CONSPICUITY OF TRAFFIC CONTROL DEVICES: A COMPARISON OF STOP AND GIVE WAY SIGNS AND ALPHABETIC AND SYMBOLIC WARNING SIGNS

An earlier report (AIR 318-1) suggested that stop signs might be more conspicuous than give way signs and symbolic warning signs more conspicuous than their alphabetic counterparts. This latter observation was consistent with the result of forbes in 1968. A laboratory comparison of the stop and give way and of symbolic and alphabetic signs using projected road scenes measured conspicuity in terms of probability of seeing during a short exposure duration that did not permit search. Symbolic signs were found to be more conspicuous and their message more readily recognised than alphabetic signs and this attributed to their bolder internal structure. Stop signs were also significantly more conspicuous and more recognisable than the give way signs, a difference that cannot be due to differences in size or brightness or border treatment since the give way sign is both larger and brighter than the stop sign and has a bolder border. The larger legend of the stop sign is likely to be a factor favouring its conspicuity: a shape and colour may also contribute but these factors need further investigation. (a)/TRRL/

  • Corporate Authors:

    ARRB Group Limited

    500 Burwood Highway
    Vermont South, Victoria    3133
  • Authors:
    • JENKINS, S E
    • Cole, B L
  • Publication Date: 1979-7

Media Info

  • Features: References; Tables;
  • Pagination: 6 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00303512
  • Record Type: Publication
  • Source Agency: ARRB Group Limited
  • Report/Paper Numbers: AIR 218-2 Monograph
  • Files: ITRD, TRIS, ATRI
  • Created Date: Mar 20 1980 12:00AM