Railway noise zones (map A — LN night noise) in the Upper Rhine

Noise level zones describe a noise exposure situation based on a noise indicator or area affected by noise. They are used primarily for the preparation of strategic noise maps pursuant to Article R.572-5 of the Environmental Code.

噪声区划（Noise level zones）是以噪声指标或受噪声影响区域为依据，用于描述噪声暴露状况的分区体系。其主要用途为依照《环境法典》第R.572-5条的规定编制战略噪声地图。