Noise on main roads – Level grid LNight – mapping 2022

The data include the calculation results of ambient noise mapping in 2022 on the main roads outside the agglomerations in Bavaria. These are all motorways, federal and state roads, which, according to traffic census 2019, have a traffic load of more than 3 million vehicles per year. This corresponds to an average daily traffic (DTV) of more than 8,200 cars per day. 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 harassment or as a measure of sleep disturbances. The level LDEN is an immission level over 24 hours averaged from the levels Lday, Levening and LNight for the assessment times day (6:00-18:00), evening (18:00-22:00) and night (22:00-6:00 clock). 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 noise sensitivity during these times.

The layer represents the noise pollution on main roads expressed by the LNight noise index in accordance with the EC Ambient Noise Directive.