SIST EN 17106-4:2021

SLOVENSKI STANDARD
SIST EN 17106-4:2021
01-december-2021
Nadomešča:
SIST EN 13019:2002+A1:2009
SIST EN 13021:2004+A1:2009
SIST EN 13524:2004+A2:2014
Obratovanje cestnih strojev - Varnost - 4. del: Stroji za vzdrževanje cest - Zahteve
za stroje za rezanje grmičevja in košnjo trave
Road operation machinery - Safety - Part 4: Road service area maintenance machines -
Requirements for grass and brush cutting machines
Maschinen für den Straßenbetriebsdienst - Sicherheit - Teil 4: Maschinen für die
Straßenunterhaltung – Anforderungen für Grasmähgeräte
Machines d’exploitation des routes - Sécurité - Partie 4 : Machines d’entretien des
dépendances routières - Prescriptions spécifiques pour les faucheuses et les
débroussailleuses
Ta slovenski standard je istoveten z: EN 17106-4:2021
ICS:
43.160 Vozila za posebne namene Special purpose vehicles
65.060.99 Drugi kmetijski stroji in Other agricultural machines
oprema and equipment
SIST EN 17106-4:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 17106-4:2021

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SIST EN 17106-4:2021


EN 17106-4
EUROPEAN STANDARD

NORME EUROPÉENNE

October 2021
EUROPÄISCHE NORM
ICS 43.160; 93.080.99; C Supersedes EN 13019:2001+A1:2008, EN
13021:2003+A1:2008, EN 13524:2003+A2:2014
English Version

Road operation machinery - Safety - Part 4: Road service
area maintenance machines - Requirements for grass and
brush cutting machines
Machines d'exploitation des routes - Sécurité - Partie 4 Maschinen für den Straßenbetriebsdienst - Sicherheit -
: Machines d'entretien des dépendances routières - Teil 4: Maschinen für die Straßenunterhaltung -
Prescriptions spécifiques pour les faucheuses et les Anforderungen für Grasmähgeräte
débroussailleuses
This European Standard was approved by CEN on 16 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 17106-4:2021 E
worldwide for CEN national Members.

