Pavement performance measures for Ontario provincial highways

The current pavement performance measure used by the Ministry of Transportation Ontario (MTO is Optimal State of Repair (OSR), which relates to the percentage of provincial highways in "good" condition. OSR is calculated using the composite Pavement Condition Index (PCI), which combines the Ride Condition Index (RCI), based on International Roughness Index (IRI) measurements, and the Distress Manifestation Index (DMI). As part of the development and implementation of an Asset Management System, a comprehensive review of pavement performance measures was undertaken. The Ministry set out to determine what pavement performance measure(s) would best communicate the condition of the highway network and secure sufficient funding. A survey was carried out of performance measures used by other jurisdictions across North America. It found that many agencies were using IRI, especially in the USA where the Federal Highway Administration (FHWA) requires states to report road roughness on the IRI scale for inclusion in their Highway Performance Monitoring System (HPMS). However, results of the survey found that IRI does not change sufficiently on an annual basis to trigger allocation of funds. A composite index, similar to the PCI used in the Ministry's current performance measure was preferable.


  • English

Media Info

  • Pagination: 12p

Subject/Index Terms

Filing Info

  • Accession Number: 01389611
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Aug 23 2012 3:36AM