Railway infrastructure classified according to their noise level

land transport infrastructure identified and classified according to their sound and traffic characteristics. On the basis of this classification, the Prefect determines, by order: (1) Areas affected by noise in the vicinity of the identified infrastructure 2° The sound levels that manufacturers are required to take into account for the construction of buildings included in these sectors; (3) The acoustic insulation of the façade required pursuant to the decree provided for in Article R. 571-43 of the Environmental Code.