Procedures manual for the determination of International Roughness Index on HPMs sites in Oregon : operations and calibration.
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1990-01-01
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Abstract:The Oregon Department of Transportation (ODOT) is required to provide an annual measure of pavement condition based on International Roughness Index (IRI). The main coordination of this process with FHWA is done by the Highway Division's Planning Section. The data will be collected using a Mays Ride Meter (MRM). The Research Unit of the Materials and Research Section is responsible for calibration and operation of the MRM. The Data to be collected is on various highways across the State as directed by the Planning Section.
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