data download service (WFS) from: Strategic noise map (first deadline) — Type C map — Ln 65 (for railways)

The strategic noise maps, in accordance with European Directive 2002/49/EC of 25 June 2002, allow for the overall assessment of exposure to noise in the environment. They allow a representation of noise levels, but also to enumerate the exposed population, quantify the nuisances, and then draw up action plans. The type “c” map represents the isophone curves of the areas where the Ln exceeds the value of 65 dB(A) for railways. LN 65 dB(A): zone where Ln (Level night) exceeds 65 dB(A) DB(A) is a unit of measurement expressing a level of intensity (decibel) weighted according to the physiological characteristics of the human ear. Reference: prefectural Decree of 25 May 2011 MAXIMUM CONSULTATION SCALE: 1/25 000 th C_COMMUNE C_COMMUNES_IMPACTEES_C_LN65 C_COMMUNE_Labels C_DEPARTMENT C_L_LIMITE_Ln_65_S_037_Values_dBInf