FprEN 17936
(Main)Railway applications - Acoustics - Measurement of source terms for environmental noise calculations
Railway applications - Acoustics - Measurement of source terms for environmental noise calculations
This document addresses the measurement of source terms for environmental noise calculation for rail traffic (including light rail, such as trams, metros, etc.). It is applicable to the measurement of in-service trains on operational tracks.
It is not applicable to type acceptance testing of rolling-stock or tracks, or to derive source terms for time domain models.
The following rail traffic noise source types are in the scope:
- rolling noise;
- traction and equipment noise;
- aerodynamic noise;
- impact noise (e.g. rail joints, switch and crossings, wheel flats);
- braking noise;
- bridge noise;
- squeal noise.
Noise from rail vehicles at standstill, such as stationary engine idling and auxiliary equipment at yards and stations, is covered by EN ISO 3095:2013 for measurement procedures and operating conditions, and by EN ISO 3740:2019 and EN ISO 3744 for the determination of sound power. It is therefore not in the scope of this document.
The calculation of the propagation of sound is part of generally standardized propagation models which are not addressed in this document.
Noise from fixed installations (e.g. stations, depots, electricity sub-stations) is not in the scope of this document.
Source terms are specific to a vehicle and track type. The scope includes measurement procedures and conditions and sampling requirements.
Bahnanwendungen - Akustik - Messung der Quellterme für Umgebungslärmberechnungen
Applications ferroviaires - Acoustique - Mesurage des termes sources pour le calcul du bruit en environnement
Le présent document spécifie les procédures de mesure des termes sources afin de calculer le bruit en environnement généré par le trafic ferroviaire (y compris celui généré par la circulation des véhicules légers comme les tramways, métros, etc.). Il s'applique aux mesurages effectués sur les trains en service circulant sur voies en exploitation.
Il ne s'applique pas aux essais d'homologation des matériels roulants ou des voies ni à la détermination de termes sources pour les modèles dans le domaine temporel.
Le domaine d'application couvre les types suivants de sources de bruit de trafic ferroviaire :
- le bruit de roulement ;
- le bruit de traction et le bruit généré par les équipements ;
- le bruit aérodynamique ;
- le bruit d'impact (joints de rail, appareils de voie, méplats de roue, par exemple) ;
- le bruit de freinage ;
- le bruit des ponts ;
- le bruit de crissement.
Le bruit généré par les véhicules ferroviaires à l'arrêt, comme le bruit généré par le moteur au ralenti et par les auxiliaires dans les gares de triage et les gares ferroviaires, est couvert par l'EN ISO 3095:2013 (procédures de mesure et conditions d'exploitation) et par l'EN ISO 3740:2019 et l'EN ISO 3744 (détermination des niveaux de puissance acoustique). Il ne relève donc pas du domaine d'application du présent document.
Le calcul de la propagation du son relève des modèles de propagation généralement normalisés, qui ne sont pas couverts par le présent document.
Le bruit généré par les installations fixes (gares, dépôts, postes d'alimentation électrique, par exemple) ne relève pas du domaine d'application du présent document.
Les termes sources sont spécifiques à un type de véhicule et un type de voie donnés. Le domaine d'application couvre les procédures et les conditions de mesurage, ainsi que les exigences relatives à l'échantillonnage.
Železniške naprave - Akustika - Merjenje osnovnih pogojev za izračun okoljskega hrupa
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 17936:2023
01-februar-2023
Železniške naprave - Akustika - Merjenje osnovnih pogojev za izračun okoljskega
hrupa
Railway applications - Acoustics - Measurement of source terms for environmental noise
calculations
Bahnanwendungen - Akustik - Messung der Quellterme für
Umgebungslärmberechnungen
Applications ferroviaires - Acoustique - Mesurage des termes sources pour le calcul du
bruit en environnement
Ta slovenski standard je istoveten z: prEN 17936
ICS:
17.140.30 Emisija hrupa transportnih Noise emitted by means of
sredstev transport
93.100 Gradnja železnic Construction of railways
oSIST prEN 17936:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN 17936:2023
oSIST prEN 17936:2023
DRAFT
EUROPEAN STANDARD
prEN 17936
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2022
ICS
English Version
Railway applications - Acoustics - Measurement of source
terms for environmental noise calculations
Applications ferroviaires -¿ Acoustique -¿ Mesurage des Bahnanwendungen - Akustik - Messung der
termes sources pour le calcul du bruit en Eingangsparameter für Umgebungslärmberechnungen
environnement
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 256.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17936:2022 E
worldwide for CEN national Members.
