Nuisance — Type A road noise area, Lden index, railways in Loir-et-Cher

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.噪声级分区（Noise level zones）是基于噪声指标或受噪声影响的区域，用于界定噪声暴露状况的分区类型。此类分区主要用于依据《环境法典》第R.572-5条的规定编制战略性噪声地图。