LN — Strategic Noise Maps of Great Roads of the Valencian Community — 4th phase

LN of the strategic noise maps of large road axes of the Comunitat Valenciana — 4th phase. Ln or Night is defined as the night noise index, which is the noise index corresponding to sleep disturbance, expressed in decibels (dB) and defined as the A-weighted average long-term sound level defined in ISO 1996-2: 1987, determined throughout all overnight periods of one year, according to Royal Decree 1513/2005 of BOE 301 of 17/12/2005. Large road axes, are those that have a traffic greater than 3,000,000 vehicles/year