LOCATING FAULTS INDICATED BY POLYGON DISPLAYS

In a polygon display, each system parameter is indicated by the radial distance of one vertex of a polygon from the centre. Earlier results showed that the detectability of faults is enhanced by increasing the number of polygon vertices from four to twenty but a practical display-control system also requires the absence of adverse effects with more parameters. Speed and accuracy of responses when peripherally viewing a polygon display with an inset dynamic task were investigated for two tasks: detecting the presence of an out-of-limits parameter and locating the most deviant parameter. The number of vertices in the display was varied, and the vertices were permitted either a wide or a narrow range of variation. Performance was best when the deviation of the extreme vertex was outwards. As the number of parameters increased from 4 to 20, speed and accuracy in detecting a fault remained constant or improved if system variability was low but locating the most extreme parameter became poorer, especially when the other vertices varied widely. (A) For the covering abstract, see IRRD 892069.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0444814779
• Corporate Authors:

  Elsevier

  Sara Burgerhartstraat 25
  1055 KV Amsterdam,   Netherlands 
• Authors:
  • MACRAE, A W
  • MILLIGAN, S
• Publication Date: 1996

Language

• English

Media Info

• Features: References;
• Pagination: p. 195-201
• Serial:
  • VISION IN VEHICLES V. FIFTH INTERNATIONAL CONFERENCE, GLASGOW, 1993
  • Publisher: Elsevier

Subject/Index Terms

• TRT Terms: Conferences; Driver information systems; Drivers; Information display systems; Symbols; Visual display units
• Uncontrolled Terms: Visual display
• ITRD Terms: 8525: Conference; 1772: Driver; 583: Symbol; 8630: Visual display
• Subject Areas: Data and Information Technology;

Filing Info

• Accession Number: 00741020
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-444-81477-9
• Files: ITRD
• Created Date: Oct 30 1997 12:00AM