ELEMENTAL VERSUS COMPOSITE RATINGS

THE DIFFICULTY OF COMBINING THE RATINGS OF THE SEVERAL ELEMENTS INTO A COMPOSITE PERCENTAGE RATING IS DISCUSSED. THE RATINGS FOR THE ELEMENTS OF STRUCTURE, SERVICE AND SAFETY HAVE NO COMMON DENOMINATOR, AND THE RELATIVE WEIGHT OF EACH OF THESE ELEMENTS IS A MATTER OF JUDGEMENT AND NOT SUBJECT TO RATIONAL ANALYSIS. A POSSIBLE SOLUTION TO THE PROBLEM OF RETAINING THE INDEX OF EACH ELEMENT IN THE COMPOSITE RATING IS SUGGESTED: AN INDEX WOULD BE DESIGNED WHICH WOULD SHOW EACH COMPONENT ELEMENT AS AN IDENTITY. A PROPOSED THREE-INDEX IS PRESENTED FOR SUFFICIENCY RATINGS: STRUCTURE, SERVICE, SAFETY. IT IS CONCLUDED THAT THIS PROPOSED STREET-DIGIT INDEX SHOWS THE RANGE OF SUFFICIENCY AND RETAINS THE IDENTITY OF EACH ELEMENT.

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  • Supplemental Notes:
    • No 53, pp 30-31 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
  • Authors:
    • Campbell, M Earl
  • Publication Date: 1952

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  • Accession Number: 00200269
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Apr 10 1994 12:00AM