LD – Strategic Maps of Noise of Large Railway Axes of the Valencian Community – 4th phase

LD of the strategic noise maps of large railway axes of the Valencian Community – 4th phase. Ld or LDIA is defined as a day noise index, which is the noise index associated with discomfort during the day period, expressed in decibels (dB) and defined as the A-weighted average long-term sound level defined in ISO 1996-2: 1987, determined throughout all day periods of a year, according to Royal Decree 1513/2005 of BOE 301 of 17/12/2005. Large railway axes, are those that have a number of circulations more than 30.000 trains/year