Noise impact of an international traffic corridor in alpine environment: traffic
scenarios and population exposure in Mont Blanc area
Giovanni Agnesod,
Marco Cappio Borlino, Christian Tibone,
Christian Tartin, Daniele Crea, Filippo Berlier
National Road Mont Blanc Tunnel entrance
Highway
The area object of the analysis and its position in Europe.
3
Lden sound levels territorial distribution before (a) and
after (b) the opening of the last section of the highway E25, for the most in gallery.
dB(A)
< 55 55-59 60-64 65-69 70-74
> 75
Lnight sound levels territorial distribution before (a) and after (b) the opening of the last section of the highway E25, for the most in gallery.
dB(A)
< 45 45-49 50-54 55-59 60-64 65-70
> 70
Percentage of exposed population for L bands of values. 5
0 10 20 30 40 50 60 70 80
% exposed population
<55 55_59 60_64 65_69 70_74 >75
bands of values dB(A)
noise traffic on national road SS26 after opening highw ay E25 noise traffic on national road SS26 before opening highw ay E25
Percentage of exposed population for Lnight bands of values.
0 10 20 30 40 50 60 70 80
% exposed population
<45 45_49 50_54 55_59 60_64 65_70 >70
bands of values dB(A)
noise traffic on national road SS26 after opening highw ay E25 noise traffic on national road SS26 before opening highw ay E25
Percentage of exposed population for L bands of values. 7
0 10 20 30 40 50 60 70 80
% exposed population
<50 50_54 55_59 60_64 65_70 >70
bands of values dB(A)
noise traffic on national road SS26 after opening highw ay E25 noise traffic on national road SS26 before opening highw ay E25
Statistic distributions of short term Leq values (30 s), 06-22 period,
0 2 4 6 8 10 12
40 45 50 55 60 65 70 75 80 85
decibel (A)
occurancy %
noise traffic on national road SS26 after opening highw ay E25 noise traffic on national road SS26 before opening highw ay E25
9
L06-22 curve of the sound levels at 40 dBA
before (a) and after (b) the opening of the last section of the highway E25, for the most in gallery.
dB(A)
< 40
> 40
11
13
15
