EN 15955-1:2025

SLOVENSKI STANDARD
01-julij-2025
Nadomešča:
SIST EN 15954-1:2013
Železniške naprave - Infrastruktura - Vlečni stroji, priklopni vagoni in spremljajoča
oprema - 1. del: Tehnične zahteve za vožnjo in delovanje
Railway applications - Infrastructure - Demountable machines, trailers and associated
equipment - Part 1: Technical requirements for travelling and working
Ta slovenski standard je istoveten z: EN 15955-1:2025
ICS:
45.060.20 Železniški vagoni Trailing stock
45.120 Oprema za gradnjo in Equipment for
vzdrževanje železnic oz. railway/cableway
žičnic construction and
maintenance
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 15955-1
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2025
EUROPÄISCHE NORM
ICS 45.060.20; 45.120 Supersedes EN 15954-1:2013, EN 15955-1:2013
English Version
Railway applications - Infrastructure - Demountable
machines, trailers and associated equipment - Part 1:
Technical requirements for travelling and working
Applications ferroviaires - Infrastructure - Machines Bahnanwendungen - Infrastruktur - Ausgleisbare
déraillables, remorques et éléments associés - Partie 1 : Maschinen, Anhänger und zugehörige Ausstattung -
Prescriptions techniques pour le déplacement et le Teil 1: Technische Anforderungen an die Versetzfahrt
travail und den Arbeitseinsatz
This European Standard was approved by CEN on 7 March 2025.

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, Türkiye 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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15955-1:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 6
Introduction . 8
1 Scope . 9
2 Normative references . 10
3 Terms and definitions . 11
4 Hazards and categories. 13
4.1 List of significant hazards . 13
4.2 Examples of demountable machines and trailers . 14
4.3 Attachments with rail wheels . 14
5 Requirements and/or measures . 14
5.1 General. 14
5.2 Machine profile . 15
5.2.1 Travelling mode gauge profile . 15
5.2.2 Working limit . 16
5.2.3 Determination of lateral limit of exceedance allowed on curves in working mode . 16
5.2.4 Limits in lower area . 16
5.2.5 Working limit in the upper area - protection for the operator . 17
5.3 Interaction with the infrastructure . 17
5.3.1 General. 17
5.3.2 Loads applied to the ballast . 18
5.3.3 Loads applied to the formation . 18
5.3.4 Rail gear . 18
5.4 Running safety equipment . 18
5.5 Inter-machine couplings . 18
5.5.1 Couplings . 18
5.5.2 Special case for trailer that cannot be coupled with other trailers . 18
5.6 Braking . 19
5.6.1 General . 19
5.6.2 Braking of towing machines . 19
5.6.3 Braking of trailers . 19
5.6.4 Breakaway braking of trailers . 20
5.6.5 Continuous service air brake system compatible with UIC brake . 20
5.6.6 Air continuous brake for trailers . 20
5.7 Driving and working cabs . 20
5.8 Communications between work positions . 20
5.9 Controls . 21
5.10 Visibility and audibility of the machine. 21
5.10.1 Requirements for demountable machines . 21
5.10.2 Requirements for trailers . 21
5.10.3 Trailer light switching arrangements . 21
5.11 Warning systems . 22
5.12 Warning systems for personnel of traffic on adjacent lines in working mode . 22
5.13 Electrical system . 22
5.13.1 General . 22
5.13.2 Working environment . 22
5.13.3 Specific requirements for urban rail machines for working with live overhead contact
line systems . 22
5.14 Electromagnetic compatibility . 23
5.14.1 Emissions from machines . 23
5.14.2 Immunity of machines from railway environment . 23
5.15 Power supply . 23
5.16 On and off tracking . 23
5.16.1 General. 23
5.16.2 Use of turntables . 24
5.17 Setting up and packing away . 24
5.18 General and railway specific attachments . 24
5.19 Emergency stopping devices. 24
5.20 Emission of gas and particles . 24
5.21 Protection from the risks of fire . 24
5.22 Trailer obscuring operator view . 25
5.23 Demountable modules . 25
5.24 Rated capacity indicator/rated capacity limiter (RCI / RCL) . 25
5.25 Climatic conditions . 25
6 Trailers used to carry machines . 26
7 Marking and numbering of the machine . 26
7.1 Identification plate . 26
7.2 Marking . 26
8 Documentation . 27
8.1 General. 27
8.2 Technical description . 27
8.3 Instructions for use . 27
8.4 Restrictions of use . 28
9 Verification of the conformity to the requirements and/or particular safety measures
................................................................................................................................................................... 28
9.1 General. 28
9.2 Methods of examination . 28
9.2.1 General. 28
9.2.2 Visual check . 28
9.2.3 Measurement . 28
9.2.4 Functional test . 28
9.2.5 Load test(s) . 28
9.2.6 Specific verification/measurements and other controls . 29
Annex A (normative) Special national conditions . 30
Annex B (normative) Checklist for conformity . 38
Annex C (informative) Technical details for buffing and draw gear . 42
C.1 General . 42
C.2 Draw gear constituent parts . 42
C.2.1 Coupling part . 42
C.2.2 Tow bar . 42
C.2.3 Screw coupling . 43
C.3 Application . 43
C.4 User information . 43
Bibliography . 44

European foreword
This document (EN 15955-1:2025) has been prepared by Technical Committee CEN/TC 256 “Railway
applications”, 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 November 2025, and conflicting national standards shall
be withdrawn at the latest by November 2025.
