Results 251 to 260 of about 18,730,512 (283)

Applicability of the International Roughness Index as a Predictor of Asphalt Pavement Condition

Journal of Transportation Engineering, 2007
This note establishes the relationship between the surface distress of an asphalt pavement and its roughness, as conveyed respectively by the pavement condition index (PCI) and the international roughness index (IRI). The DataPave software provides the roughness of varied roadway pavement sections from the North Atlantic region that were investigated ...
Park, Kyungwon, Thomas, Natacha E., Lee, K. Wayne   +2 more
openaire   +2 more sources

Using the International Roughness Index for Profilograph Trace Reduction

Transportation Research Record: Journal of the Transportation Research Board, 1996
Current Louisiana acceptance specifications for 100 percent payment require Profile Indexes (PIs) completed pavement surface to as low as 3.0 in./mi for flexible pavements and 6.0 in./mi for rigid pavements. These acceptance specifications are currently among the most stringent in the United States. Requiring an acceptance PI value of less than 7.0 in./
openaire   +1 more source

Feasibility of Modernizing the Acceptable International Roughness Index Value

Transportation Research Record: Journal of the Transportation Research Board
The U.S. National Highway System has set a standard for acceptable pavement roughness, measured by the international roughness index (IRI) at less than 2.68 m/km (170 in./mi). This value corresponds to a present serviceability rating (PSR) of 2.5, where half of the highway drivers perceive the pavement ride quality as unacceptable with a repair need ...
Yoojung Yoon, Shirin Hassan
openaire   +1 more source

Effects of international roughness index on vehicle emissions

International Journal of Vehicle Systems Modelling and Testing, 2021
Priscilla Oliveira Azevedo, Ernesto Ferreira Nobre Junior, Arielle Elias Arantes   +2 more
openaire   +1 more source

Developing Spectrum-Based Models for International Roughness Index and Present Serviceability Index

Journal of Transportation Engineering, 2001
This paper presents a theoretical model for determining international roughness index (IRI) and present serviceability index (PSI) in term of power spectral density (PSD) roughness. Frequency response functions of quarter-car model and CHOLE-type profilometer are obtained by means of stochastic process theory.
openaire   +1 more source

Gray System Model for Estimating the Pavement International Roughness Index

Journal of Performance of Constructed Facilities, 2005
The international roughness index (IRI) is a measurement of pavement roughness that is widely accepted for evaluating pavement serviceability, especially its riding quality. Generally, as the age of pavement increases, its condition deteriorates and its IRI value increases.
Yi Jiang, Shuo Li
openaire   +1 more source

On a Simple Method for Estimating International Roughness Index Using a Profilograph

2008 IEEE Instrumentation and Measurement Technology Conference, 2008
In this paper, we derive a simple method for estimating the International Roughness Index (IRI) of a pavement profile using data collected by a computerized profilograph. The algorithm presented herein achieves this by estimating the standard deviation of the point-to-point slope of the pavement from the profilograph's recorded data and then mapping ...
Justin S. Dyer, Stephen A. Dyer, Dwight D. Day, John J. Devore   +3 more
openaire   +1 more source

Factors Contributing to Differences between Profiler and the International Roughness Index

Transportation Research Record: Journal of the Transportation Research Board, 2006
One of the data elements included in a pavement management system is the roughness of each highway segment. State highway agencies use inertial profilers to collect profile data of the pavements and then use these data to compute the International Roughness Index (IRI) of each highway segment.
Rohan W. Perera, Starr D. Kohn, Larry J. Wiser   +2 more
openaire   +1 more source

Methods on Calculating the International Roughness Index: A Literature Review

2022
Juland A. Padilla, Orlean G. dela Cruz
openaire   +1 more source

Development of a crowdsourcing-based system for computing the international roughness index

International Journal of Pavement Engineering, 2022
Ahmadreza Mahmoudzadeh, Amir Golroo
exaly