About 25800 longitudinal profiles of in-service roads in the USA (Long-Term Pavement Performance (LTPP) Program) were evaluated to obtain indicators of the longitudinal unevenness (roughness) of the road surface defined by standards ISO 8608 : 1995 and EN 13036-5 : 2006. Besides the commonly used International Roughness Index (IRI), also parameters of the Power Spectral Density (PSD) were evaluated taking into account not only the whole interval of effectively acting wavelengths, but also its two and three partial sub-bands. Differences between left and right tracks and between Asphalt Concrete (AC) and Portland Cement Concrete (CC) wearing courses were considered. For all the mentioned indicators (21), their Probability Density Functions (PDF) and numerical statistics were estimated.


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    Titel :

    Indicators of longitudinal unevenness of roads in the USA


    Beteiligte:
    Kropac, Oldrich (Autor:in) / Mucka, Peter (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2008


    Format / Umfang :

    23 Seiten, 11 Bilder, 5 Tabellen, 19 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Indicators of longitudinal unevenness of roads in the USA

    Kropac, Oldrich | Online Contents | 2008


    Indicators of longitudinal unevenness of roads in the USA

    Kropac,O. / Mucka,P. / Slovak Academy of Sciences,SK | Kraftfahrwesen | 2008