Results 281 to 290 of about 261,425 (336)

Estimate non-Gaussian road roughness from international roughness index

Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
Gaussian 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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International Roughness Index specifications around the world

Road Materials and Pavement Design, 2016
The 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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Exploring the relationship between the International Roughness Index (IRI) and the ISO 8608 roughness coefficient (Gd(n0))

International Journal of Pavement Engineering
Globally, diverse agencies employ varied metrics to gauge road roughness, complicating the exchange of information for pavement maintenance. This study addresses this challenge by establishing a theoretical connection between the International Roughness ...
Jeng‐Hsiang Lin
semanticscholar   +1 more source

International Roughness Index (IRI) measurement using Hilbert-Huang transform

Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XII, 2018
International Roughness Index (IRI) is an important metric to measure condition of roadways. This index is usually used to justify the maintenance priority and scheduling for roadways. Various inspection methods and algorithms are used to assess this index through the use of road profiles. This study proposes to calculate IRI values using Hilbert-Huang
Ming Wang, Wenjin Zhang
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Research on Influencing Factors of Asphalt Pavement International Roughness Index (IRI) Based on Ensemble Learning

Intelligent Transportation Infrastructure, 2022
International Roughness Index (IRI) is one of the most commonly used indicators to measure pavement surface smoothness. This paper uses the data obtained from the Specific Pavement Studies-3 (SPS-3) of the Long Term Pavement Performance (LTPP) program ...
Zhiwei Luo, You Zhan, Yang Liu, Allen A. Zhang, Xiuquan Lin, Yurong Zhang   +5 more
semanticscholar   +1 more source

International Roughness Index (IRI) prediction using various machine learning techniques on Flexible Pavements

2022 2nd International Conference on Advance Computing and Innovative Technologies in Engineering (ICACITE), 2022
Pavement performance is an essential factor for companies to shape their strategies for maintenance, repair, and sometimes reconstruction of damaged roads. Pavement roughness is a crucial indicator for performance measurement. The international roughness
Wasique Haleem Pandit, KP Sharma, N. Sharma   +2 more
semanticscholar   +1 more source

Influence of Trajectory Deviation on the Calculation Accuracy of International Roughness Index

2024 11th International Forum on Electrical Engineering and Automation (IFEEA)
This study investigates the application of vehicle-mounted road laser profilometers in road roughness detection and the challenges they encounter, with a focus on analyzing the impact of trajectory deviation on the International Roughness Index (IRI ...
Huazhen An, Hongbo Guo, Yue Liu, Yingchao Luo   +3 more
semanticscholar   +1 more source

IRI (International Roughness Index): An Indicator Of Vehicle Response

Materials Today: Proceedings, 2018
Abstract Public roads are the principle source of excitation to ground vehicles. Objective roughness/severity classification of the public roads is essential to predict vehicle response/fatigue damage at an early stage of vehicle development program.
Prashant R. Pawar, Arun Tom Mathew, M.R. Saraf   +2 more
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Smooth Enough?: Estimated Roughness on Roads with Low International Roughness Index Values

Transportation Research Record: Journal of the Transportation Research Board, 2003
The reported investigation is one part of a project concerning methods for measurement of the longitudinal roughness of roads and the necessary accuracy. In this study the main focus was on the subjective experience of roughness on roads with low international roughness index (IRI) values, that is, fairly good roads.
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Influence of Profile Specification on International Roughness Index

Journal of Infrastructure Systems, 2019
AbstractThis paper addressed an important question of selection of wheel path(s) for International Roughness Index (IRI) or Mean Roughness Index (MRI) estimation.
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