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Title:Update of Condition Rating Survey (CRS) Calculation/Prediction Models Phase 2. CRS Calculation Model Development
Author(s):Heckel, Laura; Ouyang, Yanfeng
Subject(s):CRS, calculation models
Abstract:The Illinois Department of Transportation (IDOT) surveys every state-maintained roadway in a two-year cycle. Images of the roads are collected digitally and viewed at workstations in the office. The five predominant distresses and their severities are determined and inputted into software that calculates a Condition Rating Survey (CRS) value, using models determined through previous research. The object of Phase 2 of this project was to revise the existing models and develop new models for pavement types that currently do not have models. The model form used consists of determining CRS as a function of roughness, rutting and faulting (where appropriate), and recorded distresses and severities. When the research was completed, eight existing models were revised and three new models were developed. Also, eight of the models use 9.0 as the intercept, while not compromising accuracy.
Issue Date:2007-06
Genre:Technical Report
Publication Status:published or submitted for publication
Peer Reviewed:not peer reviewed
Sponsor:Illinois Department of Transportation
Rights Information:No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161
Date Available in IDEALS:2013-11-13

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