Noise mapping provincial roads 2016 — contours night

The province of Fryslân had sound cards drawn up. With the help of advanced calculation models, the noise has been made clear for homes, buildings with an education or health function and quiet areas. In numerical terms, a distinction has been made between the roads that must be examined (provincial roads with 3 million or more vehicle passages) and all provincial roads.
The present file concerns the sound contours-night.

弗里斯兰省（Fryslân）已完成噪声制图工作。依托先进计算模型，该省已明确住宅、教育或医疗功能建筑以及安静区域的噪声状况。从量化维度而言，已针对需纳入核查的道路（车流量达300万及以上的省级道路）与全部省级道路作出明确区分。本数据集涉及夜间噪声等值线（sound contours）图。