Noise contour and time period EU noise load map 2021 (CNOSSOS calculation method)

Noise contours for the base year 2021. Dataset was created within the framework of the EU Environmental Noise Directive.
Dataset is made once every five years.
This dataset is based on all provincial roads.However, at the request of Knowledge Centre Infomil, the traffic intensities of the year 2019 have been chosen for the traffic intensities.
Indeed, the intensities for the years 2020 and 2021 show a markedly lower volume of traffic due to the Corona measures.

本数据集为2021基准年的噪声等值线图，依据欧盟环境噪声指令（EU Environmental Noise Directive）框架编制而成。
该数据集每五年编制一次。
本数据集原本以全部省级公路为基础构建，但应Infomil知识中心（Knowledge Centre Infomil）的要求，最终选用2019年的交通强度数据。
受新冠防控措施影响，2020年与2021年的交通流量均出现明显下滑。