EN 15746-3:2020

SLOVENSKI STANDARD
01-marec-2021
Železniške naprave - Zgornji ustroj proge - Dvopotna železniška vozila in oprema -
3. del: Tehnične zahteve za obratovanje
Railway applications - Track - Road-rail machines and associated equipment - Part 3:
Technical requirements for running
Bahnanwendungen - Oberbau - Zweiwege-Maschinen und zugehörige Ausrüstungen -
Teil 3: Technische Anforderungen an das Fahren
Applications ferroviaires - Voie - Machines rail-route et équipements associés - Partie 3 :
Exigences techniques pour la circulation
Ta slovenski standard je istoveten z: EN 15746-3:2020
ICS:
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 15746-3
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2020
EUROPÄISCHE NORM
ICS 93.100
English Version
Railway applications - Track - Road-rail machines and
associated equipment - Part 3: Technical requirements for
running
Applications ferroviaires - Voie - Machines rail-route et Bahnanwendungen - Oberbau - Zweiwege-Maschinen
équipements associés - Partie 3 : Prescriptions pou la und zugehörige Ausrüstungen - Teil 3: Technische
circulation Anforderungen an das Fahren
This European Standard was approved by CEN on 5 May 2019.

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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15746-3:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
1.1 General . 6
1.2 Validity of this document . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Machine categorization . 8
4.1 Categories . 8
4.2 Type qualification for being in a train . 8
4.2.1 Category 8 machine in running mode . 8
4.2.2 Category 9 machine in running mode . 8
5 Railway specific safety requirements and/or measures . 8
5.1 General . 8
5.2 Rolling stock gauge . 8
5.2.1 Running gauge . 8
5.2.2 Machine in running mode . 9
5.2.3 Limits in lower area in running mode . 9
5.3 Running safety equipment . 9
.................................................................................................................................... 9
5.3.1 Indication equipment
5.3.2 Data recorder . 9
5.4 Safety against derailment . 9
5.4.1 General . 9
5.4.2 Safety against derailment for machines . 10
5.4.3 Dynamic tests on track for first type approved machines . 10
5.4.4 Railhead clearing devices . 10
5.5 Stability and prevention of overturning . 11
5.6 Machine frame and structure . 11
5.6.1 Design of the machine frame. 11
5.6.2 Lifting and jacking points . 11
5.7 Inter-machine couplings. 12
5.7.1 General . 12
5.7.2 Category 8 machines buffing and drawgear . 12
5.8 Running gear . 12
5.8.1 General . 12
5.8.2 Distribution of the wheelset forces in running mode . 12
5.8.3 Rail wheel, wheel profile . 12
5.8.4 Rail wheel arrangements . 12
5.8.5 Load on rail wheels . 12
5.8.6 Operation of spring loaded points . 13
5.8.7 Ratio of wheel load on guiding wheels to road axle load . 13
5.9 Rail wheel suspension . 14
5.10 Braking . 15
5.11 Driving and working cabs and places . 15
5.12 Visibility and audibility of the machine . 15
5.12.1 General . 15
5.12.2 Marker lights in running mode . 15
5.12.3 Head lights. 16
5.12.4 Warning horns . 16
5.13 Operation of track equipment . 16
5.13.1 Operation of track circuits . 16
5.13.2 Operation of axle-counters and treadles . 17
5.13.3 Operation of treadles associated with level crossings . 17
5.13.4 Operation of hot axlebox and unreleased brake detectors . 17
5.13.5 Operation of other signalling equipment . 17
5.14 Fire protection . 17
5.14.1 Material requirements . 17
5.14.2 Specific measures for flammable liquids . 17
5.14.3 Portable fire extinguishers . 17
5.14.4 Fire detection systems . 17
5.14.5 Driver’s cab emergency exit . 17
5.15 Recovery . 17
5.16 Space between machines during coupling . 18
5.17 Doors . 18
5.18 Side windows. 18
5.19 Load conditions . 18
5.20 Minimum curve radius . 18
5.21 Lifeguards . 18
5.22 Environmental . 18
5.23 Equipotential bonding . 18
5.24 Driver's vigilance . 18
5.25 Driver's indication . 18
5.26 Labelling in cab . 18
5.27 Remote controls . 18
5.28 Noise . 19
6 Marking and numbering of the machines . 19
7 User information . 19
8 Verification of the conformity to the requirements and/or particular safety
measures . 20
Annex A (normative) Special national conditions . 21
Annex B (normative) Check list for conformity . 22
Annex C (informative) Certificates . 26
C.1 Certificate of type approval to EN 15746-3:2020. 26
C.2 Conformance control document for the technical requirements of EN 15746-3:2020. 27
C.2.1 Machine identification . 27
C.2.2 General characteristics . 27
Annex D (informative) Structure of European Standards for track construction and
maintenance machines . 29
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive (EU) 2016/797 aimed to be covered . 31
Bibliography . 35

European foreword
This document (EN 15746-3:2020) 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 June 2021, and conflicting national standards shall be
withdrawn at the latest by June 2021.
