supporting processes
ISO 25119-4:2018/Amd 1:2020, Tractors and machinery for agriculture and forestry — Safety-related
parts of control systems — Part 4: Production, operation, modification and supporting processes —
Amendment 1
3 Terms and definitions
4)
For the purposes of this document, the terms and definitions given in ISO 18497-1 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
3) Under preparation
4) Under preparation
2
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oSIST prEN ISO 18497-3:2023
ISO/DIS 18497-3:2022(E)
— IEC Electropedia: available at https:// www .electropedia .org/
4 Safety requirements and protective or risk reduction measures
4.1 General
Agricultural machinery and tractors that have partially automated, semi-autonomous and autonomous
functions (see Figure 1) and which utilize autonomous operating zones as a measure to reduce risks
related to obstacle contact as a significant hazard, as defined in ISO 12100:2010; 3.8, shall be designed
according to the principles of 4.2 for protective or risk reduction measures.
Significant hazards are dependent on use case of agricultural machinery and tractors with partially
automated, semi-autonomous and autonomous functions and shall be determined using a risk
assessment according to ISO 12100:2010.
In addition, agricultural machinery and tractors that have partially automated, semi-autonomous and
autonomous functions and which utilize autonomous operating zones 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. For significant hazards not covered in 4.2, the determination of requirements and
corresponding verification procedures shall be done according to ISO 12100:2010.
Specific type-C standards, when available, can give more detailed requirements.
4
Figure 1 — Terms used for combinations of functions and modes (see ISO 18497-1 )
Design of machine systems and obstacle protective systems shall be designed in accordance with
4 4
ISO 18497-1 and ISO 18497-2 respectively.
4
Verification methods of ISO 18497-4 shall be applied to the design principles of 4.2.
4.2 Design principles
4.2.1 General
For ensuring an appropriate level of safety of partially automated, semi-autonomous (when automated
machine functions operate in autonomous mode) and autonomous functions of agricultural machinery
and tractors, the following protective or risk reduction measures shall be provided in the design of
agricultural machinery and tractors when utilizing autonomous operating zones as a measure to reduce
significant hazards related to obstacle contact.
4.2.2 Boundary detection
4.2.2.1 Perception and supervisory systems
a) Prevention of failures to detect, late detection, misclassification and errors in location/orientation
of a detected boundary of an autonomous operating zone shall be provided
3
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oSIST prEN ISO 18497-3:2023
ISO/DIS 18497-3:2022(E)
NOTE Due to the variety of perception systems, some of the failures above may not be applicable.
EXAMPLE 1 Reasons for typical failure to detect a boundary or late detection of a boundary:
1) boundaries are occluded due to crops, dust, fog, snow, rain or other obscurants;
2) perception results become unreliable due to poor or intense lighting conditions (e.g. direct sunlight,
reflected sunlight, darkness, shadows);
3) uneven ground causes scanning plane to vary, (e.g. the laser beam might hit the ground or point to the
sky when the vehicle is pitching down or up or tilting side to side);
4) vehicle vibration or motion causes misalignment of sensors;
5) boundaries are approaching too fast to be detected;
6) boundaries are too small, (e.g. the reliability of the radar technology depends on the effective radar
cross-section of the obstacle to identify it);
7) boundaries do not reflect back in the direction of the receiver, (e.g. laser beam or radar sensor does
not detect reflected signal from organic, or transparent; e.g. ultrasonic sensor does not detect acoustic
energy from sound-absorbing obstacles);
8) boundaries reflect or emit too much energy and saturate the sensor;
9) boundaries at the same temperature as the environment are not detected by thermal sensor;
10) boundary colour is indistinguishable from that of the background (e.g. camouflage)
11) negative boundaries (e.g. holes in the terrain) are not detected;
12) latency may increase due to other applications or computation loading used for the boundary detection
or classification system;
13) dust or other obscurants on the sensors itself can reduce the sensor field of view;
14) difficult terrain condition (e.g. mud, significant slopes) or body of water are not detected;
15) sensor is moved out of alignment or sensor is blocked by a part or parts of a machine (e.g. cover, shield,
tool);
16) sensors interfere each other (e.g. due to artificial lighting for cameras);
17) electromagnetic compatibility interference from internal or external sources;
18) erratic power supply and/or under/over voltage to system components.
EXAMPLE 2 Reasons for typical misclassification of a boundary:
1) dust, fog, snow, rain or obscurants blur the edges;
2) inadequate model to capture sufficient ground truth conditions (due to training or validation e.g. over-
fitting, under-fitting, data leakage of model or model inability to capture sufficient corner conditions);
3) boundaries are occluded due to crops, dust, fog, snow, rain, or other obscurants.
EXAMPLE 3 Reasons for typical erroneous location/orientation of a detected boundary:
1) sensor misalignment causing inaccurate position estimate;
2) positioning and orientation system errors (e.g. GNSS error) causing inaccurate machine position or
orientation;
3) vibration of the sensor mounting causing sensor motion that is not accounted for by the perception
system;
4) dust, fog, snow, rain or obscurants blur the edges of the boundary or environment;
5) inaccurate sensor calibration or registration;
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oSIST prEN ISO 18497-3:2023
ISO/DIS 18497-3:2022(E)
6) wrong estimated location of boundary due to multi-path propagation.
b) The restriction of adjustment outside the manufacturer’s defined operational limits shall be
provided
NOTE Operational parameter limit of system defined by manufacturer (e.g. temperature, speed).
Manufacturer does not allow access by operator to adjust parameters, or provides operator access to adjust
specific parameters, but the range of allowable parameters is only within the defined manufacturers limit.
c) Adequate detection performance of an autonomous operating zone boundary for the intended use
case, which:
5)
— includes the design principles found in ISO 18497-1 clause 4.2.8;
— fulfils the required risk reduction level of the manufacturer’s risk assessment shall be provided.
4.2.2.2 Other systems
NOTE Other systems are, for example: virtual fence, peripheral protection systems, fixed path systems,
buried wire, etc.
a) Prevention of failures to detect and late detection of a boundary or condition establishing a
boundary of an autonomous operating zone shall be provided
EXAMPLE Reasons for typical failure to detect or late detection:
1) latency may increase due to other applications or computation loading on the processor used for
detection;
2) sensor is moved out of alignment or sensor is blocked by a part of or parts of a machine (e.g. cover,
shield, tool) either installed correctly or not for operation;
3) sensor position does not allow for sufficient contact with boundary;
4) sensor misalignment causes inaccurate position estimate;
5) positioning and orientation system errors (e.g. GNSS error) causing inaccurate machine position or
orientation;
6) inaccurate sensor calibration or registration;
7) wrong location of boundary due to multi-path propagation.
b) The restriction of adjustment outside the manufacturer’s defined operational limits shall be
provided
NOTE Operational parameter limit of system defined by manufacturer (e.g. temperature, speed).
Manufacturer does not allow access by operator to adjust parameters, or provides operator access to adjust
specific parameters, but the range of allowable parameters is only within the defined manufacturers limit.
c) Adequate detection performance of an autonomous operating zone boundary or condition
establishing a boundary for the intended use case, which:
5
— includes the design principles found in ISO 18497-1 clause 4.2.8;
— fulfils
...
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