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SIST EN 17106-4:2021
EN 17106-4:2021 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 6
3 Terms and definitions . 7
4 Safety requirements and/or protective/risk reduction measures . 8
4.1 General . 8
4.2 Additional requirements and/or measures for permanently mounted equipment,
interchangeable equipment and trailed machines . 8
4.3 Precautions against hazards caused by moving parts excluding cutting head . 13
4.4 Interfaces . 13
4.5 Unintended lowering of the equipment . 13
4.6 Special protection of the cutting head against objects being ejected . 14
4.7 Controls for machines using revolving/oscillating tools . 14
4.8 Special protection measures to prevent unintentional contact with revolving tools in the
operating area of grass-cutting machines . 14
5 Verification of safety requirements or protective measures . 18
6 Information for use . 19
6.1 General . 19
6.2 Warning signs . 19
6.3 Instructions handbook . 20
Annex A (normative) Stipulations on the design and testing of grass and/or brush-cutting
machines . 21
Annex B (informative) Thrown-object test reports – Machines . 45
Annex C (informative) Drawings . 50
Annex D (informative) List of significant hazards . 57
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive2006/42/EC aimed to be covered . 62
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European foreword
This document (EN 17106-4:2021) has been prepared by Technical Committee CEN/TC 151 “Construction
equipment and building material machines - Safety”, the secretariat of which is held by DIN.
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 13019:2001+A1:2008, EN 13021:2003+A1:2008 and EN 13524:2003+A2:2014.
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).
For relationship with EU Directive(s), see informative Annex ZA which is an integral part of this document.
EN 17106:2021 consists of the following parts under the general title “Road operation machinery – Safety”:
— Part 1: General requirements
— Part 2: Specific requirements for road surface cleaning machines
— Part 3-1: Winter service machines - Specific requirements for snow clearing machines with rotating tools
and snow ploughs
— Part 3-2: Winter service machines - Specific requirements for spreading machines
— Part 4: Road service area maintenance machines - Specific requirements for grass and brush cutting
machines
The significant technical changes introduced in this standard, are related to the risks resulting from the
combination of a grass/brush-cutting attachment with a vehicle (truck, tractor or self-propelled machinery), in
terms of stability, mechanical interfaces, ergonomics of the control system in the cabin and visibility.
Any feedback and questions on this document should be directed to the users’ national standards body. A
complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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.
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Introduction
This document is a type-C standard as stated in EN 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 organizations, 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:
— distributors;
— machine users/employers;
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers (e.g. for maintenance);
— 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.
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1 Scope
This document applies to grass and/or brush cutting machinery which are attached to or mounted on carrier
vehicles (e.g. tractor, truck), or which are self-propelled machinery and which are defined in Clause 3.
For mobile machinery, which are a combination of a grass/brush-cutting attachment and a carrier-vehicle, this
part of the standard addresses the relevant health and safety requirements of Annex I of the machinery directive
which are inherent to the grass or brush cutting attachment itself and those resulting from the other risks which
are only related to the combination of the grass/brush-cutting attachment with the carrier vehicle (e.g. interfaces
between the attachment and the carrier-vehicle, stability, visibility). For machinery which are a combination of
a grass/brush-cutting attachment and a carrier-vehicle, this part does not deal with the carrier vehicle itself
which is covered by another European legislation.
For self-propelled machinery, this part only deals with health and safety requirements of the attachment itself
and does not deal with the self-propelled machinery itself which are dealt with in EN 17106-1:2021.
The requirements of this part are complementary to the common requirements formulated in EN 17106-1:2021.
This document does not repeat the requirements from EN 17106-1:2021, but contains clauses/subclauses which
supplement or modify the corresponding clauses/subclauses of part 1 to provide requirements for grass and/or
brush cutting machinery.
When requirements of this document are different from those which are stated in EN 17106-1:2021, the
requirements of this document take precedence over the requirements of EN 17106-1:2021 for machines that
have been designed and built according to the provisions of this document.
NOTE 1 Road regulations or Directives apply to vehicular trucks and tractors, termed ‘carrier vehicles’ in this standard.
NOTE 2 The use in public road traffic is governed by the national regulations.
This document deals with all significant hazards identified through a risk assessment pertinent to grass and/or
brush cutting machinery, when they are used as intended and under the conditions of misuse which are
reasonably foreseeable by the manufacturer (transportation, assembly, dismantling and disabling, see Annex D).
This document specifies also the appropriate technical measures to eliminate or reduce risks arising from the
significant hazards associated with machine operation, setting and adjustments, load discharge and routine
maintenance.
This document does not deal with:
— walker-operated and hand-held machines;
— machines for the maintenance of sports grounds;
— machines for agriculture, horticulture and forestry;
— pit and sewer cleaning vehicles/-machines;
— grass and brush cutting machines with multiple cutting heads (see Figure C.20);
— vertical axis grass and brush cutting machines except inter-post machinery (see Figure C.22);
— horizontal axis grass and brush cutting machines with two rotors (see Figure C.23);
— self-propelled remote-controlled machinery for road service area maintenance, except the mowing head;
