Streets

Road network as the basis for noise mapping in accordance with the EU Ambient Noise Directive includes main roads and supplementary roads According to § 47b of the BImSchG, main roads are “Bundesfernstraße, Landesstraße or other cross-border road, each with a traffic volume of more than three million motor vehicles per year” Supplementary roads include other roads with lower traffic and/or other categories of roads (including district and municipal roads)符合《欧盟环境噪声指令》（EU Ambient Noise Directive）要求的噪声地图绘制基础道路网，包含主干道与辅助道路。 根据《德国联邦污染防治法》（BImSchG）第47b条的规定，主干道是指“联邦远程公路、州级公路或其他跨境公路，且年均机动车交通量均超过300万辆”。 辅助道路则涵盖其他交通量较低的道路以及其他类别道路（含区级道路与市政道路）。