Roads (within agglomerations) Noise Contours Lden Round 2

Data indicating the level of noise according to the strategic noise mapping of all road sources within areas with a population of at least 100,000 people (agglomerations). Lden indicates a 24 hour annual average noise level with separate weightings for the evening and night periods. This data is a product of the strategic noise mapping analysis undertaken to meet the requirements of the Environmental Noise Directive (Directive 2002/49/EC).

该数据集展现了人口至少为10万人的城市群内，依据战略噪声映射对各类道路源噪声水平进行评估的结果。其中，Lden指标代表了一年中24小时的平均噪声水平，并针对晚夜间时段进行了独立加权处理。此数据集为实施环境噪声指令（指令2002/49/EC）所进行的有针对性的噪声映射分析之成果。