Noise Directive (DF4 and DF8): Strategic acoustic maps of the agglomeration — railway traffic, LN indicator, 2017

The collection contains acoustic maps for agglomerations with a population of more than 100 people. The data shall contain information on areas exposed to a specific sound level caused by noise generated by rail traffic, for the LN indicator (night noise indicator). The data was compiled by city presidents with a population of more than 100. The data were reported to the European Commission in 2017, in accordance with Directive 2002/49/EC (DF 4 and DF 8) — the Noise Directive. The data submitted to the European Commission were updated in October 2018. The maps are updated every 5 years. ‘LN’ (night noise indicator) means the long-term average sound level A, expressed in decibels (dB), determined in accordance with ISO 1996-2: 1987 in all seasons of the night (understood as a time interval from h. 12:00 p.m. 6.00) in the year (understood as the calendar year concerned for sound emissions and the average year for meteorological conditions); this indicator is used to determine LN sleep disorder. The data layer shall be representative of the regional annual situation.