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 has been prepared under a mandate 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 15746, Railway applications — Track — Road-rail machines and associated equipment, is currently
composed with the following parts:
— Part 1: Technical requirements for travelling and working;
— Part 2: General safety requirements;
— Part 3: Technical requirements for running;
— Part 4: Technical requirements for running, travelling and working on urban rail.
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.
Introduction
This European Standard was prepared to meet the essential requirements of EU Directives to facilitate
an open market for goods and services.
This document is the third of a series of four parts of the European Standard, Railway applications —
Track — Road-rail machines and associated equipment, dealing with railway specific risks of the road-
rail machines when running, travelling and working on railway infrastructures:
— Part 1 covers the technical requirements for the machines in travelling and working modes, and is
applicable for all machines.
— 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 3 covers the essential requirements for the machines that have a running mode and run on
tracks within the scope of the Railway Directive 2007/58/EC; this is a document harmonized with
the Railway Interoperability Directive 2008/57/EC and its associated Technical Specifications for
Interoperability (TSI).
— Part 4 covers the technical requirements for the machines intended to have running, travelling
and/or working mode on urban rail.
Part 1 defines requirements for approval of the machine for use on the railway. Depending on the
decision of the Infrastructure Manager or National rules the assessment of conformance could be by the
Infrastructure Manager concerned, by a third party assessor or declaration of conformity by the
manufacturer.
Part 2 defines 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.
Part 3 defines requirements for running on the European railway network. Assessment of conformity is
by a notified body as prescribed in the Railway Interoperability Directive.
Part 4 defines requirements for approval of the machine for use on urban rail. Depending on the
decision of the controller of the network or National rules the assessment of conformance could be by
the Urban Rail Manager concerned, by a third party assessor or declaration of conformity by the
manufacturer.
The risks 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
European Standard. Where necessary, references are made to appropriate standards of this type.
1 Scope
1.1 General
This document deals with the technical requirements to minimize the specific railway hazards of self-
propelled road-rail machines, as defined in EN 15746-1:2020, 3.1, henceforward referred to as
machines, when designed and intended for running on European railways within the scope of European
Directive 2007/58/EC.
The running mode is an option designed by the manufacturer which permits the use of the machine on a
specified railway infrastructure without the need for special operational rules.
NOTE 1 The use of special track safety equipment (i.e. part of automatic train protection systems) does not
necessarily mean that the machine has a running mode; some Infrastructure Managers use such equipment as
means of protection for machines in travelling and/or working modes.
NOTE 2 This document is written for 1 435 mm nominal track gauge; special requirements can apply for
running on infrastructures with narrow gauge or broad gauge lines.
Urban rail and railways utilizing other than adhesion between the rail and wheels are not included in
this document.
This document does not apply to the following:
— the specific requirements established by the machine operator for the use of machines, which will
be the subject of negotiation between the manufacturer and the Infrastructure Manager;
— travelling and working both on and off rails;
— running on urban rail.
For a road-rail machine it is assumed that an EU road permissible host vehicle will offer an accepted
safety level for its designed basic functions before conversion. Unless explicitly stated otherwise in a
particular clause this specific aspect is not dealt with in this European Standard.
1.2 Validity of this document
This document applies to all machines which are within the scope of the Commission Regulation (EU)
No 1302/2014 for locomotives and passenger rolling stock.
