00633357

Component

http://onlinepubs.trb.org...trr/1993/1381/1381-005.pdf

https://scholar.google.co...pson&publication_year=1993

Track managers of military, local, and industrial railroads as well as low-volume branch lines and yards of larger railroads need an objective and repeatable method to assess track that can be used as a basis to evaluate current conditions, predict future conditions, establish deterioration rates, formulate long-range budgets, and determine and prioritize renewal projects. In response to this need, the U.S. Army Construction Engineering Research Laboratories in conjunction with the University of Illinois developed condition indexes for rail, joint, and fastenings; ties; and ballast, subgrade, and roadway component groups. An overall composite condition index for railroad track, as a whole, was also developed. The indexes are based on data obtained from a panel of track experts assessing a variety of track conditions through the use of numerical ratings. A weighted deduct-density model is used to translate the panel ratings into meaningful indexes that are computed from routinely collected visual and rail flaw inspection information. The development of those indexes is described.

This paper appears in Transportation Research Record No. 1381, Recent Issues in Rail Research. 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

01405140

English

p. 42-52

1993

Transportation Research Record

0309054249

Figures (3) ; References (30) ; Tables (6)

Ballast (Railroads); Defects; Inspection; Rail fasteners; Rail joints; Railroad rails; Railroad ties; Railroad tracks; Subgrade (Pavements); Vision

Condition indexes

Design; Highways; Railroads

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