What is BS EN 16272-3-1 - railway noise spectrum testing about?  
Rail traffic noise is one of the main causes of environmental pollution generated by the railway system. One solution is noise barriers that block the direct path of sound waves from surrounding areas.
BS EN 16272-3-1 is a European Standard that covers technical specifications for the determination of airborne sound propagation under diffuse field conditions in noise barriers, ensuring barrier performance and noise reduction in railway applications.
BS EN 16272-3-1 is the third part of the acoustic performance test methods multi-series for railway track applications. BS EN 16272-3-1 specifies a normalized railway noise spectrum for the evaluation and assessment of the acoustic performance of devices designed to reduce airborne railway noise near railways.
Note: All noise reducing devices that differ from noise barriers and related devices acting on airborne sound propagation, e.g., devices for attenuation of ground-borne vibration and onboard devices, are out of the scope of BS EN 16272-3-1.
Who is BS EN 16272-3-1 - railway noise spectrum testing for? 
BS EN 16272-3-1 on railway sound barrier testing is relevant to manufacturers and suppliers of noise barriers to the railway authorities for installation. BS EN 16272-3-1 is specifically useful to their design and product innovation teams for testing the effectiveness of the new products that they design. BS EN 16272-3-1 is useful for:
- Manufacturers and suppliers of noise barriers
- Product development/innovation teams
- Quality control teams
- Contractors
- Construction / civil engineers
- Railway management / maintenance authorities
- Health and safety inspection authorities
- Mechanical engineers
Why should you use BS EN 16272-3-1- railway noise spectrum testing?  
BS EN 16272-3-1 is to be read in conjunction with EN 16272-1 and EN 16272-2 and is applied only to situations as described in those documents (diffuse sound field).
As the two main intrinsic acoustic characteristics of noise barriers and related devices acting on airborne sound propagation in a diffuse sound field, sound absorption and airborne sound insulation are frequency-dependent; and there is a need to define a reference railway noise spectrum for test purposes.
BS EN 16272-3-1 defines the basic properties of railway noise measured at the rail trackside in terms of a characteristic normalized railway noise spectrum which is needed to evaluate single-number ratings of noise barriers and related devices acting on airborne sound propagation in reverberant conditions, e.g., inside tunnels or deep trenches.
The normalized railway noise spectrum under BS EN 16272-3-1 is used to assess the acoustic performance of noise barriers and related devices acting on airborne sound propagation near railways.
The adoption of BS EN 16272-3-1 helps to minimize risks to adjacent premises, or to rail users in confined corridors, ensuring the quality, performance, and longevity of noise barriers and related devices in railway applications.  Effective noise barriers contribute to quality of life by mitigating hearing loss risks for those living or working around railway tracks.