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 12663-1:2010+A1:2014, Railway applications — Structural requirements of railway vehicle bodies —
Part 1: Locomotives and passenger rolling stock (and alternative method for freight wagons)
EN 12663-2:2010, Railway applications — Structural requirements of railway vehicle bodies — Part 2:
Freight wagons
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 14363:2016+A1:2018, Railway applications — Testing and Simulation for the acceptance of running
characteristics of railway vehicles — Running Behaviour and stationary tests
EN 15153-1:2020, Railway applications — External visible and audible warning devices for trains —
Part 1: Head, marker and tail lamps
EN 15273-2:2013+A1:2016, Railway applications — Gauges — Part 2: Rolling stock gauge
EN 15437-1:2009, Railway applications — Axlebox condition monitoring — Interface and design
requirements — Part 1: Trackside equipment and rolling stock axlebox
EN 15437-2:2012, Railway applications — Axlebox condition monitoring — Interface and design
requirements— Part 2: Performance and design requirements of on-board systems for temperature
monitoring
EN 15528:2015, Railway applications — Line categories for managing the interface between load limits
of vehicles and infrastructure
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 50617-2:2015, Railway applications — Technical parameters of train detection systems for the
interoperability of the trans-European railway system — Part 2: Axle counters
EN 62625-1:2013, Electronic railway equipment — On board driving data recording system — Part 1:
System specification (IEC 62625-1:2013)
EN ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk
reduction (ISO 12100:2010)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100:2010,
EN 15746-1:2020 and EN 15746-2:2020 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp

As impacted by EN 50617-2:2015/AC:2016.
As impacted by EN 62625-1:2013/A11:2017.
4 Machine categorization
4.1 Categories
The machines are divided into four categories as shown in EN 15746-1:2020, Clause 4.
4.2 Type qualification for being in a train
4.2.1 Category 8 machine in running mode
Machines of Category 8 may be part of a train, but only under the conditions prescribed by the railway
undertaking of such a train and/or by the Infrastructure Manager.
4.2.2 Category 9 machine in running mode
The machine cannot be incorporated within a train but shall be designed and intended to operate
signalling and control systems, and shall comply with this standard.
NOTE The acceptance procedures for access to the railway infrastructure are likely to differ between running
mode and travelling/working modes
A compatibility assessment will need to be undertaken to ensure the signalling command and control
system fitted on the machine is compatible with the line to be run upon.
5 Railway specific safety requirements and/or measures
5.1 General
Machines shall comply with the safety requirements and/or protective measures in accordance with
EN 15746-1:2020, Clauses 5 and 6, and this standard.
5.2 Rolling stock gauge
5.2.1 Running gauge
Except in the lower area, machines in running mode shall meet the dimensional requirements of
EN 15273-2. The critical points near the limits of the permissible kinematic gauge,
see EN 14033-1:2017, Annex C, shall be recorded in the technical documentation as shown in Clause 7,
b), 3), i).
In the lower area deviations could be permitted by the Infrastructure Manager for machines according
to Category 9 B and Category 9 C and equivalent machines belonging to Category 8 to accommodate
road wheels, as shown in EN 15746-1:2020, Figure 5. The requirement is that the machine does not
damage the infrastructure.
NOTE 1 The G1 Profile in EN 15273-2:2013+A1:2016, Figure A.4 meets the cross acceptance gauging
requirements for the majority of mainland European countries.
NOTE 2 National conditions may apply to this exceedance amount, see Annex A.
Machines intended to run on infrastructures with more restrictive gauges shall conform to the specific
rules of those infrastructures and the corresponding restrictions shall be indicated in the instruction
handbook.
No metallic part of the vehicle shall be permitted, under any circumstance of predictable use and wear,
to encroach into the area outside the lower vehicle gauge shown in EN 15273-2:2013+A1:2016,
Figure A.6.
5.2.2 Machine in running mode
5.2.2.1 Stowing of moveable machine parts in running mode
When the machine is in the running mode any movable equipment which has the capacity to go outside
the gauge shall be capable of being stowed in a manner which prevents accidental or unintended
movement out of the gauge. All such moveable parts and assemblies forming part of the machine that
are unpacked in order to allow the machine to work in rail and non-rail mode shall, in their stowed
state, be secured by devices capable of resisting the foreseeable forces encountered during running,
which shall not rely upon a power source to retain the locking function. Moveable parts shall be held by
either:
— efficient locks. The visible positive locking components in running mode shall be painted in red. If
the locking mechanism is powered, the control of locking should preferably be possible from inside
the machine gauge;
or
— check valves on hydraulic systems, which shall prevent movement and be fail safe.
