The IJK Ride Indicator, 1976

(1976) The IJK Ride Indicator, 1976. Transportation, Department of

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Abstract

State highway engineers realized a need for a numerical quality index and began planning for a research project of this type in 1951. The Present Serviceability Index was developed through the AASHO (now AASHTO) Road Test near Ottawa, Illinois, from 1956 to 1962.1 longitudinal profile and physical deterioration such as cracking, patching, and rut depth (for flexible pavements) were considered in deriving these Present Serviceability Index (PSI) equations

Item Type: Departmental Report
Keywords: Deterioration, Flexible pavements, Indexes (Information management), Road meters, Road tests, Serviceability
Subjects: Transportation > Pavements
Transportation
Transportation > Roads and highways
Transportation > Research
Transportation > Design and Construction
Transportation > Equipment
Transportation > Maintenance and preservation
ID Code: 22515
Deposited By: Iowa DOT Library
Deposited On: 26 Jul 2016 12:36
Last Modified: 26 Jul 2016 12:36
URI: http://publications.iowa.gov/id/eprint/22515