Dataset Direct Download Service (WFS): Noise maps on departmental roads: Noise level zoning (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（European Directive 2002/49）《关于环境噪声评估与管理》，确立了噪声管控政策的整体框架。 本数据集的数据系为响应2006年3月24日第2006-361号关于编制噪声地图（noise maps）与环境噪声防治计划的法令而生成。 该法令规定需编制噪声地图与环境噪声防治计划的情形包括： 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. 年列车通行次数超过3万次的每条铁路基础设施； 3. 人口超过10万的聚居区，其名单附于该法令附件。 2008年，法国朗德省（Department of Landes）完成了噪声区划编制工作。依据四类统一噪声级指标——昼夜等效声级（Lden，level day evening night）、夜间声级（Ln，level night）、Lden大于68分贝(A)以及Ln大于62分贝(A)，生成了四类用于初始诊断的噪声地图。 2008年涉及的线路包括： — 高速公路网：A63、A64 — 国道网：RN10 — 省道网：RD29、RD129、RD524、RD810、RD824、RD932E、RD947 — 达克斯道路网 读取此类噪声地图需遵循下述详细注意事项。