BS EN ISO 3095:2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Instrumentation and calibration
5 Stationary test
6 Constant speed test
7 Acceleration test from standstill
8 Braking test
9 Quality of the measurements
10 Test report
Annex A (normative) - Method to characterize the
        impulsive character of the noise
Annex B (normative) - Tests at constant speed - Special
        cases
Annex C (normative) - Method to assess acceptable small
        deviations from acoustic rail roughness requirements
Annex D (informative) - Guidance for light rail vehicles
        measurement
Annex E (informative) - Comparability of test situations
        in terms of acoustic rail roughness
Annex F (informative) - Additional measurements
Annex G (informative) - Quantification of measurement
        uncertainties according to ISO/IEC Guide 98-3:2008
Bibliography

Defines measurement methods and conditions to obtain reproducible and comparable exterior noise emission levels and spectra for all kinds of vehicles operating on rails or other types of fixed track, hereinafter conventionally called "unit".

This International Standard specifies measurement methods and conditions to obtain reproducible and comparable exterior noise emission levels and spectra for all kinds of vehicles operating on rails or other types of fixed track, hereinafter conventionally called “unit”.

This International Standard is applicable to type testing of units. It does not include all the instructions to characterize the noise emission of the other infrastructure related sources (bridges, crossings, switching, impact noise, curving noise, etc.).

This International Standard is not applicable to:

• the noise emission of track maintenance units while working;

• environmental impact assessment;

• noise immission assessment;

• guided buses;

• warning signal noise.

The results may be used, for example:

• to characterize the exterior noise emitted by units;

• to compare the noise emission of various units on a particular track section;

• to collect basic source data for units.

NOTE 1 The type testing procedures specified in this International Standard are of engineering grade (grade2), that is the preferred one for noise declaration purposes, as defined in ISO12001. If test conditions (e.g. vehicle and/or track conditions, measuring conditions) are relaxed (e.g. as done for trackside monitoring of in-service trains), then the results are no longer of engineering grade.

NOTE 2 The procedures specified for accelerating and decelerating tests are of survey grade, see ISO12001.

NOTE 3 Additional guidance is provided in Annex D for measurements in the specific case of light rail vehicles.