What is BS EN 1793-2 - Intrinsic characteristics of airborne sound insulation of road traffic noise reducing devices about?
BS EN 1793-2 discusses characteristics of road traffic noise reducing devices.
BS EN 1793-2 specifies the laboratory method for measuring the airborne sound insulation performance of road traffic noise reducing devices in reverberant conditions.
Note1: BS EN 1793-2 covers the assessment of the intrinsic performance of barriers that can be assembled inside the testing facility described in EN ISO 10140-2 and EN ISO 10140-4.
Note2: BS EN 1793-2 is not intended for the determination of the intrinsic characteristics of airborne sound insulation of noise-reducing devices to be installed on roads in non-reverberant conditions.
Who is BS EN 1793-2 - Intrinsic characteristics of airborne sound insulation of road traffic noise reducing devices for?
BS EN 1793-2 on airborne sound is useful for:
- Road traffic noise reducing devices manufacturers
- Transportation department
- Road safety authority
- Maintenance personnel
Why should you use BS EN 1793-2 - Intrinsic characteristics of airborne sound insulation of road traffic noise reducing devices?
Noise reducing devices alongside roads should provide adequate sound insulation so that sound transmitted through the device is not significant compared with the sound diffracted over the top.
BS EN 1793-2 specifies a test method for qualifying the intrinsic airborne sound insulation performance for noise reducing devices designed for roads in reverberant conditions, e.g., inside tunnels or deep trenches, or under covers.
The overall purpose of BS EN 1793-2 provides the test method that allow the intrinsic airborne sound insulation performance of the device to be measured; the resulting rating should aid the selection of devices for reverberant roadside applications.
What is changed since the last update?
BS EN 1793-2:2018 supersedes BS EN 1793‑2:2012, which is withdrawn.
BS EN 1793-2:2018 includes some technical changes with respect to BS EN 1793‑2:2012.
These include:
- The declaration of measurement uncertainty and the related confidence level is now mandatory
- The categories of single number rating have been removed from Annex A. The performance of the noise reducing device is, from now on, only to be reported in terms of the numeric values of the single number rating