Noise in metropolitan areas - IED systems - level grid LNight - mapping 2022

The data includes the calculation results of the environmental noise mapping 2022 in the metropolitan areas in Bavaria. These are all cities in Bavaria with more than 100,000 inhabitants, i.e. Munich, Nuremberg, Augsburg, Fürth, Erlangen, Würzburg, Regensburg and Ingolstadt. In each metropolitan area, the noise from road traffic, from industrial and commercial facilities in accordance with Directive 2010/75/EU of 24.11.2010 on the integrated prevention and control of environmental pollution (Industrial Emissions Directive - IED Directive) and, where available, from tram and above-ground subway traffic recorded. The noise calculations are carried out in accordance with the "Calculation method for ambient noise from sources close to the ground (roads, railways, industry and commerce) (BUB)". The noise indices LDEN and LNight in dB(A) are used as a measure of general annoyance and as a measure of sleep disturbances. The level LDEN is an immission level averaged over 24 hours, which consists of the levels LDay, LEvening and LNight for the assessment times day (6:00 a.m. to 6:00 p.m.), evening (6:00 p.m. to 10:00 p.m.) and night (22 :00-6:00 a.m.) is determined. The increased sensitivity to noise during these times is taken into account by weighting factors of 5 dB(A) for the four-hour evening time and 10 dB(A) for the eight-hour night time. The layer describes the noise pollution from industrial plants in the metropolitan area expressed by the noise index LNight according to the EC environmental noise directive. According to the directive, only IED systems are considered.