oSIST prEN ISO 3381:2019

Railway applications - Acoustics - Noise measurement inside railbound vehicles (ISO/DIS 3381:2019)

2020-12-22: Decision 31/2020 taken by CEN/TC 256 on 2020-12-18: Extension of dow; dow=dav + 36 months

Bahnanwendungen - Akustik - Geräuschmessungen in spurgebundenen Fahrzeugen (ISO/DIS 3381:2019)

Applications ferroviaires - Acoustique - Mesurage du bruit à l'intérieur des véhicules circulant sur rails (ISO/DIS 3381:2019)

Železniške naprave - Akustika - Merjenje hrupa v tirnih vozilih (ISO/DIS 3381:2019)

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 3381:2019
01-december-2019

Železniške naprave - Akustika - Merjenje hrupa v tirnih vozilih (ISO/DIS 3381:2019)

Railway applications - Acoustics - Noise measurement inside railbound vehicles
(ISO/DIS 3381:2019)
Bahnanwendungen - Akustik - Geräuschmessungen in spurgebundenen Fahrzeugen
(ISO/DIS 3381:2019)

Applications ferroviaires - Acoustique - Mesurage du bruit à l'intérieur des véhicules

circulant sur rails (ISO/DIS 3381:2019)
Ta slovenski standard je istoveten z: prEN ISO 3381
ICS:
17.140.30 Emisija hrupa transportnih Noise emitted by means of
sredstev transport
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
oSIST prEN ISO 3381:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 3381:2019
---------------------- Page: 2 ----------------------
oSIST prEN ISO 3381:2019
DRAFT INTERNATIONAL STANDARD
ISO/DIS 3381
ISO/TC 43/SC 1 Secretariat: DIN
Voting begins on: Voting terminates on:
2019-10-02 2019-12-25
Railway applications — Acoustics — Noise measurement
inside railbound vehicles

Applications ferroviaires — Acoustique — Mesurage du bruit à l'intérieur des véhicules circulant sur rails

ICS: 45.020; 17.140.30
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 3381:2019(E)
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. ISO 2019
---------------------- Page: 3 ----------------------
oSIST prEN ISO 3381:2019
ISO/DIS 3381:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 3381:2019
ISO/DIS 3381:2019(E)
Contents Page

European foreword .............................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 2

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Instrumentation and calibration ......................................................................................................................................................... 4

4.1 Instrumentation ..................................................................................................................................................................................... 4

4.2 Calibration .................................................................................................................................................................................................. 4

5 Measurement positions ................................................................................................................................................................................. 4

5.1 Definition of areas ................................................................................................................................................................................ 4

5.1.1 Definition of area types .............................................................................................................................................. 4

5.1.2 Division of the unit into areas............................................................................................................................... 4

5.1.3 Selection of areas to be assessed ....................................................................................................................... 5

5.2 Measurement positions ................................................................................................................................................................... 6

5.3 Measurement height .......................................................................................................................................................................... 6

5.3.1 Seating position ................................................................................................................................................................ 6

5.3.2 Standing position ...................................................................... ....................................................................................... 7

5.3.3 Lying position ..................................................................................................................................................................... 7

5.3.4 Driving position ................................................................................................................................................................ 7

6 Stationary test ......................................................................................................................................................................................................... 8

6.1 General ........................................................................................................................................................................................................... 8

6.2 Environmental conditions ............................................................................................................................................................. 9

6.2.1 Acoustical environment ............................................................................................................................................. 9

6.2.2 Meteorological conditions ....................................................................................................................................... 9

6.2.3 Background sound pressure level ..................................................................................................................... 9

6.2.4 Track conditions ............................................................................................................................................................... 9

6.3 Vehicle conditions ................................................................................................................................................................................ 9

6.3.1 General...................................................................................................................................................................................... 9

6.3.2 Normal operating conditions .............................................................................................................................10

6.3.3 Additional operating conditions......................................................................................................................10

6.4 Measured quantities ........................................................................................................................................................................10

6.5 Test procedure ......................................................................................................................................................................................10

6.6 Data processing ...................................................................................................................................................................................11

6.6.1 Standard processing ..................................................................................................................................................11

6.6.2 Additional processing ...............................................................................................................................................11

7 Testing in cabs when sounding an external warning horn ....................................................................................12

7.1 Environmental conditions ..........................................................................................................................................................12

7.1.1 Acoustical environment ..........................................................................................................................................12

7.1.2 Meteorological conditions ....................................................................................................................................12

7.1.3 Background sound pressure level ..................................................................................................................12

7.2 Track conditions .................................................................................................................................................................................12

7.3 Vehicle conditions .............................................................................................................................................................................12

7.4 Measured quantities ........................................................................................................................................................................12

7.5 Test procedure ......................................................................................................................................................................................12

7.6 Data processing ...................................................................................................................................................................................13

7.6.1 Standard processing ..................................................................................................................................................13

