Description

The way of entering the base data, in the CNOSSOS method, is quite different from what
happened with the SRMII method, for the rail traffic noise modelling. There are some “conversion”
guidelines from base data associated with the SRMII method to base data associated with the
CNOSSOS method. This paper compares the results obtained with the SRMII method and with
the CNOSSOS method, using the “conversion” guidelines, and also compares these results with
some in situ measurements. Thus, some difficulties in rail traffic noise modelling are pointed out,
and some associated guidelines are presented.