It shall be obvious to anyone checking the machine that these parts of the machine are locked in their
stowed position. Furthermore, for locking devices operable from the cab, either a red warning light
shall illuminate on the driver's desk to indicate if any moveable part of the machine is not locked, or a
green light shall indicate on the driver's desk that all moveable parts of the machine are locked.
5.2.2.2 Operating controls in running mode
When in running mode, all operating controls not related to running, including locking devices, shall be
deactivated.
5.2.3 Limits in lower area in running mode
Machines, where permitted by the Infrastructure Manager to exceed the lower gauge area
(see EN 14033-2:2017, Annex D) as shown in EN 15746-1:2020, 5.2.1, shall have any operating
restrictions stated on the type approval certificate.
5.3 Running safety equipment
5.3.1 Indication equipment
Machines with a running mode shall be fitted with special equipment specific for running safety on
specific infrastructures, see EN 14033-1:2017, Annex J.
The controls for this equipment shall be located in each driving cab.
5.3.2 Data recorder
Machines with a running mode shall carry at least one data recorder compliant with
EN 62625-1:2013 , 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.3.1.3, 4.3.1.4 and 4.3.1.6, where required by the specific
national safety authority; see Annex A.
5.4 Safety against derailment
5.4.1 General
The aim of the following requirements is to provide the same level of confidence for safety against
derailment on the operating track as given by the acceptance procedures defined in
EN 14363:2016+A1:2018, 6.1 and Clause 7.
5.4.2 Safety against derailment for machines
First type approved machines shall follow the acceptance procedure according to
EN 14363:2016+A1:2018:
— Subclause 6.1: the most adversely loaded condition when moving along the track in running mode
shall be investigated;
— Clause 7 in running mode: when using EN 14363 the machine is described as a “special vehicle” due
to the low numbers of these machines, as defined in EN 14363:2016+A1:2018, 3.15. In some cases
EN 14363 does not have specific requirements for “special vehicles”, in such case the machines
shall be assigned to a vehicle type most applicable to their design.
The running characteristics of a machine or a machine type are permitted to be determined by running
tests or by reference to a similar type approved machine.
A “similar type approved machine” is a machine with similar configuration and running under similar
conditions, which can be used as a reference for the test exemption of a new machine, according to the
requirements of EN 14363:2016+A1:2018, 5.3.1 and Table U.1.
When running tests are required, they should be carried out by an authorized body or by the
manufacturer of the machine, if the manufacturer is recognized as a testing body by the accreditation
body.
5.4.3 Dynamic tests on track for first type approved machines
After the tests shown in 5.4.2 have been successfully undertaken the first type approved machine shall
have actual dynamic tests on track undertaken in the most adversely loaded condition in the running
mode when moving along the track at its maximum speed. Where the maximum speed is limited for
specific track conditions this shall be recorded in the instruction handbook, see Clause 7, a), 3), iii) to x)
and detailed on the identification plate EN 14033-1:2017, Annex F. These tests shall be carried out on
track shown in a) to d):
a) the suspension is not detrimentally excited by a representative range of track conditions;
b) the machine is able to run over raised check rails and guard rails, the height of these being specified
by the Infrastructure Manager;
c) where the machine is stated to run in areas of retarders (track mounted braking system) the
machine is able to run over these devices without derailing
d) the machine does not derail while going through switches, crossings and curves.
NOTE One possible method to prove safety against derailment in switches and crossing for machines with
small wheels is given in EN 14363:2016+A1:2018, Annex E.
These tests should be carried out by an authorized body or by the manufacturer of the machine if the
manufacturer is recognized as a testing body by the authorized body.
When doing ∆Q/Q test the Q is the mean wheel load of the axle and the ∆Q is the maximum wheel
unloading due to the test conditions applied.
5.4.4 Railhead clearing devices
Machines shall be equipped with devices as described in EN 15746-2:2020, 5.10.2 and/or 5.10.3.
