Noise Round 2 Rail (Day)

This is a polygon Dataset of the strategic noise mapping of rail, which were identified as those rail exceeding the flow threshold of 30,000 vehicles passages per year, in the form of noise contours for the Lden (day) and Lnight (night) periods for Dublin and Cork agglomerations and the major roads outside of the agglomerations.
The Db Value represents the average decibel value during the day time

本数据集为铁路战略噪声测绘多边形数据集，所覆盖对象为年车流量超过30000辆次的铁路线路，以噪声等值线（noise contours）形式呈现都柏林、科克城市群及其外围主要道路的昼间Lden与夜间Lnight时段噪声数据。其中Db值代表日间平均分贝数值。