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 15954-1:2013 and EN 15955-1:2013.
Principal amended clauses compared to EN 15954-1:2013 and EN 15955-1:2013:
— general: all references updated to latest issue;
— 4.3: attachments with rail wheels clarified to be a trailer;
— Clause 5: clauses concerning machine profile, running safety, stability, structural strength, and failure
recovery transferred to EN 15955-2:2025;
— 5.11: additional clause added for machines intended for urban rail for warning systems;
— 5.13.3: additional clause added for machines intended for urban rail for MEWP bonding;
— 5.19: additional clause added for machines intended for urban rail for emergency stopping devices;
— 5.23: additional clause added for demountable modules;
— 5.24: additional clause added for rated capacity indicator / rated capacity limiter (RCI/RCL);
— 5.25: additional clause added for climatic conditions in geographic areas;
— Clause 6: additional clause added for trailers used to carry machines;
— Clause 8: documentation requirements completely revised (was previously called ‘User
Information’);
— Annex B: revised to suit new format and numbering.
EN 15955, Railway applications - Infrastructure - Demountable machines, trailers and associated
equipment, is currently composed with the following parts:
— Part 1: Technical requirements for travelling and working;
— Part 2: General safety requirements.
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, Türkiye and the United
Kingdom.
Introduction
The machinery concerned and the extent to which hazards, hazardous situations and events are covered
are indicated in the scope of this document.
This document is the first of a series of two parts of the European Standard: Railway applications —
Track — Demountable machines, trailers and associated equipment, dealing with railway specific risks of
the demountable machines and trailers when travelling and working on railway infrastructures:
— Part 1 covers the safety and technical requirements for the machines in travelling and working
modes, and is applicable for all machines, including those in operation on urban rail;
— Part 2 covers the safety requirements for the machines in travelling and working modes; this is a
document harmonized with the European Machinery Directive 2006/42/EC.
Part 1 specifies requirements for approval of the machine for use on the railway. Depending on the
decision of the infrastructure manager, Urban Rail Manager or the requirements in National rules the
assessment of conformance could be undertaken by the Infrastructure/Urban Rail Manager concerned,
by a third party assessor or by the manufacturer as a declaration of conformity.
Part 2 specifies requirements for the machine to be declared conformant by the manufacturer, except in
the case of machines classified under Annex 4 of the Machinery Directive, which require a conformity
check in conjunction with a notified body.
The hazards which exist in all mechanical, electrical, hydraulic, pneumatic and other components of
machines and which are dealt with in the relevant European standards are not within the scope of this
document. Where necessary, references are made to appropriate standards of this type.
1 Scope
This document specifies the requirements for demountable machines and trailers, including road-rail
trailers – henceforward referred to as ‘machines’.
NOTE 1 Trailers, including road-rail trailers, are considered as machines because they are moved along the track
by powered machines.
This document specifies the requirements to deal with the common hazards presented by their use on
the railway during transport, assembly and installation, commissioning, travelling and working on track,
use including setting, programming, and process changeover, operation, cleaning, fault finding,
maintenance and de-commissioning of the machines and associated equipment when they are used as
intended and under conditions of misuse which are reasonably foreseeable.
