19/30400897 DC - BS EN ISO 3381. Railway applications. Acoustics. Noise measurement inside railbound vehicles

19/30400897 DC

BS EN ISO 3381. Railway applications. Acoustics. Noise measurement inside railbound vehicles

Status : Current, Draft for public comment   Published : October 2019



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.


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.


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.

Standard Number19/30400897 DC
TitleBS EN ISO 3381. Railway applications. Acoustics. Noise measurement inside railbound vehicles
StatusCurrent, Draft for public comment
Publication Date11 October 2019
Normative References(Required to achieve compliance to this standard)EN ISO/IEC 17025, IEC 60942, IEC 61260, DIN 45681:2005, ISO 1996-1, EN 15461, IEC 61672-2, IEC 61672-1, ISO 12001, EN 15610:2019, ISO 1996-2:2017
Informative References(Provided for Information)ISO/IEC Guide 98-3:2008, ISO 266, ISO 3095
International RelationshipsISO/DIS 3381
Draft Expiry Date25 November 2019
DescriptorsRailways, Sound intensity, Railway equipment, Acoustic measurement, Railway vehicles, Test equipment, Internal, Testing conditions, Wave physics, Noise (environmental), Acoustics
Title in FrenchApplications ferroviaires — Acoustique — Mesurage du bruit à l'intérieur des véhicules circulant sur rails
File Size3.058 MB
NotesWarning: this draft is not current beyond its expiry date for comments.

 Your basket
Your basket is empty

Multi-user access to over 3,500 medical device standards, regulations, expert commentaries and other documents


The faster, easier way to work with standards

Worldwide Standards
We can source any standard from anywhere in the world

Develop a PAS

Develop a fast-track standardization document in 9-12 months