Map Viewing Service (WMS) of the dataset: Strategic map of noise railway infrastructure SNCF: type C Lden

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 areas where the noise level exceeds 62 dB(A) for high-speed lines and 65 dB(A) for conventional track in Ln (level night, night indicator from 22h to 06h). They are called ‘C-type card’.
Limit values in dB(A) are defined by article L572-6 of the Environmental Code.
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号环境噪声评估与管理指令》，旨在通过可视化图形展示向公众告知噪声暴露水平。根据《环境法典》第R572-5条规定，CBS涵盖两类区域噪声地图：高速铁路线路对应区域的噪声级超过62 dB(A)，以及常规铁路线路在夜间时段（Ln，即夜间时段，指22时至次日6时）噪声级超过65 dB(A)的区域，此类地图被称为“C型卡片”。噪声限值（单位：dB(A)）由《环境法典》第L572-6条规定。针对瓦兹河谷省辖区内年列车通行量超过3万次的主要铁路基础设施所对应的CBS，已于2018年12月5日通过省法令获批。该类地图需每5年进行一次重新评估。