— self-propelled remote-controlled machinery used for forestry application (see Figure C.21);
— cleansing and ditch maintenance machines (see Figures C.24 and C.25).
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This document does not deal with the risks associated with the operation of machines in potentially explosive
atmospheres and risks associated with electro-magnetic compatibility, vibrations and slewing cab of self-
propelled machinery.
This document does not address the safety requirements related to noise declaration.
This document is not applicable to grass and/or brush cutting machinery manufactured 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.
EN 15436-1:2008, Road service area maintenance equipment - Part 1: Terminology
EN 17106-1:2021, Road operation machinery - Safety - Part 1: General requirements
EN ISO 12100:2010, Safety of machinery - General principles for design - Risk assessment and risk reduction (ISO
12100:2010)
EN ISO 13850:2015, Safety of machinery - Emergency stop function - Principles for design (ISO 13850:2015)
ISO 536:2019, Paper and board - Determination of grammage
ISO 730:2009, Agricultural wheeled tractors - Rear-mounted three-point linkage - Categories 1N, 1, 2N, 2, 3N, 3,
4N and 4
ISO 789-1:2018, Agricultural tractors - Test procedures - Part 1: Power tests for power take-off
ISO 1974:2012, Paper - Determination of tearing resistance - Elmendorf method
ISO 2758:2014, Paper - Determination of bursting strength
ISO 3416:1986, Textile floor coverings - Determination of thickness loss after prolonged, heavy static loading
ISO 6750-1:2019, Earth-moving machinery - Operator’s manual - Part 1: Contents and format
ISO/TR 6750-2:2021, Earth-moving machinery - Operator’s manual - Part 2: List of references
ISO 11001-1:2016, Agricultural wheeled tractors - Three-point hitch couplers - Part 1: U-frame coupler
ISO 11001-2:1993, Agricultural wheeled tractors and implements - Three-point hitch couplers - Part 2: A-frame
coupler
ISO 11001-3:2009, Agricultural wheeled tractors and implements - Three-point hitch couplers - Part 3: Link coupler
ISO 11001-4:1994, Agricultural wheeled tractors and implements - Three-point hitch couplers - Part 4: Bar coupler
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3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100:2010, EN 15436-1:2008,
EN 17106-1:2021 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
road service area maintenance machine
machine situated at the traffic surface which, from this position, prepares the traffic surface and its neighbouring
areas
3.2
grass-cutting machinery
road service area maintenance machine specifically designed and manufactured for grass-cutting operations (for
example, see Figures C.1, C.2 and C.18)
Note 1 to entry: Grass-cutting machinery can be self-propelled or mounted at rear, front or laterally of a carrier-vehicle.
3.3
brush-cutting machinery
road service area maintenance machine specifically designed and manufactured for brush-cutting operations
(for example, see Figures C.1, C.2 and C.19)
Note 1 to entry: Brush-cutting machinery can be self-propelled or mounted at rear, front or laterally of a carrier-vehicle.
3.4
grass/brush-cutting machinery
road service area maintenance machine specifically designed and manufactured for grass and brush-cutting
operations (for example, see Figures C.1, C.2, C.18 and C.19)
Note 1 to entry: Grass/brush-cutting machinery are also named mixed machinery and can be self-propelled or mounted
at rear, front or laterally of a carrier-vehicle.
3.5
inter-post machinery
grass-cutting machine specifically designed to remove vegetation around and between posts (see Figures C.3 and
C.4)
3.6
releasing device
device ensuring that the cutting head of the grass and/or brush cutting machinery is mechanically or
hydraulically released when encountering an obstacle
3.7
primary control
manual control designed to operate the machine and which control main functions for frequent use
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3.8
secondary control
device to control the machine functions which need low frequent use
Note 1 to entry: Devices can be monitor or display.
4 Safety requirements and/or protective/risk reduction measures
4.1 General
Grass and/or brush cutting machines shall comply with the safety requirements and/or protective/risk
reduction measures of this clause. In addition, the machines shall be designed according to the principles of
EN ISO 12100:2010 for relevant but not significant hazards which are not dealt with by this document.
Grass and/or brush cutting machines shall comply with the requirements of EN 17106-1:2021, as far as not
modified or replaced by the requirement of this part.
Where the means of reducing the risk is by a safe system of working the machinery, Clause 6 specifies the
minimum required information regarding details of the system and of the elements of training required by the
operating personnel to be provided in the Information for use.
4.2 Additional requirements and/or measures for permanently mounted equipment,
interchangeable equipment and trailed machines
4.2.1 General
EN 17106-1:2021, 4.3.1 applies with the following addition:
The design and mounting of the grass and/or brush cutting machinery shall conform to the requirements of the
carrier vehicle defined by its manufacturer.
4.2.2 Provisions for transport, storage, mounting, dismounting and stability
EN 17106-1:2021, 4.3.4 applies with the following addition:
The off-side wheel (i.e. opposite to the side where the attachment is used in operation) shall have at least 15 %
of the total weight applied on the axle in the most unfavourable configuration, especially for the working position
(see Figure 1).
In transport position, the attachment shall not exceed the rear/front axle track (see Figure 2).
For rear-mounted articulated arm-type machinery, the following requirements apply:
— P1 + P2 + P3 < Maximum operating mass of the carrier-vehicle (Gross vehicle mass);
— P3 < Maximum Load on rear wheel;
— P1 / (P1 + P2 + P3) > Lateral stability coefficient (coeff “zone preferred” chosen 15 %);
— P2 / (P1 + P2 + P3) > Frontal stability coefficient (coeff “zone preferred” chosen 15 %).
If the coordinates of the centre of gravity on the plane represented in Figure 1 are known, then it has to be verified
that the centre of gravity falls inside the stability triangle.
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Therefore:


