Europe's Transition to Strategic Noise Mapping Under CNOSSOS-EU: Data Needs Assessment and Recommendations in the Context of Ireland

摘要

In cordance with Art. 6.2 of the Environmental Noise Directive (END), a Common Noise assessment method (CNOSSOS-EU) for road, railway, aircraft, and industrial noise will come into effect for the 2022 noise mapping round applicable to all EU nations. This paper identifies Ireland's key adaptation needs, with particular focus on road (CRTN) and rail (RMR 1996) source requirements. In the context of CRTN, CNOSSOS-EU introduces five categories of vehicle. If data gaps exist, default decomposition of heavy vehicles into alternative categories is recommended based on road type, dominant flow, or equal distribution. Other specific data needs and recommendations relate to road-surface gradient, roadside topography, and the requirement for detailed spatial information, particularly in relation to the location of intersections. In the context of RMR, practitioners should focus on track base and railhead roughness in the initial stages of CNOSSOS-EU implementation. In relation to brake type data, stock category assumptions will need to be made based on vehicle type, vintage, and examination of publicad y accessible photographs.