Strategic noise map type “A”: Ln indicator on road network — Isère

Noise pollution. A-Table of areas exposed to noise between isophones 50 dBA and greater than 70 dBA during nighttime (Ln indicators), of the road network concerned. This table represents, for all roads flowing more than 8200 vehicles/day in TMJA-based traffic 2010, areas exposed to noise ranging from 50 to more than 70 dBA using isophone layers according to the Ln indicator (level night).