These machines are not designed nor intended to operate signalling and control systems and are only
designed and intended to work and travel under special operating conditions in accordance with those
permitted by the infrastructure managers. These machines are not permitted to run on railway lines open
to normal traffic.
NOTE 2 Other rail mounted railway maintenance and infrastructure inspection machines are dealt with in other
European standards, see Technical Report CEN/TR 17498:2020.
This document is also applicable to machines and associated equipment that in working mode are partly
supported on the ballast or the formation.
The requirements in this document are based on the assumption that the machines are used, operated
and maintained by skilled person(s).
This document does not include the requirements for:
— quality of the work or performance of the machine;
— use of separate equipment temporarily mounted on machines;
— machines that utilize the overhead contact line system for traction purposes or as a power source;
— hazards due to air pressure caused by the passing of high-speed trains at more than 200 km/h;
— operation subject to special rules, e.g. potentially explosive atmospheres;
— hazards due to natural causes, e.g. earthquake, lightning, flooding;
— working methods;
— operation in severe working conditions requiring special measures, e.g. corrosive environments,
contaminating environments, strong magnetic fields;
— hazards occurring when used to handle suspended loads which may swing freely.
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 14033-1:2017, Railway applications - Track - Railbound construction and maintenance machines - Part
1: Technical requirements for running
EN 14033-2:2017, Railway applications - Track - Railbound construction and maintenance machines - Part
2: Technical requirements for travelling and working
EN 15273-2:2013+A1:2016, Railway applications - Gauges - Part 2: Rolling stock gauge
EN 15746-1:2020, Railway applications - Track - Road-rail machines and associated equipment - Part 1:
Technical requirements for travelling and working
EN 15746-2:2020, Railway applications - Track - Road-rail machines and associated equipment - Part 2:
General safety requirements
EN 15877-1:2012+A1:2018, Railway applications - Marking on railway vehicles - Part 1: Freight wagons
EN 15955-2:2025, Railway applications - Infrastructure - Demountable machines, trailers and associated
equipment - Part 2: General safety requirements
EN 50121-3-1:2017, Railway applications - Electromagnetic compatibility - Part 3-1: Rolling stock - Train
and complete vehicle
EN 50122-1:2022, Railway applications - Fixed installations - Electrical safety, earthing and the return
circuit - Part 1: Protective provisions against electric shock
EN 60529:1991, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989)
EN 62262:2002, Degrees of protection provided by enclosures for electrical equipment against external
mechanical impacts (IK code) (IEC 62262:2002)
EN ISO 12100:2010, Safety of machinery - General principles for design - Risk assessment and risk reduction
(ISO 12100:2010)
EN ISO 13766-1:2018, Earth-moving and building construction machinery - Electromagnetic compatibility
(EMC) of machines with internal electrical power supply - Part 1: General EMC requirements under typical
electromagnetic environmental conditions (ISO 13766-1:2018)

As impacted by EN 50121-3-1:2017/A1:2019.
As impacted by EN 60529:1992/corrigendum May 1993, EN 60529:1992/A1:2000, EN 60529:1992/A2:2013, EN
60529:1992/A2:2013/AC:2019-02 and EN 60529:1992/AC:2016-02.
As impacted by EN 62262:2002/A1:2021.
EN ISO 13766-2:2018, Earth-moving and building construction machinery - Electromagnetic compatibility
(EMC) of machines with internal electrical power supply - Part 2: Additional EMC requirements for
functional safety (ISO 13766-2:2018)
ISO 16754:2008, Earth-moving machinery - Determination of average ground contact pressure for crawler
machines
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
demountable machine
self-propelled machine that can travel and work on rail only, and is not intended to operate signalling and
control systems
Note 1 to entry: Such a machine is designed to move onto and off track by its own means or with other lifting
equipment. In the case of demounting by its own means, these are not intended for general movement on the
ground.
Note 2 to entry: Such a machine is permitted to work and travel on the railway only under special operating
conditions granted by the infrastructure manager.
3.2
trailer
non-self-propelled machine that can be towed on rail wheels and is not intended to operate signalling
and control systems
3.3
road-rail trailer
trailer that can be towed on rails and on the ground
Note 1 to entry: Towed also includes when the trailer is being pushed in front of a powered machine.
Note 2 to entry: It does not imply that the trailer is suitable for use on the public road.
