EVALUATION OF HIGH-INTENSITY SHEETING FOR OVERHEAD HIGHWAY SIGNS

The purpose of this research was to determine the feasibility of using high-intensity sheeting on overhead highway signs without external illumination. The brighness of five high-intensity overhead signs without illumination was compared with that of five conventional signs with illumination. All experimentation was conducted in the field under the physical and environmental conditions experienced by the highway user. Luminance measurements were made with a telephotometer at the driver's eye position in 11 domestic automobiles. A total of 4821 luminance measurements were recoreded from the travel lanes of illuminated and nonilluminated roadways. It was concluded that external lighting can be eliminated through the use of high-intensity sheeting on many overhead signs without adversely affecting the service to motorists. /Author/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1976/611/611-004.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=EVALUATION+OF+HIGH-INTENSITY+SHEETING+FOR+OVERHEAD+HIGHWAY+SIGNS&author=R.+Robertson&publication_year=1976
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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Visibility. 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:
  • Robertson, R N
• Publication Date: 1976

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 28-34
• Monograph Title: Railroad-highway crossings, visibility, and human factors
• Serial:
  • Transportation Research Record
  • Issue Number: 611
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Brightness; Field studies; Highway safety; Illuminated traffic signs; Legibility; Lighting; Overhead traffic signs; Photometers; Sheathing; Traffic signs
• Subject Areas: Geotechnology; Highways; Materials; Safety and Human Factors;

Filing Info

• Accession Number: 00163041
• Record Type: Publication
• ISBN: 0309025877
• Report/Paper Numbers: HS-021 004
• Files: HSL, TRIS, TRB
• Created Date: Oct 13 1977 12:00AM