This paper reviews recent research on the visibility of and driver reaction to various work zone traffic control devices. The greatest problem with advance signing is credibility, since the work zone situation will frequently change after the sign is erected. The recognition distance of arrow boards is between 725-1175 feet, depending on speed. They are most useful for lane closures by promoting earlier merging. Only in specific situations are they useful for lane diversion. A study of concrete barrier visibility focused heavily on the durability of six reflective products over two years. From a visibility perspective, reflectors were superior to reflectorized tape. A study of cones, tubes, barricades, panels, drains, and steady burn lights indicates relatively successful detection and path guidance performance by most devices. One of the major deterrents to effectiveness is not the device, but the position, dirty, or overturned devices destroy the visual line or path created by channelizing devices. Therefore, use of appropriate devices is important but diligent set-up and care of the work zone is equally important.

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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
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    Transportation Research Board

    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Authors:
    • Pain, R F
  • Publication Date: 1981-5

Media Info

  • Features: References; Tables;
  • Pagination: p. 35-37
  • Serial:

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Filing Info

  • Accession Number: 00335162
  • Record Type: Publication
  • Report/Paper Numbers: HS-032 451
  • Files: HSL, TRIS, TRB
  • Created Date: Oct 28 1981 12:00AM