3.4
mobile elevating work platform
MEWP
mobile machine that is intended to move persons to working positions where they are carrying out work
from the work platform with the intention that persons are getting on and off the work platform at one
defined access position and which consists as a minimum of a work platform with controls, an extending
structure and a chassis
3.5
host vehicle
basic road vehicle or item of machinery which is converted to operate additionally on rails; this vehicle
is either EU road permissible or CE marked
3.6
manufacturer
entity that designs, constructs or converts the original item of machinery/vehicle to a demountable
machine or trailer
3.7
operator
person who handles the controls of a machine in order to perform the functions of the machine in
travelling and working mode
3.8
working place
driving cab, working cab, combined working and driving cab, operator position situated outside a cab,
platform and place situated at a control or maintenance location including areas for conveyance of
personnel
3.9
travelling mode
machine configuration that allows movement along the track (including shunting), where all parts are
stowed with everything within the applicable gauge, and the machine does not require to interrelate with
the signalling and control systems (in this condition there is no need to ensure operation of signalling
systems or for cab-based signalling equipment)
Note 1 to entry: A machine in travelling mode does not need to meet the operational requirements for the
movement of trains on the railway network.
Note 2 to entry: The mode only relates to the technical configuration of the machine independent of the operational
mode (e.g. movements during shunting and regular train running).
3.10
working mode
mode in which the machine is used to perform any of its permitted intended tasks; as soon as any part of
the machine is un-stowed it is in working mode
3.11
operating track
track corresponding to the criteria of the infrastructure manager on which vehicles may run under
normal signalling arrangements (with or without a speed limit)
3.12
working track
track not open for normal traffic
3.13
degraded working track
track being maintained for which the geometrical parameters may reach the limiting values and for which
special operational restrictions may apply
Note 1 to entry: The limiting values as specified in EN 14033-2:2017, Annex F.
3.14
railway infrastructure
all installations required for the running of railway vehicles
EXAMPLE Tracks, overhead contact line system, signals.
3.15
rail level
datum point corresponding to the top of the rail
3.16
continuous brake
brake on all connected machines used in dynamic conditions, for which the brake force can be varied by
the operator using a control to simultaneously apply brakes
3.17
infrastructure manager
entity responsible for establishing and maintaining railway infrastructure as well as for operating the
railway control and safety systems, including the Urban Rail Manager (as defined in EN 15746-4:2020,
3.2)
3.18
skilled person
person with relevant training, education and experience to enable them to perceive risks and to avoid
hazards associated with the machine
Note 1 to entry: Several years of practice in the relevant technical field may be taken into consideration in
assessment of professional training.
[SOURCE: ISO 14990-1:2016, 3.5.4, modified “electricity” replaced by “machine”]
4 Hazards and categories
4.1 List of significant hazards
Hazards dealt with by this document are those presented by the following specific machine functions:
— excavation;
— ballast tamping, ballast cleaning, ballast regulating, ballast consolidating;
— track renewal;
— rail maintenance;
— craning;
— overhead contact line system renewal / maintenance;
— maintenance, inspection and measurement of the components of the infrastructure;
— tunnel ventilation;
— shunting;
— emergency rescue and recovery.
4.2 Examples of demountable machines and trailers
Examples of common demountable machines and trailers are discussed and illustrated in Technical
Report CEN/TR 17498:2020.
4.3 Attachments with rail wheels
Attachments with rail wheels are considered as trailers and shall meet the requirements in this
document.
Figure 1 — Example of railway specific attachment with rail wheels (ballast brush)
5 Requirements and/or measures
5.1 General
Machines shall comply with the safety requirements and/or protective measures as specified in Clauses 5
and 6, and be supplied with information in accordance with Clause 8. Information shall be provided
specifying the intended use of the machine, see 8.2, Table 7, line a). The function(s) of machines which is
(are) dealt with in another European standard for machinery safety shall comply with that standard as
far as applicable, taking account of the additional requirements and deviations of this standard.
NOTE 1 This document covers hazards common to the adaption of machines and equipment for use on rail. Risk
assessment is an essential tool in this situation for identifying additional hazards arising for specific machinery or
equipment when a machine, equipment or chassis is modified for use on rail. For hazards not covered by this
document, the manufacturer is responsible for applying suitable risk reduction measures for these additional
hazards, which are outside the scope of this document.
