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Switching to International Roughness Index
Transportation Research Record: Journal of the Transportation Research Board, 1998The International Roughness Index (IRI) has become a well-recognized standard for measurement of pavement roughness. The main objectives of the study were to evaluate the consequences of switching to IRI roughness measurements, and to develop a procedure for switching from measuring roughness with a response-type device, used for more than 10 years, to
Jerry J. Hajek +2 more
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A model for predicting the deterioration of the international roughness index
International Journal of Pavement Engineering, 2020Road pavements continuously deteriorate mainly due to the combined influence of traffic load and environmental conditions.
Arieh Sidess, Amnon Ravina, Eyal Oged
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Estimation of Present Serviceability Index from International Roughness Index
Transportation Research Record: Journal of the Transportation Research Board, 1999An analysis is described that was undertaken with the objective of developing realistic models for estimating present serviceability index (PSI) as a function of international roughness index (IRI) for asphalt and concrete pavements. These models were developed by first analyzing the correlation between slope variance and PSI values obtained in the ...
Kathleen Hall, Carlos Muñoz
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Prediction models for international roughness index and rut depth [PDF]
, 2019 In Sweden, road surface conditions have been assessed with laser-based profilographs since 1987. The Swedish Transport Administration needs a complete description and prediction but not all roads are assessed every year.
O. Eriksson, T. Lundberg
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International Roughness Index and a New Solution for Its Calculation
Journal of Transportation Engineering, Part B: Pavements, 2018AbstractThe international roughness index (IRI) has been one of most widely used indicators for characterizing road roughness.
Jie Li, Zhenwei Zhang, Wenzhu Wang
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International Roughness Index prediction model for flexible pavements
International Journal of Pavement Engineering, 2018International Roughness Index (IRI) is a pavement performance indicator which reflects not only the pavement condition but also the ride quality and comfort level of road users.
Nader Abdelaziz +3 more
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International Roughness Index specifications around the world
Road Materials and Pavement Design, 2016The International Roughness Index (IRI) is an indicator used worldwide for the characterisation of longitudinal road roughness. This study summarised IRI limit values for new, reconstructed, or rehabilitated roads; for in-service (existing) roads; and road classification schemes used around the world. An overview of practices in 35 US states and 29 non-
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Development of a crowdsourcing-based system for computing the international roughness index
International Journal of Pavement Engineering, 2020Pavement roughness is one of the essential parameters of pavement quality affecting ride quality, driving safety, and fuel consumption.
Zahra Mirtabar +3 more
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Estimate non-Gaussian road roughness from international roughness index
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile EngineeringGaussian model is commonly used to characterize road roughness, while field measured data is usually non-Gaussian. A new method based on the amplitude modulation and International Roughness Index is proposed in this paper to estimate non-Gaussian road roughness. A modified Gamma distribution is proposed to describe the International Roughness Index and
Fei Xu, Feifei Ma, Kjell Ahlin
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The Predicted Model of International Roughness Index for Drainage Asphalt Pavement
2008Roughness is a very important performance indicator in pavement maintenance management systems. The international rough index (IRI) of indicators was used as the core of roughness measuring of degree gradually in recent years domestically, but to predict a smooth degree of indicators the method is set up differently as there is a different prediction ...
Chien-Ta Chen +4 more
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