After the first round of EU strategic noise mapping is finished and action plans based on these noise maps are being developed, it becomes clear that the approaches taken to ensure the quality of calculated results do differ between Member States. In Germany comparison with measurement is precluded and test case calculations are the preferred way. However, in other Member States the comparison with measured data is mandatory. Furthermore, statistical approaches to ensure quality of calculations have been developed and are in the process of standardisation. The present paper illustrates specific aspects of QA in noise mapping on the basis of the experience gained in past projects.
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