Foreword

1Scope

2Normative references

3Terms and definitions

4Instrumentation and calibration

4.1Instrumentation

4.2Calibration

5Measurement positions

5.1Division of the unit into areas

5.1.1General

5.1.2Definition of area types

5.1.3Definition of area acoustics

5.1.4Selection of areas to be assessed

5.2Measurement positions

5.3Measurement height

5.3.1Seating position

5.3.2Standing position

5.3.3Lying position

5.3.4Driving position

6Stationary test

6.1General

6.2Environmental conditions

6.2.1Acoustical environment

6.2.2Meteorological conditions

6.2.3Background sound pressure level

6.3Track conditions

6.4Vehicle conditions

6.4.1General

6.4.2Normal operating conditions

6.4.3Additional operating conditions

6.5Measured quantities

6.6Test procedure

6.7Data processing

6.7.1Standard processing

6.7.2Additional processing

7Testing in cabs when sounding an external warning horn

7.1Environmental conditions

7.1.1Acoustical environment

7.1.2Meteorological conditions

7.1.3Background sound pressure level

7.2Track conditions

7.3Vehicle conditions

7.4Measured quantities

7.5Test procedure

7.6Data processing

7.6.1Standard processing

7.6.2Additional processing

8Constant speed test

8.1General

8.2Environmental conditions

8.2.1Acoustical environment

8.2.2Meteorological conditions

8.2.3Background sound pressure level

8.3Track conditions

8.3.1General

8.3.2Track design

8.3.3Track superstructure

8.3.4Track quality

8.3.5Rail roughness and track dynamic properties

8.3.6Special conditions

8.4Vehicle conditions

8.4.1General

8.4.2Normal operating conditions

8.4.3Occupancy and load

8.4.4Wheel tread conditioning

8.4.5Additional conditions

8.5Measured quantities

8.6Test procedure

8.6.1General

8.6.2Test speeds

8.6.3Measurement time intervals

8.7Data processing

8.7.1Standard processing

8.7.2Additional processing

9Acceleration from stand-still test and deceleration to stand-still test

9.1General

9.2Environmental conditions

9.2.1Acoustical environment

9.2.2Meteorological conditions

9.2.3Background sound pressure level

9.3Track conditions

9.4Vehicle conditions

9.4.1General

9.4.2Normal operating conditions

9.4.3Occupancy and load

9.4.3.1Acceleration

9.4.3.2Deceleration

9.4.4Wheel tread conditions

9.5Test procedure for the acceleration test

9.6Test procedure for the deceleration test

9.7Maximum level method

9.7.1Measured quantities

9.7.2Data processing

9.8Averaged level method

9.8.1Measured quantity

9.8.2Data processing

10Quality of the measurements

10.1Deviations from the requirements

10.2Positional tolerances

10.3Measurement spread

10.4Measurement uncertainties

11Test report

Annex AGuidance on the definition and reporting of vehicle conditions (informative)

Annex BMethod to characterize the impulsive character of the noise (informative)

Annex CAcoustic track characteristics (normative)

C.1General

C.2Default specifications

C.2.1Rail roughness of the test track

C.2.2Dynamic properties of the test track

C.3Evaluation of the acoustic track characteristics

C.3.1General

C.3.2Direct measurement

C.3.3Extension of the test section based on indirect assessment

C.4Test procedure

Annex DSpecific environments (informative)

D.1General

D.2Tracks others than the standard track type

D.2.1Tunnels

D.2.2Elevated track (viaduct)

D.2.3Stations

D.3Environmental conditions

D.3.1General

D.3.2Acoustical environment

D.3.3Meteorological conditions

D.3.4Background sound pressure level

D.3.5Track conditions

D.4Test procedure

Annex EQuantification of measurement uncertainties according to (informative)

E.1General

E.2Mathematical model

E.3Determination of the standard uncertainties

E.4Determination of the combined standard uncertainty

E.5Determination of the expanded uncertainty

E.6Example

Bibliography