EN 13848-3:2021

SLOVENSKI STANDARD
01-februar-2022
Nadomešča:
SIST EN 13848-3:2009
Železniške naprave - Zgornji ustroj proge - Kakovost tirne geometrije - 3. del:
Merilni sistemi - Tirna mehanizacija za gradnjo in vzdrževanje
Railway applications - Track - Track geometry quality - Part 3: Measuring systems -
Track construction and maintenance machines
Bahnanwendungen - Oberbau - Gleislagequalität - Teil 3: Messsysteme - Gleisbau- und
Instandhaltungsmaschinen
Applications ferroviaires - Voie - Qualité géométrique de la voie - Partie 3 : Systèmes de
mesure - Engins de travaux et de maintenance de la voie
Ta slovenski standard je istoveten z: EN 13848-3:2021
ICS:
45.080 Tračnice in železniški deli Rails and railway
components
93.100 Gradnja železnic Construction of railways
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13848-3
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2021
EUROPÄISCHE NORM
ICS 93.100 Supersedes EN 13848-3:2009
English Version
Railway applications - Track - Track geometry quality -
Part 3: Measuring systems - Track construction and
maintenance machines
Applications ferroviaires - Voie - Qualité géométrique Bahnanwendungen - Oberbau - Gleislagequalität - Teil
de la voie - Partie 3 : Systèmes de mesure - Engins de 3: Messsysteme - Gleisbau- und
construction et de maintenance de la voie Instandhaltungsmaschinen
This European Standard was approved by CEN on 24 October 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 13848-3:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Symbols and abbreviations . 6
5 Track geometry measuring system fitted on OTMMs . 6
5.1 General description . 6
5.2 Environmental conditions . 8
5.3 Track features input . 9
5.4 Localization device . 9
5.5 Measuring devices . 10
5.6 Resolution . 10
5.7 Signal processing . 11
5.8 Data processing and analysis . 11
5.9 Data presentation and storage . 12
6 Testing of track geometry measuring and recording system . 13
6.1 Introduction . 13
6.2 Calibration . 13
6.3 Validation . 13
6.4 Adjustment . 19
Annex A (normative) Parameters measured by track construction and maintenance
machine . 20
Annex B (informative) Principles of measurement . 23
Annex C (normative) Description of field tests: values to be respected . 26
Annex D (informative) Track geometry measurement uncertainty . 28
Bibliography . 33
European foreword
This document (EN 13848-3:2021) 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 2022, and conflicting national standards shall be
withdrawn at the latest by June 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 13848-3:2009.
The main differences between this version and the previous version are the following:
— Formula (1) has been revised using the Math Type tool.
— Table D.1 has been drafted as a table rather than a figure.
This document is one of the series EN 13848 “Railway applications — Track — Track Geometry quality”
as listed below:
— Part 1: Characterization of track geometry
— Part 2: Measuring systems — Track recording vehicles
— Part 3: Measuring systems — Track construction and maintenance machines
— Part 4: Measuring systems — Manual and lightweight devices
— Part 5: Geometric quality levels
— Part 6: Characterization of track geometry quality
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.
1 Scope
This document specifies the minimum requirements for measuring systems fitted on track construction
and maintenance machines to give an evaluation of track geometry quality when they measure any one
or several of the parameters described in EN 13848-1.
This document also gives the acceptable differences from EN 13848-1 when using chord measurements.
This document does not specify:
— requirements for vehicle acceptance;
— criteria for track works acceptance;
— requirements for Urban Rail Systems.
Only systems put into service after the document comes into force are concerned.
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 13848-1:2019, Railway applications — Track — Track geometry quality — Part 1: Characterization
of track geometry
EN 13848-2:2020, Railway applications — Track — Track geometry quality — Part 2: Measuring systems
— Track recording vehicles
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
track construction and maintenance machine
OTMM
self-propelled or hauled machine/vehicle which is used in construction, maintenance and/or
improvement of the quality of the infrastructure and which is equipped with a track geometry
measuring system
Note 1 to entry: Track construction and maintenance machines are part of on-track machines (OTM).
3.2
sensor
device which detects, measures and translates characteristics of track geometry into quantities that can
be used for further data processing
3.3
measuring direction
course between two points on a track, independent of orientation of the OTMM
Note 1 to entry: Between two given points A and B, there are two opposite directions: A to B and B to A.
3.4
orientation
physical positioning of an OTMM, with regards to which end of the vehicle is leading or trailing
3.5
repeatability
degree of agreement between the values of successive measurements of the same parameter made
under the same conditions, within a short period of time, where the individual measurements are
carried out on the same section of track using the same measurement and interpretation methods,
subject to the following:
— similar speed;
— same measuring direction;
— same OTMM orientation;
— similar environmental conditions
3.6
reproducibility
degree of agreement between the values of successive measurements of the same parameter made
under varying conditions, within a short period of time, where the individual measurements are carried
out on the same section of track using the same measurement and interpretation methods, subject to
one or more of the following:
— variation of speed;
— different measuring directions;
— different OTMM orientations;
— different environmental conditions
3.7
validation
set of tests for determining if the measuring system of an OTMM complies with the requirements of this
document
3.8
calibration
set of procedures for adjusting the measuring devices of OTMMs in order to meet the requirements of
this document as defined in [14]
3.9
event
record of a track or line-side feature that can be either technical, physical or natural
3.10
localization
information required to locate events and the measured track geometry
3.11
reference track
track with known characteristics, to allow adequate testing of the track geometry measuring and
recording system
3.12
transfer function
refer to Annex A of EN 13848-2:2020
4 Symbols and abbreviations
For the purposes of this document, the following symbols and abbreviations apply.
Table 1 — Symbols and abbreviations
No. Symbol Designation Unit
1 D1 Wavelength range 3 m < λ ≤ 25 m m
2 D2 Wavelength range 25 m < λ ≤ 70 m m
3 D3 Wavelength range 70 m < λ ≤ 150 m for longitudinal level m
Wavelength range 70 m < λ ≤ 200 m for alignment
4 Lo Lower limit of wavelength range D1, D2, D3 m
5 Lu Upper limit of wavelength range D1, D2, D3 m
6 λ Wavelength m
7 ℓ Twist base-length m
8 OTMM Track construction and maintenance machine -
9 Vmax Maximum possible measuring speed of an OTMM km/h
10 Vmin Minimum possible measuring speed of an OTMM km/h
11 Vwork Working speed of an OTMM km/h
5 Track geometry measuring system fitted on OTMMs
5.1 General description
This document concerns only the track geometry measuring systems installed on the OTMMs used to
measure the parameters described in EN 13848-1. It does not cover the other measurement systems;
for example those used for the tamping process.

For the purpose of this document, the track geometry measuring system fitted on OTMMs is divided into
several units as represented in Figure 1 below:
Figure 1 — Track geometry measuring system
The track geometry measuring system inst
...