Noise on major roads — noise protection equipment

The data include the calculation results of the 2017 environmental noise mapping on the main roads in Bavaria. Outside agglomerations, these are all motorways, federal roads and state roads which, according to the 2015 Traffic Census, 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 cars per day. Within agglomerations, these are all roads with a DTV of more than 8 200 cars per day. The noise indices LDEN and LNight in dB(A) are used as a measure of general nuisance and as a measure of sleep disturbance respectively. The LDEN level is an immission level averaged over 24 hours, measured 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). By weighting factors of 5 dB(A) for the 4-hour evening period and 10 dB(A) for the eight-hour night time, the increased noise sensitivity in these times is taken into account. The Layer represents the noise protection equipment on the main roads. These may be noise barriers, walls, wall combinations or incision layers.