1 Scope
2 Normative references
3 Definitions
4 Vehicle categories
5 General considerations
5.1 Driving conditions
5.2 Interpretation of results
6 Instrumentation
6.1 Instruments for acoustical measurement
6.2 Instrumentation for speed measurements
6.3 Meteorological instrumentation
7 Acoustical environment, meteorological conditions
and background noise
7.1 Test site
7.2 Meteorological conditions
7.3 Background noise
8 Procedure
8.1 Microphone positions
8.2 Number of measurements
8.3 Conditions of the vehicle
8.4 Operating conditions
8.5 Readings to be taken and reported values
8.6 Measurement uncertainty
9 Test report
Annex A: Measurement uncertainty
Annex B: Bibliography