Areas exposed to noise municipal national motorway for type C map LD indicator — unlicensed road network

Areas exposed to noise municipal national motorway for type C map LD indicator — unlicensed road network 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.针对C类地图LD指标（LD indicator）的受市政道路、国家高速公路及无许可道路网噪声影响的区域。 噪声等级区域基于噪声指标或受噪声影响的范围，对噪声暴露场景进行界定。此类区域主要用于依据《环境法典》第R.572-5条编制战略性噪声地图。