The CNOSSOS-EU method is the mandatory calculation method for all Member States in Europe for making strategic noise maps as defined in the European Noise Directive. Also, outside Europe this method is gaining interest as, compared to ISO 9613 and many other national methods, CNOSSOS is far more advanced, for example, supporting favorable and homogenous meteorological conditions. The CNOSSOS method also defines an open source model for roads and railways which means that you or a national authority can use a specific emission model of road traffic, road surfaces, trains and tracks. This is all handled with the new menu options for road and rail catalogues in iNoise V2024. iNoise V2024 includes the default EU catalogue for road and railway traffic.