y≥0

 2E
y≤+xE

V

 2E
y≤− xE+

 V
With origin O (0;0) taken in the middle of the basis of the triangle (see Figure 1 or Figure 2) and with following
parameters:
— P1, P2 and P3: equivalent load applied to the ground;
— V, rear axle track;
— E, wheelbase;
— x and y, coordinates on the ground plane of the centre of gravity of the total gross weight (combination of
the carrier-vehicle and the machinery), in the most extended arm position of the machinery for the purpose
of lateral stability.

Figure 1 — Working position
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Figure 2 — Transport position
The same calculation method shall be used for other mounting configurations.
4.2.3 Controls
EN 17106-1:2021, 4.3.2 applies.
EN 17106-1:2021, 4.1.4.1 applies with the following additions and/or modifications:
Controls shall be protected against inadvertent contact.
Controls for all the movements of the arm and of the mowing head shall be hold-to-run type, except the control
of the activation of the rotating tools, except the floating control of the mowing head and except functions
designed to reduce operator fatigue and protect machine structure.
Controls shall be located on the side the operating area; they shall be located in order to minimize the obstruction
to visibility caused by their presence.
For application of EN17106-1:2021, 4.1.4.1 control panel shall be considered as secondary hand control.
By exception to EN 17106-1:2021, 4.1.4.1 primary hand controls shall be located in zone 1 (see Figures 3 or 4).
If not possible due to technical constraints in relation with the carrier vehicle design (e.g. controls of the carrier
vehicle already positioned in zone 1 that leaves no space available for additional controls in this zone), they shall
be located in zone 2 (see Figures 3 or 4).
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Dimensions in millimetres

Key
1 Zone 1 (comfort zone)
2 Zone 2 (acceptable zone under specific conditions)
Figure 3 — Definition of comfort and acceptable zones for primary hand controls on the right side
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Dimensions in millimetres

