DDT 70 — Strategic Noise Map — Type B Map in Haute-Saône

The European Directive 2002/49/EC on the assessment and management of environmental noise aims at a harmonised assessment of exposure to noise in the Member States. It defines them as representations of data describing a noise situation according to a noise indicator, indicating exceedances of limit values, the number of persons exposed. Noise maps are not prescriptive. These are information documents that are not legally enforceable. As graphic elements, however, they can supplement a Local Planning Plan (LDP). As part of an Urban Travel Plan (UDP), maps can be used to establish baselines and target areas where better traffic management is needed. Noise zones are geometric elements of the strategic noise map. For type A maps (CBSTYPE), each noise zone is usually bounded by 2 isophone curves (Lden 55-60, 60-65, 65-70, 70-75 and Ln 50-55, 55-60, 60-65, 65-70) or by the lower limit isophone curve (Lden >75, Ln > 70). For type C maps (CBSTYPE), each noise zone shall be bounded by the lower limit isophone curve (Lden > 68 or 73, Ln > 62 or 65).欧盟《2002/49/EC号环境噪声评估与管理指令》旨在对欧盟成员国境内的噪声暴露情况实施统一化评估。该指令将噪声地图定义为基于噪声指标描述噪声状况、标明限值超标情况与暴露人口数量的数据表征形式。 噪声地图不具备强制规定性，仅为无法律强制执行力的参考文档。但作为可视化图形要素，其可作为地方规划计划（Local Planning Plan, LDP）的补充材料。 作为城市出行计划（Urban Travel Plan, UDP）的组成部分，噪声地图可用于划定基线与需优化交通管理的重点目标区域。 噪声区域是战略噪声地图的几何要素。对于A类地图（CBSTYPE），每个噪声区域通常由两条等响曲线（Lden 55-60、60-65、65-70、70-75 与 Ln 50-55、55-60、60-65、65-70）界定，或以最低限值等响曲线（Lden＞75、Ln＞70）作为边界。对于C类地图（CBSTYPE），每个噪声区域必须以最低限值等响曲线（Lden＞68或73、Ln＞62或65）作为边界。