Abstract
In Germany, several guidelines were developed to model the noise propagation
pathway. The study compares the guidelines DIN 18005, RLS-90 and
VDI 2714, all of which provide some kind of sound object line source
suited to model street traffic noise. Differences between those guidelines
are explained, and their effect on practical calculations is shown
in a real-world situation, National Road N4, in Arlon, Belgium. Calculated
results are compared to measurements made on critical points along
the road. The paper emphasises the understanding of the inner workings
of models. In order to avoid differences in calculated results due
to software design methods applied, all calculations are made using
one single commercially available simulation program. Additionally,
this allows for a test of guideline sensitivity to changes in input
parameters.
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