Acoustics. Measurement of the influence of road surfaces on traffic noise - The close-proximity method Ingestion-build-143074 BS EN 4644-002:2016 Aerospace series

BS EN 4644-002:2016 Aerospace series

Seamless tubes

A requirement for the application of this document is that the recommendations should be used by appropriately trained and experienced personnel

designation HR 504A

Ease of installation

Acoustics. Measurement of the influence of road surfaces on traffic noise - The close-proximity method Ingestion-build-143074 BS EN 4644-002:2016 Aerospace series1 Scope This document specifies a method of evaluating different road surfaces with respect to their influence on traffic noise, under conditions when tyre road noise dominates. The interpretation of the results applies to free flowing traffic travelling on essentially level roads at constant speeds of 40 km h and upwards, in which cases tyre road noise is assumed to dominate (although in some countries it is possible that tyre road noise does not