Map Viewing Service (WMS) of the dataset: Noise maps on national roads: Sound level zoning (day, evening, night) in the Department of Landes

European Directive 2002-49 of 25 June 2002 on the assessment and management of noise in the environment lays down the framework for noise control policy.

The data were produced in response to Decree No. 2006-361 of 24 March 2006 on the preparation of noise maps and environmental noise prevention plans.

It states that noise maps and environmental noise prevention plans are drawn up:
(1) For each road and motorway infrastructure with an annual traffic of more than 3 million vehicles;
(2) For each railway infrastructure with an annual traffic exceeding 30,000 train crossings;
(3) For agglomerations with more than 100,000 inhabitants whose list is annexed to the decree.

Noise zones were developed in 2008 in the Department of Landes. Four families of noise maps are the initial diagnosis according to four harmonised noise level indicators: Lden(level day evening night), Ln (level night), Lden above 68 dB(A) and Ln above 62 dB(A)

Axes concerned in 2008:
— motorway network: A63 A64,
— national network: RN10,
— departmental network: RD29 RD129 RD524 RD810 RD824 RD932E RD947,
— Dax road network

Reading these maps requires some precautions detailed below.

2002年6月25日发布的欧盟第2002/49号指令（关于环境噪声评估与管理）确立了噪声管控政策的框架。

本数据集系依据2006年3月24日第2006-361号法令（关于噪声地图与环境噪声防治规划编制）所生成。

该法令规定需编制噪声地图与环境噪声防治规划的情形包括：
(1) 年车流量超过300万辆的每条道路及高速公路基础设施；
(2) 年列车通行量超过3万次的每条铁路基础设施；
(3) 人口超过10万的聚居区，其名录附于该法令附件。

2008年，法国朗德省（Department of Landes）开展了噪声区划工作。基于四项统一的噪声级指标，形成四类噪声地图作为初始诊断结果，分别为昼夜等效声级（Lden, Level Day Evening Night）、夜间等效声级（Ln, Level Night）、Lden大于68 dB(A)的区域，以及Ln大于62 dB(A)的区域。

2008年涉及的线路如下：
— 高速公路网：A63、A64
— 国道网：RN10
— 省道网：RD29、RD129、RD524、RD810、RD824、RD932E、RD947
— 达克斯（Dax）道路网

阅读此类噪声地图需遵循下述若干注意事项。