United States Department of Transportation
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners.
As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
i
Assessing IRI vs. PI as a measurement of pavement smoothness : final report, June 2006.
-
2006-06-07
[PDF-1.76 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Final report.
-
Corporate Publisher:
-
Abstract:A Pavement smoothness specification that allows either the International Roughness Index (IRI) or Profile Index (PI) to measure pavement smoothness would be advantageous to both industry and MoDOT. This brief study provides for MoDOT an understanding of the relationship between IRI and PI, an analysis comparing the two systems, a review of potential specifications and offers a “smoothness adjustment table” that would fit into Section 502.15.3 of the Missouri specifications. Furthermore safeguards against the potential manipulation of the data within both IRI and PI systems are discussed. With proper certification procedures for equipment and operators and a random verification program on the measurement of smoothness, it is unlikely that the state DOT will encounter a problem with systematic alterations of inertial profiling data. Sample specifications from Connecticut DOT, Ohio DOT and Minnesota DOT are included in the report as they are good examples of specifications that MoDOT may wish to use as a pattern for their specification.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
