Noise mapping Freiburg i. Br. — Rail 2022 (LDEN)

The spatial data set includes the noise mapping of the rail network for the urban area of Freiburg im Breisgau in 2022 (LDEN). The noise maps are the basis of the noise action plans and cover all roads with more than 4,000 vehicles per day, all light rail lines, the Breisacher and the Höllental railway line, as well as all commercial installations listed in Annex 1 of the Environmental Noise Directive (IED installations). Content of noise mapping: spatial representation of noise maps, tabular information on the number of people exposed to noise, estimated extent of adverse health effects and harassment. Noise immissions from road, rail and commercial noise shall be calculated and assessed on the basis of a digital three-dimensional urban model, separately in accordance with the calculation methods established by the European Union for the time ranges 24 hours (LDEN) and night hours (22.00 to 6 a.m., LNight). In the noise maps, the sound load is shown on the basis of different colors. The maps reflect the sound level loads at a calculation height of 4 m above the terrain.本空间数据集涵盖2022年布赖斯高地区弗赖堡市区轨道交通网络的噪声分布图（LDEN）。 本噪声分布图为噪声行动计划的核心依据，覆盖每日车流量超4000辆的全部道路、所有轻轨线路、布赖萨赫铁路线与黑尔谷铁路线，以及《环境噪声指令》（Environmental Noise Directive）附录1所列的全部商业设施（IED设施）。 噪声分布图的内容包括：噪声分布的空间可视化成果、噪声暴露人群规模的表格统计数据，以及预估的不良健康影响范围与噪声侵扰程度。 道路、轨道交通及商业活动的噪声受纳量，需基于数字化三维城市模型进行计算与评估，并依据欧盟制定的计算方法，分别针对24小时全天（LDEN）与夜间时段（22:00至次日6:00，LNight）两个时段开展。 本噪声分布图以不同色彩直观呈现声级分布情况。 该分布图以距地表4米的计算高度为基准，反映区域声级负载状况。