Strategic noise maps of the departmental and municipal road network whose traffic exceeds 3 million vehicles per year (2nd deadline) — Department of Puy-de-Dôme — 2012

3 sets of graphic documents make up this dataset: — Standard maps a represent, for the reference year, the areas exposed to more than 55 dB for the Lden indicator (24h) and to more than 50 dB(A) for indicator Ln (night), — the type b maps identify the areas affected by noise referred to in the Prefectural Order of 2 June 1999 classifying the land transport infrastructure of the department of Puy-de-Dôme, — type c maps represent areas likely to contain buildings exceeding the limit values (62 dB(A) for indicator Ln and 68 dB(A) for indicator Lden). The mapped data is valid only on a scale less than 1/25000th.