Comparison of Longitudinal Unevenness of Old and Repaired Highway Lanes
Publication: Journal of Transportation Engineering
Volume 138, Issue 3
Abstract
Remixing of the wearing course in the high-speed lane of a freeway resulted in a new road surface that, compared with the old surface in the adjacent low-speed lane, was perceived as a bumpy ride by road users, as well as by the road agency and the paving contractor. In this paper, the unevenness of the longitudinal road profiles of the old and the new (remixed) surfaces are analyzed and compared. The comprehensive analysis was conducted with statistical and signal processing tools. The probability density function (PDF), power spectral density (PSD), autocorrelation function, coherence, and occurrence of local obstacles in both lanes were evaluated and mutually compared. The profiles were quantified with commonly used indicators of road unevenness. The paper documents some disadvantages of the International Roughness Index (IRI) and advantages of road elevation power spectral density to reflect the ride quality of road profiles.
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Acknowledgments
This work has been partially undertaken with assistance from the Grant No. UNSPECIFIED2/0075/10 of the VEGA Grant Agency of Slovak Academy of Sciences. The authors are indebted to Dr. Oldřich Kropáč for his valuable comments to this study.
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 138 • Issue 3 • March 2012
Pages: 371 - 380
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Mar 11, 2010
Accepted: May 17, 2011
Published online: May 18, 2011
Published in print: Mar 1, 2012
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