USE OF CHANGEABLE-MESSAGE SIGNS BY PORT AUTHORITY

THE ADVANTAGES AND DISADVANTAGES OF USING BLANK-OUT ARROWS AND X'S, MATRIX SIGNS, DRUM TYPE SIGNS, AND MANUAL FLIP SIGNS ARE BRIEFLY COVERED. BLANK-OUT ARROWS AND X'S ARE USED TO INDICATE LANE OPENINGS AND CLOSURES, HOWEVER, THEY ARE DIFFICULT TO SEE UNDER DIRECT SUNLIGHT. MATRIX SIGNS CAN BE UTILIZED TO CONVEY AN UNLIMITED NUMBER OF MESSAGES, BUT THE NEW STANDARDS DESIGNED BY THE MANUAL OF UNIFORM TRAFFIC CONTROL DEVICES FOR STREET AND HIGHWAYS MAY LIMIT THE EFFECTIVENESS OF THESE SIGNS. DRUM TYPE SIGNS CAN BE USED TO CHANGE COLORS AND YET COMPLY WITH THE NEW MANUAL'S STANDARDS FOR COLOR REQUIREMENTS, HOWEVER, THE SIGN IS LIMITED BY THE NUMBER OF MESSAGES THAT CAN BE PRESENTED PER DRUM. MANUAL FLIP SIGNS CAN BE PRODUCED QUICKLY AND INEXPENSIVELY, BUT ARE SELDOM CHANGED PROMPTLY TO CONFORM TO LOCAL TRAFFIC CONDITIONS.

• Record URL:
  • https://onlinepubs.trb.org/Onlinepubs/sr/sr129/129-004.pdf
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309020530
• Supplemental Notes:
  • 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:

  Highway Research Board

  2101 Constitution Avenue, NW
  Washington, DC    20418
• Authors:
  • Bender, Louis E
• Conference:
  • Conference on the Changeable-Message Concept of Traffic Control
  • Date: 1971-7-15 to 1971-7-16
• Publication Date: 1972

Media Info

• Media Type: Digital/other
• Pagination: p. 17-19
• Monograph Title: THE CHANGEABLE-MESSAGE CONCEPT OF TRAFFIC CONTROL
• Serial:
  • Highway Research Board Special Report
  • Issue Number: 129
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Color; Standards; Variable message signs
• Identifier Terms: Port Authority of New York and New Jersey
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00226388
• Record Type: Publication
• ISBN: 0309020530
• Files: TRIS, TRB, ATRI
• Created Date: Jan 29 1973 12:00AM