7.6.2 Additional processing ...............................................................................................................................................13

8 Constant Speed Test .......................................................................................................................................................................................13

8.1 General ........................................................................................................................................................................................................13

8.2 Environmental Conditions .........................................................................................................................................................13

8.2.1 Acoustical Environment .........................................................................................................................................13

8.2.2 Meteorological Conditions ...................................................................................................................................14

8.2.3 Background Sound Pressure Level ................................................................................................................14

© ISO 2019 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 3381:2019
ISO/DIS 3381:2019(E)

8.3 Track Conditions.................................................................................................................................................................................14

8.3.1 General...................................................................................................................................................................................14

8.3.2 Track design of the Line ..........................................................................................................................................14

8.3.3 Track Superstructure ................................................................................................................................................15

8.3.4 Track Quality ....................................................................................................................................................................15

8.3.5 Rail Roughness & Track dynamic properties .......................................................................................15

8.3.6 Special conditions ........................................................................................................................................................15

8.4 Vehicle Conditions .............................................................................................................................................................................15

8.4.1 General...................................................................................................................................................................................15

8.4.2 Normal operating conditions .............................................................................................................................16

8.4.3 Occupancy and Load ..................................................................................................................................................16

8.4.4 Wheel Tread Conditioning ....................................................................................................................................17

8.4.5 Additional conditions ...............................................................................................................................................17

8.5 Measured Quantities .......................................................................................................................................................................18

8.6 Test Procedure......................................................................................................................................................................................18

8.6.1 General...................................................................................................................................................................................18

8.6.2 Test Speeds ........................................................................................................................................................................18

8.6.3 Measurement Time Intervals .............................................................................................................................18

8.7 Data Processing ...................................................................................................................................................................................18

8.7.1 Standard Processing ..................................................................................................................................................18

8.7.2 Additional processing ...............................................................................................................................................19

9 Acceleration from Stand-still test and deceleration to stand-still test .....................................................20

9.1 General ........................................................................................................................................................................................................20

9.2 Environmental conditions ..........................................................................................................................................................20

9.2.1 Acoustical environment ..........................................................................................................................................20

9.2.2 Meteorological conditions ....................................................................................................................................20

9.2.3 Background sound pressure level ..................................................................................................................20

9.3 Track conditions .................................................................................................................................................................................21

9.4 Vehicle conditions .............................................................................................................................................................................21

9.4.1 General...................................................................................................................................................................................21

9.4.2 Normal operating conditions .............................................................................................................................21

9.4.3 Occupancy and Load ..................................................................................................................................................22

9.4.4 Wheel-tread conditions ..........................................................................................................................................22

9.5 Test procedure for the acceleration test ........................................................................................................................22

9.6 Test procedure for the deceleration test ........................................................................................................................22

9.7 Maximum level method ................................................................................................................................................................23

9.7.1 Measured quantities ..................................................................................................................................................23

9.7.2 Data processing ..............................................................................................................................................................23

9.8 Averaged level method ..................................................................................................................................................................23

9.8.1 Measured quantity ......................................................................................................................................................23

9.8.2 Data processing ..............................................................................................................................................................24

10 Quality of the measurements ...............................................................................................................................................................24

10.1 Deviations from the requirements ......................................................................................................................................24

10.2 Positional tolerances .......................................................................................................................................................................24

10.3 Measurement spread ......................................................................................................................................................................25

10.4 Measurement uncertainties ......................................................................................................................................................25

11 Test Report ...............................................................................................................................................................................................................25

Annex A (informative) Guidance on the definition and reporting of vehicle conditions ............................27

Annex B (informative) Method to characterize the impulsive character of the noise ....................................28

Annex C (normative) Acoustic Track Characteristics .......................................................................................................................29

Annex D (informative) Specific environments ........................................................................................................................................33

Annex E (informative) Quantification of measurement uncertainties according to

ISO/IEC Guide 98-3:2008 ..........................................................................................................................................................................36

iv © ISO 2019 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 3381:2019
ISO/DIS 3381:2019(E)

Annex ZA (informative) Relationship between this European Standard and the Essential

Requirements of Directive (EU) 2016/797 aimed to be covered ....................................................................41

Bibliography .............................................................................................................................................................................................................................43

© ISO 2019 – All rights reserved v
---------------------- Page: 7 ----------------------
oSIST prEN ISO 3381:2019
ISO/DIS 3381:2019(E)
European foreword

This document (prEN ISO 3381:2019) 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.
This document will supersede EN ISO 3381:2011.
The main changes with respect to the previous edition are listed below:
— modular structure;

— assessment of the reference track section with reference to EN 15610 (rail roughness) and EN 15461

(track decay rates);

— introduction of an improved indirect assessment of the track acoustic characteristics;

— new Cabnoise specification;
— improved selection process of the measurement positions;

— improved specifications of the vehicle conditions for the different types of tests;

— an improved assessment of the tonality.
vi © ISO 2019 – All rights reserved
---------------------- Page: 8 ----------------------
oSIST prEN ISO 3381:2019
DRAFT INTERNATIONAL STANDARD ISO/DIS 3381:2019(E)
Railway applications — Acoustics — Noise measurement
inside railbound vehicles
1 Scope

This document specifies the measurement method and conditions to obtain reproducible and

comparable noise levels on-board all kinds of vehicles operating on rails or other types of fixed track,

hereinafter conventionally called “unit”, except for track maintenance vehicles in working modes.

