data download service (WFS) from: Railways, noise chart type “a” index Ln (night)

Description

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 “a” map locates the noise-exposed areas using Ln (Level night) isophones in steps from 5 in 5 from 50 dB(A) to more than 70 dB(A). The Ln (Level night) is an indication of noise discomfort. DB(A) is a unit of measurement expressing a level of intensity (decibel) weighted according to the physiological characteristics of the human ear.


Access to the municipality is available in the “Location” tab on the left of the map.
Maximum consultation scale: 1/25 000 th


Only the documents annexed to the Orders are authentic


Card background: BD CARTO, SCAN 25, SCAN REGIONAL and SCAN 1000 ®© IGN
C_045_570000_LNA_Values_Id
C_045_569000_LNA_Values_Id
C_N_COMMUNE_BDC_045
C_045_590000_LNA_Values_Id

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download Unknown Open resource

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