Development of IRI Limits and Targets for Network Management and Construction Approval Purposes
https://apps.dot.state.nc.us/Projects/Research/ProjectInfo.aspx?ID=3061
Record Type: DOT
The North Carolina Department of Transportation (NCDOT) considers International Roughness Index (IRI) an important indicator of pavement condition, and has collected IRI data since 1998. Although Federal Highway Administration (FHWA) recommended several IRI thresholds, they are not locally calibrated and thus do not reflect the ride smoothness perceived by the traveling public in North Carolina. To address this issue, the researchers at University of North Carolina (UNC) Charlotte propose to develop the relationship between perceived ride quality (comfort) and measured IRI. This will be done by selecting candidate roadway sections, recruiting research participants, collecting in-vehicle and pavement condition data, and developing an ordinal categorical model. In addition, the researchers will investigate the relationship between initial construction IRI and long term network performance IRI, collect and calibrate the IRI input values of pavements in North Carolina for use in DARWIN-ME. Consequently, IRI information can be used extensively by the Pavement Management Unit (PMU) to select timely pavement maintenance treatments, and thus to strategically manage North Carolina¿s roadway system in a cost effective manner.
Start date: 2012/8/16
End date: 2014/8/15
Status: Active
Contract/Grant Number: 2013-02
Total Dollars: $330,000
Source Organization: North Carolina Department of Transportation
Date Added: 06/12/2012
Index Terms: Roughness, International Roughness Index, Pavement performance, Condition surveys, Ride quality, Smoothness, Construction, North Carolina,
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North Carolina Department of Transportation
www.ncdot.org/doh/preconstruct/tpb/research/
Research and Development
1549 Mail Service Center
Raleigh, NC 27699-1549
USA
Phone: (919) 508-1790
Fax: (919) 715-0137
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Kadibhai, Mustansir A.
Phone: (919) 508-1819
Fax: (919) 715-0137
Email: mkadibhai@ncdot.gov
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University of North Carolina, Charlotte
Department of Engineering Technology
9201 University City Boulevard
Charlotte, NC 28223-0001
USA
Phone: (704) 687-2305
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Chen, Dong
Phone: (954) 847-2796
Email: dong.chen@dot.state.fl.us
Hildreth, John C.
Phone: (704) 687-6166
Fax: (704) 687-6577
Email: john.hildreth@uncc.edu
Ogunro, Vincent
Phone: (704) 687-3101
Email: vogunro@uncc.edu
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