Simple download service (Atom) of the dataset: Strategic Map of Noise Railway Infrastructure RATP T5- Type Lden_hors95

The strategic noise maps (CBS) are derived from the European Directive 2002/49/EC on the assessment and management of environmental noise. They are intended to inform the public about the levels of exposure to noise through graphic representations. In accordance with article R572-5 of the Environmental Code, the CBS include maps of noise-exposed areas, called “type A card”, in Lden (level day evening night, day-evening-night noise indicator, 6am-18h, 18h-22h and 22h-6h). The maps show the noise-exposed areas using isophone curves ranging from 55 dB (A) to 75 dB (A) and above by 5 dB(A). The CBS for major railway infrastructure, whose annual traffic is more than 30,000 train crossings, by the deadline of the Val-d’Oise, were approved by prefectural decree of 5 December 2018. They must be reassessed every 5 years.战略噪声地图（CBS）源自欧盟《2002/49/EC环境噪声评估与管理指令》。此类地图旨在通过可视化图形向公众告知噪声暴露水平相关信息。 根据法国《环境法典》第R572-5条规定，CBS包含噪声暴露区域地图，即所谓的“A类图”，采用Lden（昼-晚-夜噪声指数，对应时段为6:00-18:00、18:00-22:00及22:00-6:00）作为评价指标。 该类地图通过等声级线划定噪声暴露区域，等声级范围为55分贝（A计权）至75分贝（A计权），且以5分贝（A计权）为间隔逐级递增。 针对年列车通行量超过3万次且需符合瓦勒德瓦兹省（Val-d’Oise）时限要求的境内主要铁路基础设施所编制的CBS，已于2018年12月5日经法国省政令批准。 此类地图需每5年进行一次重新评估。