Simple download service (Atom) of the dataset: Noise-exposed areas in Haute-Savoie (Ln)

Areas exposed to noise levels above 50 dB(A) along roads with annual traffic exceeding 3 million vehicles. These areas are bounded 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). An extraction for a route may be produced by DDT 74 by sending a message to the contact.年车流量超过300万辆的道路沿线，噪声级超过50 dB(A)的区域。 为编制上萨瓦省道路基础设施沿线的战略噪声地图，上述区域由依据Ln指标计算得到、步长为5 dB(A)的等噪声级曲线（isophone curves）划定边界。 Ln为夜间时段（22时至次日6时）的噪声级指标。 可通过向联系人发送消息，由DDT 74生成对应道路路段的提取数据。