Map visualisation service (WMS) of the dataset: Strategic Type C Noise Map — Night — Department of the North

The noise levels emitted by a given infrastructure during an average day are evaluated using numerical models producing isophone curves translated into noise zones, according to the index recommended for all modes of transport at European level, namely the Lden index and the Ln index. Strategic noise maps aggregate or translate these noise zones according to the type of strategic noise map, namely noise exposure maps, noise-affected areas, limit-value exceedance maps, and known or predictable noise level evolution maps.