— type A card in Lden: areas exposed to + 55 dB(A) with curves
isophones from 5 to 5 dB(A): ]55;60],]60,65],]65,70],]70,75],]>75]
— Lden: noise discomfort index weighted by different periods
one day, i.e.:
day/day: 6am-18h
evening/evening: 18h-22h
night/night: 10h-6h
— dB(A): unit of measurement expressing an intensity level (decibel)
weighted according to the physiological characteristics of the human ear.
Sources: CE Med2009 + IGN bdCarto
C_N1_bdTopo
C_COMMUNE
C_COMMUNE_Labels
C_BarreauRdT_RD6_ALDEN_70
C_Barreau_liaisonRD6RdT
C_BarreauRdT_RD6_ALDEN_55
C_BarreauRdT_RD6_ALDEN_60
C_BarreauRdT_RD6_ALDEN_75
C_BarreauRdT_RD6_ALDEN_65
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