HUMAN FACTORS REQUIREMENTS FOR REAL-TIME MOTORIST INFORMATION DISPLAYS. VOLUME 9. A STUDY OF PHYSICAL DESIGN REQUIREMENTS FOR MOTORIST INFORMATION MATRIX SIGNS

The purpose of this study was to identify the physical design requirements of changeable message lamp matrix signs. Design characteristics addressed include sequential and run-on displays, message length, words per line, number of lines, display rates, legibility, bulb loss, and symbolic substitution. Effects of driver workload were also addressed. The studies were conducted first in a laboratory equipped with a rear projection screen and subject response controls. Slides and motion picture film were used with controlled exposures to obtain subject responses. Percent correct response was the evaluation criterion for all variables except symbolic substitution which related to association. Selected laboratory results were subjected to limited field validation in a controlled driving environment. The field studies considered subject performance under both "unloaded" and "loaded" conditions.

• Supplemental Notes:
  • See alos Volume 10, PB81-173692.
• Corporate Authors:

  Texas Transportation Institute

  Texas A&M University System, 1600 E Lamar Boulevard
  Arlington, TX  United States  76011

  Federal Highway Administration

  Traffic Systems Division, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Messer, C J
  • Stockton, W R
  • Mounce, J M
  • Andersen, D A
  • Turner, J M
• Publication Date: 1978-2

Media Info

• Pagination: 193 p.

Subject/Index Terms

• TRT Terms: Communication; Design; Driver information systems; Drivers; Freeways; Guidelines; Human factors; Human factors engineering; Information display systems; Needs assessment; Real time control; Real time data processing; Reviews; Traffic control; Traffic signals; Variable message signs; Vision
• Uncontrolled Terms: Design criteria; User needs
• Old TRIS Terms: Display devices; Displays; Visual communication
• Subject Areas: Design; Highways; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control;

Filing Info

• Accession Number: 00328984
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FHWA-RD-78- 13 Final Rpt.
• Contract Numbers: DOT-HS-11-8505
• Files: NTIS, TRIS, USDOT
• Created Date: May 21 1981 12:00AM