A method to estimate levels of night traffic noise Ln is presented with the assumption that the day levels Ld are known, applying the expression Ln = Ld - Ld-n, where Ld-n is the difference between Ld and Ln. This procedure implies the direct measurement of Ld-n in some streets of the city by means of long-term measurements (more than 24 hours) and the extrapolation of these results to the remaining streets. The estimation of Ln using this procedure allows a substantial saving of resources as it does not demand the repetition of all measurement points used in determining Ld, given that Ld-n only depends on traffic variation. It is demonstrated that Ld-n parameter can follow a normal distribution, and that statistically it is not a constant value for all streets in a given city but it is necessary to establish at least two different categories of streets to enable accurate estimation.
Estimation of night traffic noise levels
Schätzung des Verkehrsgeräuschpegels von Nachtzügen
Acta Acustica united with Acustica ; 94 , 4 ; 563-567
2008
5 Seiten, 2 Bilder, 7 Tabellen, 11 Quellen
Article (Journal)
English
Effects of Street Traffic Noise in the Night
NTIS | 1980
|Effects of street traffic noise in the night
NTRS | 1980
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