5.5 Stability and prevention of overturning
Requirements for prevention of overturning and stability are shown in EN 15746-2:2020, 5.11.
5.6 Machine frame and structure
5.6.1 Design of the machine frame
5.6.1.1 Requirements for Category 9 machines
The machine frame shall meet the requirements of EN 15746-1:2020, 5.7.1.
5.6.1.2 Requirements for Category 8 machines
The machine frame shall be able to withstand the following forces without any permanent deformation
when running in a train:
a) machines not permitted to be loose shunted or hump shunted shall be constructed to meet the
requirements of the load cases 6.1 to 6.5 of Category FII of EN 12663-1 or EN 12663-2 with the
following deviations:
1) item 4.5, c) vertical load during lifting of the machine frame with the bogie to 2 g;
2) EN 12663-1:2010+A1:2014, Table 13 or EN 12663-2:2010, Table 10 to read acceleration in the
x direction ± 3 g;
3) machines which are restricted to be positioned only at the front or rear of a train are permitted
to be constructed to withstand towing and impact forces of 0,8 MN.
All other Category 8 machines shall be constructed to meet the requirements of the load cases 4.1 to 4.5
of Category FI of EN 12663-1 or EN 12663-2 with the following deviations:
b) Item 4.5, c) vertical load during lifting of the machine frame with the bogie to 2 g;
and
c) EN 12663-1:2010+A1:2014, Table 13 to read acceleration in the x direction ± 3 g.
5.6.2 Lifting and jacking points
Lifting and jacking points shall be fitted capable of safely supporting the whole machine while being
lifted or jacked. It shall also be possible to lift or jack one end of the machine (including its running
gear) with the other end resting on the remaining running gear. The locations (and any restrictions of
use) of lifting and jacking points, where fitted, shall be detailed in the instruction handbook, see
Clause 7, b), 3), viii).
In addition for Category 8 machines the following requirements apply:
a) The load cases specified in EN 12663-2 shall apply for lifting and jacking under workshop and
servicing operations.
b) For lifting cases associated only with rescue following derailment or other abnormal incident,
where some permanent deformation of the structure is acceptable, it is permissible to reduce the
safety factor in Tables 9 and 10 from 1,1 to 1,0. If a factor of 1,0 is used for a validation test, the
measured strains shall be extrapolated to demonstrate the conformance to the higher factor.
c) The location of the lifting and jacking points shall be defined by the customer's operational
requirements.
5.7 Inter-machine couplings
5.7.1 General
Except as shown in 5.7.2 the couplings shall comply with EN 15746-1:2020.
5.7.2 Category 8 machines buffing and drawgear
5.7.2.1 Couplings
Requirements shall be according to EN 14033-1:2017, 10.2.1.
5.7.2.2 Buffers
Requirements shall be according to EN 14033-1:2017, 10.2.2.
5.7.2.3 Space to be kept free at the end of the machine
Requirements shall be according to EN 14033-1:2017, 10.5.
5.8 Running gear
5.8.1 General
The running gear structures shall be designed to ensure that no significant permanent deformation or
fatigue fracture occurs under all intended load cases.
The manufacturer shall either:
a) verify that the stress levels in each component of the running gear and their connection to the host
vehicle are within known limits for the material in use and that due account has been taken of the
dynamic stresses produced by running, travelling and working on the rails;
or
b) provide evidence of the stress levels in the running gear and their connection to the host vehicle
demonstrating, via the safety record of machines having a comparable design and loading, that the
stress levels in the running gear are within known limits for the material in use.
5.8.2 Distribution of the wheelset forces in running mode
In running mode the position of the rail wheelsets and their loads shall comply with the requirements of
EN 15528:2015. The “Line Category” of machines in running mode shall be shown on the identification
plate as described in Clause 6.
5.8.3 Rail wheel, wheel profile
Machines in running mode shall meet the requirements of EN 15746-1:2020, 5.9.4.
5.8.4 Rail wheel arrangements
The rail wheels shall be mounted in such a way as to give the machine safe rail guidance.
5.8.5 Load on rail wheels
The maximum static load per wheel in the working and non-working condition is given in Table 1.
