THE PERCEPTION OF VARIABLE MESSAGE SYMBOLIC ROAD SIGNS: REACTION TIME STUDIES

A series of studies examines the relative perceptibility of symbols for use in variable message signs on high speed roads. The symbols were generated at 1/4 scale in the laboratory, using a computer driven 30 x 30 lamp matrix. Three different task environments were used; one requiring the subjects to name the symbols whilst performing another complex task, the second a simple naming of the symbol and a third, discriminating and then responding with a 6 choice keyboard. In each case the response latency was measured, and whilst some significant differences between symbols were found, it is concluded that response latency is not sufficiently sensitive to discriminate reliably between the perceptual features of the symbols. /Author/

  • Corporate Authors:

    Aston University, England

    Department of Applied Psychology, Gosta Green
    Birmingham B4 7ET,   England 
  • Authors:
    • Easterby, R S
    • Cox, D E
    • Hughes, A W
  • Publication Date: 1977-5

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 50 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00189988
  • Record Type: Publication
  • Source Agency: National Safety Council Safety Research Info Serv
  • Report/Paper Numbers: AP 72
  • Files: TRIS
  • Created Date: May 11 1979 12:00AM