oSIST prEN 17936:2023
prEN 17936:2022 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Acoustic basics for this standard . 10
4.1 Accuracy / uncertainties . 10
4.2 Frequency range and spectral bands . 10
4.3 Type of measurements . 10
5 Instrumentation and calibration . 10
5.1 General. 10
5.2 Acoustic instrumentation . 11
5.3 Calibration of the acoustic instrumentation . 11
5.3.1 Temporary setup . 11
5.3.2 Automated calibration . 11
5.4 Non-acoustic instrumentation . 12
5.4.1 Time and duration . 12
5.4.2 Speed, track and direction . 12
5.4.3 Meteorological parameters . 12
5.4.4 Wheel and track parameters . 12
5.4.5 Combined roughness . 12
6 How to derive source terms . 12
6.1 General. 12
6.2 Procedure . 13
6.3 Directivity . 14
6.4 Distribution over source heights . 14
7 Measurement procedures . 14
7.1 General. 14
7.2 Rolling noise . 15
7.2.1 General. 15
7.2.2 Measurement steps . 16
7.2.3 Network and fleet roughness . 17
7.3 Traction and equipment noise . 18
7.3.1 General. 18
7.3.2 Source level for traction/equipment noise following EN ISO 3095 . 18
7.3.3 Source level for traction/equipment noise using statistical data collection . 18
7.3.4 Source separation . 18
7.4 Impact noise . 19
7.5 Curve squeal . 19
7.6 Bridge noise . 20
7.7 Braking noise. 21
oSIST prEN 17936:2023
prEN 17936:2022 (E)
7.7.1 General . 21
7.7.2 Source level for braking noise following EN ISO 3095 . 21
7.7.3 Source level for braking noise at arbitrary sites . 21
7.7.4 Source level for braking noise at speed . 21
7.8 Aerodynamic noise . 21
8 Sampling requirements . 22
8.1 Practical validity . 22
8.2 Site requirements and selection . 22
8.3 Train selection . 22
8.4 Train speeds . 22
8.5 Numbers of pass-bys . 23
9 Processing . 23
10 Uncertainties . 29
11 Reporting . 29
Annex A (informative) Methods to determine combined effective roughness . 31
A.1 General . 31
A.2 Direct method requiring track and vehicle possession . 31
A.3 Indirect method using rail vibration – trackside method . 31
A.4 Survey methods . 31
Annex B (informative) Calculation of apparent sound power from sound pressure . 33
B.1 Definition . 33
B.2 Calculation Method . 33
B.3 Calculation procedure. 34
B.4 Tabulated transfer functions for CNOSSOS for given track geometries and source-
receiver combinations . 34
Annex C (informative) Separation methods for rolling noise of vehicle and track . 59
C.1 Principle of separation . 59
C.2 Separation based on calculation . 59
C.3 Separation based on measurement . 60
C.4 Separation based on external reference . 60
Annex D (informative) Specific environments . 61
Annex E (informative) Transposition between train and track types . 62
Bibliography . 63
oSIST prEN 17936:2023
prEN 17936:2022 (E)
European foreword
This document (prEN 17936:2022) has been prepared by Technical Committee CEN/TC 256 “Railway
Applications”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
oSIST prEN 17936:2023
prEN 17936:2022 (E)
Introduction
In Europe various prediction methods for environmental noise exist. For noise mapping and planning of
railway lines, the prediction methods are enshrined in national or European legislation such as Directive
2015/996/EU (CNOSSOS). An integral aspect to ensure realistic results is to use valid input data.
Environmental noise prediction models consist of traffic noise source terms and a propagati
...
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