Simple download service (Atom) of the dataset: Areas exposed to the noise of the departmental road 950 at night (Ln) in Melle en Deux-Sèvres

The European Directive on Strategic Noise Maps requires as a minimum the representation of the overall noise indicators Lden and Ln, for each source. These indicators correspond to the incident noise on the facades. The indicators represented are expressed in dB(A) and reflect a notion of overall discomfort or health risk.
The data represents areas exposed to land transport infrastructure noise at night (Ln) using isophone curves drawn in steps of 5 dB(A) starting at 50 dB(A).
The routes concerned is RD 950 going to Saintes on the commune of Melle.
The Ln is the average sound level that isolates the night period (22h-6h).
It can be associated with the risk of sleep disruption.
Articles L572-1 to 11 of the Environmental Code laying down various provisions for adaptation to Community law in the field of the environment and the implementing texts (Decree No 2006-361 of 24 March 2006, Decree of 4 April 2006 and Circular of 7 June 2007 on the drawing up of noise maps and plans for the prevention of environmental noise) provide for the indicators, the calculation methods to be used and the results
I'm waiting for you.

欧盟《战略噪声地图指令》（European Directive on Strategic Noise Maps）要求至少针对各噪声源，呈现整体噪声指标Lden与Ln，此类指标对应建筑立面的入射噪声。所采用的指标以dB(A)为计量单位，反映整体不适感或健康风险的相关概念。
本数据集针对夜间时段的陆地交通基础设施噪声影响区域，采用以50 dB(A)为起始值、步长为5 dB(A)的等声级线（isophone curves）进行绘制。
涉及的路段为梅勒（Melle）市镇境内通往圣特（Saintes）的RD 950号省道。
Ln为夜间时段（22时至次日6时）的等效声级，可与睡眠干扰风险建立关联。
《环境法典》第L572-1条至第L572-11条，以及为适配欧盟环境领域法律制定的实施细则（2006年3月24日第2006-361号政令、2006年4月4日政令及2007年6月7日关于编制噪声地图与环境噪声防治方案的通告），对上述噪声指标、所需采用的计算方法及最终成果作出了明确规定。