Indicators of Longitudinal Road Unevenness and their Mutual Relationships

An overview of contemporary indicators of longitudinal road unevenness (roughness) is given. The power spectral density (PSD) with its parameters (unevenness index and waviness), International Roughness Index (IRI), and three-band indicators (TBI) or triads are considered. Mutual conversion relation...

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Bibliographic Details
Published in:Road materials and pavement design 2007-01, Vol.8 (3), p.523-549
Main Authors: KROPAC, Oldrich, MUCKA, Peter
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Exact sciences and technology
International Roughness Index (IRI)
Longitudinal Profile
Power Spectral Density (PSD)
Profile Measurement
Road Surface
Road test: methods, equipments and results
Surface Unevenness/Roughness
Three-band Indicators (TBI)
Transportation infrastructure
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Summary:An overview of contemporary indicators of longitudinal road unevenness (roughness) is given. The power spectral density (PSD) with its parameters (unevenness index and waviness), International Roughness Index (IRI), and three-band indicators (TBI) or triads are considered. Mutual conversion relations between the PSD and the remaining indicators are given. The importance of the waviness is emphasized and at the same time, it is shown that the estimation of waviness as an indispensable companion of each unevenness indicator is possible within the particular unevenness characterization and estimation methodology. For all the indicators considered, reference data on uncertainties are given, which have been obtained partly from own simulation studies, partly from data obtained from measurements on in-service roads.
ISSN:1468-0629
2164-7402
DOI:10.1080/14680629.2007.9690087