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International Roughness Index: Michigan, 2010-2011

Attribute Value
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Creator:
State of Michigan
Description:
International Roughness Index is a statistic of a pavement surface s longitudinal profile that quantifies ride quality as the estimated accumulation of a passenger vehicle s vertical movement (in inches) as it drives over the subject road for a distance of one mile. The reported IRI units are, therefore, inches-per-mile, with a lower IRI value depicting a smoother ride. This Transportation Performance Measurement reports the average IRI calculation determined from laser-measured elevation changes in each wheel path.
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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