Noise on main roads - Level grid LDEN - Mapping 2022

The data include the calculation results of the 2022 environmental noise mapping on the main roads outside the agglomerations in Bavaria. These are all motorways, federal and state roads, which according to the traffic census 2019 have a traffic load of more than 3 million motor vehicles per year. This corresponds to an average daily traffic volume (DTV) of more than 8,200 vehicles per day. The noise calculations are carried out in accordance with the "Calculation method for ambient noise from ground-level sources (roads, railways, industry and commerce) (BUB)".
The noise indices LDEN and LNight in dB(A) are used as a measure of general annoyance or as a measure of sleep disturbances. The LDEN level is an emission level averaged over 24 hours, which is determined from the LDay, LEvening and LNight levels for the assessment times day (6:00-18:00), evening (18:00-22:00) and night (22:00-6:00). Weight factors of 5 dB(A) for the four-hour evening time and 10 dB(A) for the eight-hour night time take into account the increased sensitivity to noise during these times.
The layer represents the noise pollution on main roads expressed by the noise index LDEN according to the EC Environmental Noise Directive.