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.


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    Title :

    Estimation of night traffic noise levels


    Additional title:

    Schätzung des Verkehrsgeräuschpegels von Nachtzügen


    Contributors:
    Jimenez, S. (author) / Genesca, M. (author) / Romeu, J. (author) / Sanchez (author)

    Published in:

    Publication date :

    2008


    Size :

    5 Seiten, 2 Bilder, 7 Tabellen, 11 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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