NOTE For constant speed tests the concept of “comparability” needs further caution, as this term is used

as well to classify the measurement precision grade related to track roughness and track decay rates given in

this document. Nevertheless, the measurement may be acceptable as type test on a track of controlled acoustic

quality, but not compliant to the track specification given in this document.

This document is applicable to type testing. It does not include all the instructions to carry out

monitoring testing or evaluation of noise exposure of passengers or drivers over a whole journey.

This document is not applicable to guided buses.
It provides measurement procedures for vehicle interior noise:
— when the vehicle is moving at constant speed;
— when the vehicle is stationary;
— when the vehicle is accelerating or decelerating;
— in the driver's cab when an external warning horn is sounding.

NOTE In general, a vehicle type acceptance test would require only a selected subset of these tests to be

performed.
It does not provide measurement procedures for:
— audibility or intelligibility of any audible signals;
— assessment of warning devices other than warning horns.

The assessment of noise exposure of train crew due to operational conditions is not in the scope of this

document.
The results may be used, for example:
— to characterise the noise inside these units;
— to compare the internal noise of various units on a particular track section;
— to collect basic source data for units.

The test procedures specified in this document are of engineering grade (grade 2), that is the preferred

one for noise declaration purposes, as defined in EN ISO 12001. If test conditions are relaxed for

example as done for monitoring of in-service trains, then the results are no longer of engineering grade.

The procedures specified for accelerating and decelerating tests are of survey grade.

© ISO 2019 – All rights reserved 1
---------------------- Page: 9 ----------------------
oSIST prEN ISO 3381:2019
ISO/DIS 3381:2019(E)
2 Normative references

The following referenced documents are indispensable for the application 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.

DIN 45681:2005, Acoustics — Determination of tonal components of noise and determination of a tone

adjustment for the assessment of noise immissions

EN 15461, Railway applications — Noise emission — Characterization of the dynamic properties of track

sections for pass by noise measurements

EN 15610:2019, Railway applications — Noise emission — Rail roughness measurement related to rolling

noise generation

EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories

ISO 12001, Acoustics — Noise emitted by machinery and equipment — Rules for the drafting and

presentation of a noise test code

ISO 1996-1, Acoustics — Description, measurement and assessment of environmental noise — Part 1: Basic

quantities and assessment procedures

ISO 1996-2:2017, Acoustics — Description, measurement and assessment of environmental noise — Part 2:

Determination of sound pressure levels
IEC 60942, Electroacoustics — Sound calibrators
IEC 61260, Electroacoustics — Octave-band and fractional-octave-band filters
IEC 61672-1, Electroacoustics — Sound level meters — Part 1: Specifications

IEC 61672-2, Electroacoustics — Sound level meters — Part 2: Pattern evaluation tests

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:

— IEC Electropedia: available at http: //www .electropedia .org/
— ISO Online browsing platform: available at http: //www .iso .org/obp
3.1
unit

generic term used to name the rolling stock which is subject to the application of this document

Note 1 to entry: A unit may be composed of several motored or unmotored vehicles, or cars.

3.2
type test for noise emission of railbound units

measurement performed to prove that, or to check if, a unit delivered by the manufacturer complies

with the noise specifications
3.3
acoustic roughness
r(x)

variation of the height of the rail running surface associated with rolling noise excitation, expressed as

a function of distance x along the rail
[SOURCE: EN 15610]
2 © ISO 2019 – All rights reserved
---------------------- Page: 10 ----------------------
oSIST prEN ISO 3381:2019
ISO/DIS 3381:2019(E)
3.4
acoustic roughness spectrum
amplitude of the acoustic roughness expressed as a function of the wavelength λ
3.5
track decay rate

rate of attenuation of vibration amplitude of either vertical or lateral bending wave motion in the rail as

a function of the distance along the rail

Note 1 to entry: It is represented by a one-third octave spectrum of values expressed in decibels per metre

(dB/m) representing attenuation over distance.
[SOURCE: EN 15461]
3.6
Acoustic Track Characteristics (ATC)

characteristics of the track that are defined in terms of acoustic rail roughness and track decay rates

3.7
test section

specific section of track that is associated with a particular set of measurements

3.8
reference track section

portion of track on which the track decay rates and the acoustic roughness levels are controlled

Note 1 to entry: On this section of track, decay rates and acoust
...