Conversion of existing railway source data to use CNOSSOS-EU
Monday 1 june, 2015, 17:40 - 18:00
0.3 Copenhagen (49)
The Environmental Noise Directive requires 28 countries to map the noise following a quite precise common noise assessment method that has just been adopted. Concerning railway noise, the challenge consists in using existing values to create new databases necessary to implement these new methods, by converting old data, instead of acquiring new ones. The main issues that are tackled in this article concern how to classify the railway vehicles correctly, and how to choose the right parameters; how to classify the right tracks and how to assign to each track the right parameters amongst those required by the new method. Some examples will be given on how existing data can be converted. The key parameters discussed are: rail and wheel roughness, vehicle type, wheel type, rail type, track type. As, following a recent work commissioned by the European Commission, conversion methodologies were developed, these conversion methodologies will be presented and explained.
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