Update of Condition Rating Survey (CRS) Calculation/Prediction Models Phase 2. CRS Calculation Model Development

Heckel, Laura; Ouyang, Yanfeng

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https://hdl.handle.net/2142/45997 Copy

Description

Title

Update of Condition Rating Survey (CRS) Calculation/Prediction Models Phase 2. CRS Calculation Model Development

Author(s)

• Heckel, Laura
• Ouyang, Yanfeng

Issue Date

2007-06

Keyword(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.

Series/Report Name or Number

FHWA-ICT-07-009

ISSN

0197-9191

Type of Resource

text

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http://hdl.handle.net/2142/45997

Sponsor(s)/Grant Number(s)

Illinois Department of Transportation

Copyright and License Information

No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161

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