Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Instrumentation
6 Acoustic environment, meteorological conditions,
and background noise
7 Test procedures
8 Test report
Annex A (informative) - Information on development
of ISO 16254
Annex B (informative) - Development of frequency shift
information
Annex C (informative) - Relevance of objective acoustic
data to pedestrian safety
Annex D (informative) - Measurement uncertainty - Framework
for analysis according to ISO/IEC Guide 98-3 (GUM)
Annex E (normative) - Testing requirements for reduced
uncertainty
Annex F (informative) - Frequency identification of tones
using the fast Fourier transformation
Annex G (informative) - Flowchart of the procedure for
measurement and reporting of background noise
Annex H (informative) - Flowchart for the procedure to correct
A-weighted sound pressure levels
Annex I (informative) - Flowchart for the procedure to report
A-weighted one-third-octave-band sound pressure levels
Bibliography