NOTE 2 Examples of standards for machines that are adapted for rail use are:
— EN 474 series for earth moving machinery;
— EN 13001-1 for cranes;
— EN 12999 for cranes on trucks;
— EN 13000 for mobile cranes;
— EN 280 for mobile elevating work platforms.
Where there is a conflict between the requirements of this document and the other above-mentioned
European standard(s), then this document shall prevail.
When a choice is necessary for the application of other standards referred to in this document, the
manufacturer shall carry out a risk assessment for making this choice.
If the machine is constructed on the basis of a host vehicle, this host vehicle shall comply with one of the
following:
— the European standard for machinery safety relevant for that host vehicle (as far as not explicitly
required otherwise in specific clauses of this document),
or
— this document.
It is assumed that a finished standard automotive chassis used as a host for a demountable machine will
offer an acceptable safety level for its designed functions before conversion. This specific aspect is not
dealt with in this document.
It is assumed that a finished automotive chassis or a chassis complying with the same rules, used as a
host for a machine will offer an acceptable safety level for its designed functions before conversion. Unless
otherwise specified this specific aspect is not dealt with in this document.
NOTE 3 The basis of this document is that a machine will comply with its own standard and then have the
requirements of this document applied. The requirements in this document are additional to the requirements in
the host machine standard.
Machines shall be designed either:
— to travel and work on degraded working track within the geometric limits, see EN 14033-2:2017,
Annex F;
or
— to travel and work only on working track that is geometrically suitable for train operation. This
restriction shall be displayed in each driving cab, on the identification plate and shown in the
instruction handbook see 8.4, Table 9, line a).
5.2 Machine profile
5.2.1 Travelling mode gauge profile
5.2.1.1 General
Except as shown in 5.2.1.2 and 5.2.1.3, machines in travelling mode shall meet the dimensional
requirements of EN 15273-2:2013+A1:2016. The machine gauge profile shall be shown in the instruction
handbook, see 8.2, Table 7, line b) i).
The critical points near the limits of the permissible kinematic gauge shall be specified by the
manufacturer and shall be shown in the technical documentation detailed in 8.2, Table 7, line b) ii). For
an example see EN 14033-1:2017, Annex C,
5.2.1.2 Special case for road-rail trailers
Road-rail trailers are permitted to exceed the gauge profile set out in 5.2.1.1 for their road tyres, in
accordance with EN 15746-1:2020, 5.2.1. This exceedance is conditional that the machine does not
damage the infrastructure.
5.2.1.3 Special case for restrictive gauge profiles
Machines intended to travel on infrastructure with a more restrictive gauge profiles shall conform to the
specific rules of that infrastructure, and the corresponding restrictions shall be indicated on their
operating permits.
It is permitted for the Urban Rail Manager to have additional requirements for machines intended for use
on Urban Rail. The manufacturer shall state in the Instruction Handbook the urban rail systems on which
the machine is intended to operate, see 8.2, Table 7, line i)
5.2.2 Working limit
5.2.2.1 Interference of gauge profile on adjacent track
Machines and their moveable component parts shall be designed and built to work without unintentional
interference with the kinematic gauge necessary for the movement of machines/vehicles admitted by the
infrastructure manager without running restrictions on the adjacent operating track. For the different
zones of work and the zone limit between the working track and the adjacent operating track in service,
see EN 14033-2:2017, 5.3.2.
Where the clearance, under the worst operating conditions, between the underside of a rotating
superstructure and rail level, is less than 1 300 mm this shall be shown in the instruction handbook, see
8.2, Table 7, line b) iii). The clearance of 1 300 mm is required to enable the superstructure to slew over
adjacent track side structures, platforms, etc.
NOTE Other clearance distances could be specified by individual infrastructure managers.
Where a machine has powered moveable components capable of exceeding the kinematic envelope, e.g.
a MEWP, there shall be a means of direct communication between the operating position on the mobile
component and any other operating position of the machine.
5.2.2.2 Movement limiting devices
Where operation of the machine can exceed the working limits detailed in 5.2.2.1, lateral and height
limiting devices shall be fitted, as set out in EN 15955-2:2025, 5.40.
5.2.3 Determination of lateral limit of exceedance allowed on curves in working mode
Where it is intended that traffic is to be allowed on adjacent track, the calculation of the limiting width in
accordance with local conditions, shall be in accordance with EN 14033-2:2017, D.4. This shall be shown
in the technical information, see 8.4, Table 9, line b).
