Noise-exposed areas in Haute-Savoie (Ln)

Areas exposed to noise levels greater than 50 dB(A) along roads with an annual traffic of more than 3 million vehicles. These areas are delimited by isophone curves calculated according to the Ln indicator, with a step of 5 in 5 dB(A), for the drawing up of strategic noise maps along the road infrastructure of Haute-Savoie. LN is a noise level indicator for the night period (22h-6h). __Origin__ The data are produced and provided by the CETE de Lyon Department of Cities and Territories, Environment and Health Unit (Bernard MIEGE) and the ATMB and AREA motorway dealers. To facilitate data processing, the MapBasic national publication tool “agre_noisit.MBX” (developed by the Eastern Cete) was used. __Partner organisations__ DDT 74 (Departmental Directorate of the Territories of Upper Savoie) __Links annexes__ * [HTML view of metadata on the Internet](http://catalogue.geo-ide.developpement-durable.gouv.fr/catalogue/apps/search/?uuid=fr-120066022-jdd-060226a8-7c37-4fee-993f-133643a70daf) * [XML metadata view](http://catalogue.geo-ide.developpement-durable.gouv.fr/catalogue/srv/fre/xml_iso19139?uuid=fr-120066022-jdd-060226a8-7c37-4fee-993f-133643a70daf) * [access to the single download service of the game and associated documents](http://atom.geo-ide.developpement-durable.gouv.fr/atomMetadata/GetResourceDescription?id=ccbf0b00-6fe1-4ed9-a3ed-8e7cfb11644b&scope=INTERNET)