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BSI BS EN 1793-5:2016

Road traffic noise reducing devices. Test method for determining the acoustic performance -- Intrinsic characteristics. Sound absorption under direct sound field conditions
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BSI BS EN 1793-5:2016

Road traffic noise reducing devices. Test method for determining the acoustic performance -- Intrinsic characteristics. Sound absorption under direct sound field conditions

PUBLISH DATE 2018
PAGES 62
BSI BS EN 1793-5:2016

This European Standard describes a test method for measuring a quantity representative of the intrinsic characteristics of sound reflection from road noise reducing devices: the reflection index.

The test method is intended for the following applications:

  • determination of the intrinsic characteristics of sound reflection of noise reducing devices to be installed along roads, to be measured either on typical installations alongside roads or on a relevant sample section;

  • determination of the in situ intrinsic characteristics of sound reflection of noise reducing devices in actual use;

  • comparison of design specifications with actual performance data after the completion of the construction work;

  • verification of the long term performance of noise reducing devices (with a repeated application of the method).

The test method is not intended for the following applications:

  • determination of the intrinsic characteristics of sound reflection of noise reducing devices to be installed in reverberant conditions, e.g. inside tunnels or deep trenches.

Results are expressed as a function of frequency, in one-third octave bands between 100 Hz and 5 kHz. If it is not possible to get valid measurements results over the whole frequency range indicated, the results should be given in a restricted frequency range and the reasons of the restriction(s) should be clearly reported.

SDO BSI: British Standards Institution
Document Number EN 1793-5
Publication Date Aug. 14, 2018
Language en - English
Page Count 62
Revision Level
Supercedes
Committee B/509/6
Publish Date Document Id Type View
Jan. 13, 2026 BS EN 1793-5:2025 Revision
April 30, 2016 BS EN 1793-5:2016 Revision
Aug. 14, 2018 BS EN 1793-5:2016 Consolidated