00469174

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http://onlinepubs.trb.org...trr/1987/1128/1128-006.pdf

https://scholar.google.co...rson&publication_year=1987

Counties and other local highway agencies continually use visual or subjective rating systems for routine and periodic road inspections. In a study of unpaved roads in Indiana, a subjective rating of unpaved roads was evaluated. Using a rating scale ranging from 0 to 5 for worsening road condition, regression relationships were determined among a panel condition rating and measured road roughness number, average rater speed and visually rated corrugation, potholes, rutting and gravel looseness. As expected, the panel condition rating worsened with increasing roughness, and average rater speed decreased with increasing panel condition rating. However, because most of the roads studied were in reasonable condition, considerble reduction in average speed was not experienced. An examination of road distresses also showed that corrugations and potholes were more related to panel condition rating than the other distresses. The results were used to suggest a basis for selecting maintenance activity based on the panel condition rating, present serviceability rating, roughness, and average speed. A comparison of ratings by the study panel from Purdue and panels from two counties indicated that the county panels generally rated their roads to be in better condition than the Purdue panel. However, in any subjective rating, consistency within any group is the most important consideration.

Publication of this paper sponsored by Committee on Low-Volume Roads. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01418142

pp 53-61

1987

Transportation Research Record

0309045053

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Figures (10) ; Maps (1) ; References (15) ; Tables (5)

Condition surveys; Corrugations (Defects); Counties; Defects; Low volume roads; Pavement distress; Pavement performance; Pavements; Potholes; Ratings; Regression analysis; Road raters; Roughness; Speed; Surveying; Unpaved roads

Subjective analysis; Visual surveys

Indiana

Indiana

Data and Information Technology; Highways; Pavements; I23: Properties of Road Surfaces

TRIS, TRB, ATRI

Jun 30 1988 12:00AM

• A MICROCOMPUTER PROGRAM TO ASSIST IN LOW-VOLUME ROAD REHABILITATION DECISION MAKING
• A MICROCOMPUTER PROGRAM TO EVALUATE THE BENEFITS AND COSTS OF ALTERNATIVE INVESTMENT STRATEGIES ON LOW-VOLUME LOCAL RURAL ROADS
• CORPS OF ENGINEERS LOW-VOLUME ROAD DESIGN
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• ORGANIZATION AND MANAGEMENT OF ROAD MAINTENANCE IN DEVELOPING COUNTRIES
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• ROAD DETERIORATION IN DEVELOPING COUNTRIES: FINANCIAL REQUIREMENTS
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• TECHNICAL OPTIONS FOR ROAD MAINTENANCE IN DEVELOPING COUNTRIES AND THE ECONOMIC CONSEQUENCES