A brief overview is presented of the wide variety of highway characteristics, vehicles, people and other objects that must be made conspicuous. It is clear that conspicuity is important for safety and for smooth traffic operation. The complexity of requirements for conspicuity is indicated. Color and luminance contrast, relative luminance, relative contrast and relative size have been shown to be very important factors for conspicuity and recognition. A few examples indicated some of the research which has been carried out in related areas. Other examples are given to show practical application of these factors for safety and smooth operation of traffic.

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  • Supplemental Notes:
    • Presented at the Symposium on Conspicuity on the Highway, St. Paul, Minnesota, 24-26 June 1980. 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
  • Corporate Authors:

    Transportation Research Board

    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Authors:
    • Forbes, T W
  • Publication Date: 1981-5

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 3-9
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00335155
  • Record Type: Publication
  • Report/Paper Numbers: HS-032 444
  • Files: HSL, TRIS, TRB
  • Created Date: Oct 28 1981 12:00AM