5.2.4 Limits in lower area
Machines shall be designed and built so as not to damage or interfere with the fixed infrastructure during
work, e.g. axle counters, hot axle box detectors, switch heaters, switch drives or dragging brake detectors
and signalling devices.
A machine or its constituent parts shall not be nearer than a specified safety distance from the electrified
parts of the conductor rail system given in Table 1.
Table 1 — Minimum safety distance
Voltage Minimum safety
distance between
V (DC)
machine parts and the
conductor rail
mm
750 80
1 200 120
This distance shall be taken with the worst case wheel wear and suspension condition.
Machines are permitted to travel and work over live conductor rails providing that they meet the
minimum safety distance given in Table 1.
Machines not meeting these clearances are not permitted to travel and work over live conductor rail. This
restriction shall be shown in the instruction handbook, see 8.4, Table 9, line c).
5.2.5 Working limit in the upper area - protection for the operator
All work positions at a height greater than that shown in Annex A (line 9 of Table A.2) shall be protected
such that it is not possible to make contact with live electric traction equipment.
This requirement shall be achieved by either:
a) the provision of an earthed metallic roof without open holes. Where visibility above the machine is
required, any open holes in a metallic roof shall prevent a 25 mm ball passing through. It is
permissible for non-conducting material to be used as part of a roof without holes providing that the
frame provides an earth path in the event of contact with the overhead contact line system
or
b) the machine shall be accepted for use with the restriction that it may only be operated under isolated
and earthed overhead contact line systems (this means the electrical power switched off and the
contact cable connected to ground potential). This restriction shall be shown in the instruction
handbook, see 8.4, Table 9, line b), and a notice provided on both sides of the machine.
A warning notice shall be placed on MEWPs which do not have a roof, which states that use under live
overhead wires is prohibited, see EN 50122-1:2022, 5.2.4.
Additionally, all places on the machine which allow access to either platforms or working areas without
roofs shall be marked with a warning pictogram, in accordance with EN 15877-1:2012+A1:2018, 4.5.13,
Figure 36.
When the adjacent track overhead contact line systems are not isolated and earthed, MEWPs or working
platforms shall have obstacle protection as set out in EN 50122-1:2022, 5.3.5.
5.3 Interaction with the infrastructure
5.3.1 General
The wheels, supports and working tools shall not generate harmful stresses in the infrastructure
components, and shall meet the requirements set out in EN 15746-1:2020, 5.4.1, 5.4.2 and 5.4.3, and be
shown in the instruction handbook see 8.2, Table 7, lines c) and d).
5.3.2 Loads applied to the ballast
Where the surface pressure applied directly to the ballast by any part of the machine exceeds 0,3 MN/m ,
the manufacturer shall state the maximum value for each working mode in the instruction handbook as
shown in 8.2, Table 7, line e).
NOTE The value of 0,3 MN/m can be too high for some areas. It is expected that the infrastructure manager
will be aware of these areas and specially control machines in these areas.
Machines that apply loads to the ballast by means of a tracked device shall have the surface pressure
calculated in accordance with the requirements of ISO 16754:2008.
5.3.3 Loads applied to the formation
Where the surface pressure applied directly to the formation by any part of the machine exceeds
0,1 MN/m , the manufacturer shall state the maximum value for each working mode in the instruction
handbook as shown in 8.2, Table 7, line f).
NOTE The value of 0,1 MN/m can be too high for some areas. It is expected that the infrastructure manager
will be aware of these areas and specially control machines in these areas.
Machines that apply loads to the formation by means of a tracked device shall have the surface pressure
calculated in accordance with the requirements of ISO 16754:2008.
5.3.4 Rail gear
Machines shall meet the requirements set out in EN 15746-1:2020, 5.9.1 to 5.9.8.
5.4 Running safety equipment
The operating cabs used for moving machines along the track shall be fitted with storage space for special
equipment for safety on rail for specific infrastructure, in accordance with EN 14033-1:2017, Annex H.
5.5 Inter-machine couplings
5.5.1 Couplings
Machines shall comply with EN 15746-1:2020, 5.8. Where reference is made in EN 15746-1:2020 to
‘EN 15954:2013, Annex A’ it shall be taken as EN 15
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