CHANGEABLE-MESSAGE DISPLAYS: SOME DESIGN CONSIDERATIONS
DESIGN CONSIDERATIONS FOR PUBLIC SAFETY DISPLAY SYSTEMS THAT UTILIZE THE ELECTRONIC COMPUTERS ARE EXPANDED UPON. ESSENTIALLY, THE DESIGN FEATURES ARE CLASSIFIED ACCORDING TO (1) LEGIBILITY, (2) VIEWING ANGLE AND READABILITY, (3) COLOR, AND (4) CONTROLS. LEGIBILITY IS DEEMED THE MOST IMPORTANT REQUIREMENT FOR PUBLIC SAFETY DISPLAYS; LETTER TYPE AND LAMP SPACING INCLUDING DIMMING, AND MATRIX CONFIGURATIONS ARE DWELT UPON AT LENGTH. VIEWING ANGLE AND HENCE READABILITY DEPEND ON CONTRAST, NOT BRIGHTNESS. COLOR AND ITS IMPACT MUST BE TAKEN INTO ACCOUNT. CONTROLS, ON POSSIBLE FUTURE REQUIREMENTS AND ACTUAL CAPABILITIES.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309020530
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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.
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Corporate Authors:
Highway Research Board
2101 Constitution Avenue, NW
Washington, DC 20418 -
Authors:
- Brooks, William
- Nelson, David
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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
- Features: Figures;
- Pagination: p. 41-43
- Monograph Title: THE CHANGEABLE-MESSAGE CONCEPT OF TRAFFIC CONTROL
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Serial:
- Highway Research Board Special Report
- Issue Number: 129
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Color; Computers; Design; Lamps; Legibility; Lettering; Variable message signs
- Uncontrolled Terms: Design features
- Old TRIS Terms: Letters
- Subject Areas: Design; Highways; Operations and Traffic Management;
Filing Info
- Accession Number: 00226395
- Record Type: Publication
- ISBN: 0309020530
- Files: TRIS, TRB, ATRI
- Created Date: Feb 3 1973 12:00AM