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Road Roughness

UMTRI is well-known for its pioneering research in measuring road roughness, and its researchers contributed to developing the International Roughness Index (IRI). UMTRI researchers also compare and verify road profilers, and disseminate information, software, and data associated with road roughness.

Recent Publications

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Evaluating roadway surface rating technologies 
Bruce Belzowski, Andrew Ekstrom

report UMTRI-2015-19 

The key project objective was to assess and evaluate the feasibility and accuracy of custom software used in smartphones to measure...

Pavement surface specification for road load measurement
Steven M. Karamihas, Michelle A. Barnes, Robert Otto Rasmussen

report UMTRI-2014-9

This report proposes a framework for specifying coast - down test surfaces that will produce relevant, reproducible road load...

Curl and warp analysis of the LTPP SPS-2 site in Arizona [Steven M. Karamihas and Kevin Senn].
Steven M. Karamihas, Kevin Senn, Larry Wiser.

report FHWA-HRT-12-068; UMTRI-2012-28

"This study examined the roughness and roughness progression of 21 test sections on the LTPP SPS-2 site in Arizona over the first...

Performance evaluation of Arizona's LTPP SPS-1 project strategic study of flexible pavement structural factors / prepared by Nichols Consulting Engineers.
J. Puccinelli, S. Karamihas, K. Hall, K. Senn

report

The influence of road surface properties on vehicle suspension parameters optimized for ride design trends for global markets.
Bhaskar Chaturvedi, Timothy Gordon, Steven Karamihas.

journal article IN: SAE International Journal of Passenger Cars. Mechanical Systems. Vol. 5, no. 1 (2012), p. 413-424.

Suspension design is influenced by many factors, especially by vehicle dynamics performance in ride, handling and durability. In the...

Experts

Mark Gilbert Mark Gilbert
Steve Karamihas Steve Karamihas
Michelle Rasulis Michelle Rasulis

Recent Projects

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Improving the quality of pavement profile measurement in urban settings

Sponsor
Transportation, Department of-Federal Highway Administration

Investigators
David J. LeBlanc

2012 to 2014

TOPR No. 12 Evaluation of Potential Pavement Profile Reference Devices

Sponsor
Soils & Materials Engineers, Inc.

Investigators
David J. LeBlanc

2012