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International Roughness Index: Michigan, 2010-2011

Attribute Value
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Description:
International Roughness Index is a statistic of a pavementsurface s longitudinal profile that quantifies ride quality as the estimatedaccumulation of a passenger vehicle s vertical movement (in inches) as itdrives over the subject road for a distance of one mile. The reported IRIunits are, therefore, inches-per-mile, with a lower IRI value depicting asmoother ride. This Transportation Performance Measurement reports the average IRIcalculation determined from laser-measured elevation changes in each wheelpath.
Publisher:
State of Michigan
Collection:
State Agencies Geospatial Data
Place:
Michigan, United States
Subject:
Transportation
Types:
Dataset and Service
Year:
2010-2011
Contributed by:
Michigan State
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