The required accuracy in the new Common Noise Assessment Method
Monday 1 june, 2015, 17:00 - 17:20
0.3 Copenhagen (49)
In the context of the new annex II of Directive 2002/49/EC, concerning Common noise assessment methods for the calculation of environmental noise, the Member States agreed to define a minimum accuracy that needs to be ensured while performing noise mapping. While the definition seems short and clear, the implementation may be sometimes simple sometimes difficult. The accuracy required is of +/- 2dB. In the context of the definition of the accuracy, several resources are available in literature to define accuracy in very specific cases, but this information needs to be combined to verify if the requirement of the new law is fulfilled. This paper will discuss pros and cons of approaches to assess accuracy of the input values for road and railways, and will as well outline benefits of having a better control on the source definition. This act introduces for the first time in the context of the environmental noise mapping, a legal requirement to address accuracy of the calculations, and define such accuracy. This is therefore a milestone in the evolution of the noise maps.
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