All Sources (within agglomerations) Noise Contours Lnight Round 2

Data indicating the level of noise according to the strategic noise mapping of consolidated sources (roads, railways, airports and industry) within areas with a population of at least 100,000 people (agglomerations). Lnight indicates night time annual average noise level results in dB, where night is defined as 2300 - 0700. This data is a product of the strategic noise mapping analysis undertaken to meet the requirements of the Environmental Noise Directive (Directive 2002/49/EC).