Key
1 Zone 1 (comfort zone)
2 Zone 2 (acceptable zone under specific conditions)
Figure 4 — Definition of comfort and acceptable zones for primary hand controls on the left side
4.2.4 Visibility
EN 17106-1:2021, 4.3.3 does not apply and EN 17106-1:2021, 4.1.3 applies with the following modifications:
EN 17106-1:2021, 4.1.3.1 and EN 17106-1:2021, 4.1.3.2 apply.
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EN 17106-1:2021, 4.1.3.3 is replaced by the following requirement:
In case of lack of direct or indirect visibility on the cutting head of the machine from the operator's station, a
releasing device (see 3.6) shall be fitted on the equipment.
4.3 Precautions against hazards caused by moving parts excluding cutting head
EN 17106-1:2021, 4.1.5 applies with the following additions:
Rotating or oscillating machine parts on grass and/or brush cutting machinery shall be protected against
unintentional contact by means of guards which conform to EN 17106-1:2021, 4.1.5.
4.4 Interfaces
EN 17106-1:2021, 4.3.5 applies.
EN 17106-1:2021, 4.3.5.1, 1st sentence applies with the following addition:
For the mechanical interface complying with ISO 730:2009, ISO 11001-1:2016, ISO 11001-2:1993,
ISO 11001-3:2009 or ISO 11001-4:1994 shall also be used in conjunction with ISO 730:2009.
4.5 Unintended lowering of the equipment
a) The machine when used as intended shall prevent any unintended lowering of the mowing head and/or
boom.
NOTE 1 Unintended lowering is when a mowing head or boom runs back or descends because of an interruption or
an irregularity in the energy supply.
This requirement shall be achieved by the provision of:
— non-return valves or a corresponding function in the control valves of hydraulic or pneumatic lifting
devices, or;
— self-locking driving gear or an automatic drop-latch arrangement with a ratchet wheel for mechanical
winches, or;
— a control valve as a back-run safety mechanism, only if the adoption of non-return valves is technically
not possible.
b) Where persons have to stand under raised or tilted machines or components for maintenance purposes
thereof as part of the working procedure, unintended lowering shall be prevented. This can be achieved, for
example, by:
NOTE 2 The term “as part of working procedure” does not cover repair work.
— automatically engaging mechanical locks, or;
— externally unlocking non-return valves mounted directly on the lifting cylinder, or;
— mechanical safety mechanisms which are operated from outside of the danger zone.
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c) Power-driven lifting devices shall not permit equipment to fall freely in an uncontrolled manner.
In hydraulic or pneumatic systems, this requirement is satisfied when the reverse flow is restricted e.g. by a
non-return valve, only if the adoption of non-return valves is technically not possible, an appropriately sized
orifice can be accepted.
d) Control valves and devices to protect lifting mechanisms against free-fall shall be so designed to ensure that
any variation of their setting is possible only with the aid of tools.
e) Demounting devices for demountable bodywork and components shall be designed and constructed to safely
support the equipment during the mounting or demounting process.
4.6 Special protection of the cutting head against objects being ejected
Machines shall be designed with protective measures (e.g. guards, chains, rubber plates) to prevent objects being
ejected uncontrollably by rotating tools towards the operator and into traffic areas where there is vehicular
and/or pedestrian traffic.
For grass and/or brush cutting machines and inter-post machinery, the testing method and verification means
given in Annex A shall be used.
4.7 Controls for machines using revolving/oscillating tools
EN 17106-1:2021, 4.1.4.5.3 applies with the following addition:
For hydraulic machines, it shall be possible to stop revolving or oscillating tools whilst the power source (i.e.
engine) remains running. It shall be possible to prevent the tools from being accidentally re-started.
The category of stop shall be Category '0' according to EN ISO 13850:2015, 4.1.4 (e.g. for blocking the fluid power
supply to the hydraulic/pneumatic machine actuators).
4.8 Special protection measures to prevent unintentional contact with revolving tools in the
operating area of grass-cutting machines
EN 17106-1:2021, 4.1.5 applies with the following addition:
Taking into account the necessity to be able to carry out grass-cutting operations in the direct vicinity of fixed
obstacles (e.g. delineators, traffic signs), the protective equipment shall be designed as follows.
a) Guard on grass -cutting machines in the direction of feeding and ejecting:
Guards in the direction of feeding and ejecting, e.g. deflector bar, shall be arranged as shown in Figure 5. The
spacing shall be measured from the path of rotation of the tools, where the grass-cutting machine is in the
operating position.
The removal or opening of guards shall only be possible using tools. For transportation these guards can be
removed or arranged on hinges.
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Dim
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