Nuisance — Type A road noise zone, Lden index of the A85 motorway in Loir-et-Cher

Noise level areas describe a noise exposure situation based on a noise indicator or area affected by noise. They are mainly used for the preparation of strategic noise maps pursuant to Article R.572-5 of the Environmental Code. __Origin__ This layer covers the department of l'Orne (61). It is a composite data from layers of the same vintage (except the forest layer which dates back to 2000). It is made from the communal cutting of the BD-TOPO® from l'IGN. L' land cover is defined for each commune by successive integration on the \#x27; blank space of reference graphic layers according to the following order: 1°) BD-TOPO® of l'IGN©; 2°) BD-FORET® V1 of l'IGN© (on the #x27 rd; right-of-way of the vegetation layer of the BD-TOPO®, the non-forest vegetation being then crossed with the urban task built from the BD-TOPO® to estimate the artificial part); 3°) ASP agricultural RPG; 4°) Majic Parcellar of DGFiP. At the end of the process of integration, the remaining blank spaces are filled by the predominant adjoining land occupation. Thus, the layer is obtained from data whose validity scales and update dates are not always homogeneous. This aspect must be taken into account by the user when using it. However, this work makes it possible to obtain an admissible perception for reflections on the \#x27; evolution of the soil on a communal or supra-communal scale. __Partner organisations__ DDT Loir-et-Cher, COVADIS __Links annexes__ * [XML metadata view](http://ogc.geo-ide.developpement-durable.gouv.fr/csw/all-dataset?REQUEST=GetRecordById&SERVICE=CSW&VERSION=2.0.2&RESULTTYPE=results&elementSetName=full&TYPENAMES=gmd:MD_Metadata&OUTPUTSCHEMA=http://www.isotc211.org/2005/gmd&ID=fr-120066022-jdd-068749e6-b1cf-4d92-8c32-5e20eab4109e) * [interactive mapping](http://carto.geo-ide.application.developpement-durable.gouv.fr/481/OSCOM2013_R28.map) [See this page on geo.data.gouv.fr](https://geo.data.gouv.fr/fr/datasets/cc314898d9673da9cc028d9bb7d272d590bf3698)