Information system of strategic noise maps and action plans - WFS

Downloaded from NSDI Geoportal - http://geoportal.nipp.hr/hr Strategic noise map is a basic noise map intended for a complete evaluation of the population's exposure to noise from different noise sources. The noise map is a representation of existing and predicted noise emission levels at locations within the observed area. The most common data contained in the noise map are the exceedance of the prescribed permitted values, the estimated number of people exposed to certain noise levels and the estimated number of apartments, schools, hospitals exposed to certain noise indicator values in the observed area. Strategic noise maps show noise levels in accordance with harmonised noise indicators (Lden, Lday, Levening, Lnight) over the total number of inhabitants and/or apartments exposed to noise of a certain level. Noise maps are made using computer methods of calculating emissions and noise emitted from known noise sources in geographical space. The noise sources taken into account in the strategic noise maps are air traffic noise, road traffic noise, rail traffic noise and noise from industrial installations. The noise of each type of source is processed separately, and the obtained results are summed up and compiled into a map of the total noise levels of the observed area. Therefore, the strategic noise map is a useful instrument in environmental noise management, enables the development of action plans to lower noise levels from existing sources, enables more efficient spatial planning, planning of the protection of existing spaces from noise sources and the implementation of acoustic planning.