Table 1 — Load on rail wheels
Wheel diameter Running mode load per rail
wheel
∅ Static
mm t
∅ ≥ 920 11,25
920 > ∅ ≥ 840 11,25
840 > ∅ ≥ 760 10,0
760 > ∅ ≥ 680 9,25
680 > ∅ ≥ 630 8,5
630 > ∅ ≥ 550 7,25
550 > ∅ ≥ 470 6,25
470 > ∅ ≥ 390 5,25
390 > ∅ ≥ 330 4,75
330 > ∅ Not permitted in running mode
∅ = worn rail wheel diameter limit (mm)

5.8.6 Operation of spring loaded points
Where the axle load is less than 5 t (wheel load of 2,5 t), the machine cannot be expected to operate
spring loaded points. These limitations shall be specified in the instruction handbook, see Clause 7, a),
1), ii).
5.8.7 Ratio of wheel load on guiding wheels to road axle load
For Category 9 C machines (where road wheels share the load with the guiding rail wheels), the rail
wheel load shall be set up to ensure that the machine complies with the braking, resistance to
derailment and stability requirements of this standard with all permitted load variations.
Where the ratio of wheel loads has the potential to vary, e.g. where controlled by hydraulic pressure,
there shall be a warning device given in EN 15746-2:2020, Table 4 to indicate an unsatisfactory
wheelset support force as an example see warning line indicated on Figure 1.
An example of the set up for a shared load is shown in the graph set out in Figure 1. This displays the
load on the road wheels compared against rail wheels. The “y” axis shows the load on the rail wheels,
and the “x” axis the road wheels. The figures set out are for an axle; hence the wheel loads on each axle
(or opposite each other on stub axles) should be added together. The comparison between road and rail
wheels should be made for adjacent wheels.
If it is decided to use the graph in Figure 1, then the road wheel weights should be taken with the
machine in road mode, then when in rail mode the rail wheel load adjusted to suit the figure in the
graph in Figure 1.
With Category 9 C machines it is vital that the wheel loads are shared appropriately between the road
and rail wheels to ensure the correct amount of guidance from rail wheels and brake/traction from
road wheels. On machines where the normal laden and tare weights do not vary significantly, e.g.
excavators, MEWPs, landrovers, etc., the initial setting could be considered sufficient to provide
adequate loading. Where the axle loads on the road wheels vary by a large proportion, e.g. between tare
and laden condition on lightweight machines, heavily laden machines such as water tankers, etc., the
load on the rail wheels could need to vary accordingly to ensure braking and resistance to derailment in
all load conditions. Consideration should also be given to the potential locations where the machine will
be used, for example where rails are sunken into concrete or tarmac (docks/depots/tramways, etc.)
there is the potential for the road wheel to relieve the load on rail wheel, hence a means of retaining the
rail wheel load will need to be fitted in this instance.
It is also good practice to warn the operator of too much rail wheel loading.

Key
1 wheelset support force of rail guide in relation to vehicle axle load
2 wheelset support force, in kN
3 axle load on road wheels, in kN
wheelset support force
min. wheelset support force
warning
Figure 1 — Ratio of wheelset load on guiding wheels to road axle load
5.9 Rail wheel suspension
The machine in running mode shall meet the requirements of EN 15746-1:2020, 5.10.
5.10 Braking
Requirements for the braking system are as given in EN 14033-1:2017, Clause 9.
NOTE The manufacturer is able to select whichever category set out in EN 14033-1:2017, Clause 9 best suits
the particular machine.
5.11 Driving and working cabs and places
Machines shall have a driving cab for the direction(s) of travel permitted in running mode meeting the
requirements of EN 14033-1:2017, 14.3.1, 14.3.2, 14.4, 14.5, 14.8 and 14.10.
Machines will be permitted for shunting operations in directions other than those permitted for
running mode with local operating rules specific to the country or area of operation.
Some Infrastructure Managers may permit machines in running mode with a maximum
speed < 20 km/h, for the driver to have visibility in the direction of movement provided by CCTV as set
out in EN 15746-2:2020, 5.4.6.3 and 5.4.6.4.
5.12 Visibility and audibility of the machine
5.12.1 General
All road lighting including flashing beacons, shall be isolated against use when t
...