In a road research project, older drivers were asked to read street names as soon as they were able as they were approaching an intersection. The signs were always on the farsides of the intersection but could be either on the right or left side. Intersections of three levels of compplexity were used. A repeated measures design was used. All main effects and all but one of the interactions were significant. The legibility distances obtaind from 864 trials using 18 subjects showed that Diamond Grade and VIP Diamond Grade sheeting were equivalent but that both were significantly superior to High Intensity Grade sheeting which was in turn significantly superior to Engineering Grade. The differences among sheeting grades were more apparent at the more complex intersections. The viewing conditions on some of the streets resulted in reduced visibility and conspicuity causing markedly reduced legibility distances. There were no performance differences based on gender. The implications for driving safety were discussed in the context of visual information processing workload, divided attention and multitasking.

  • Supplemental Notes:
    • See also PB94-133659. Sponsored by Minnesota Dept. of Transportation, St. Paul, Office of Research Administration.
  • Corporate Authors:

    University of Minnesota, Minneapolis

    Center for Transportation Studies, 511 Washington Avenue, SE
    Minneapolis, MN  United States  55455-0375
  • Publication Date: 1996-2


  • English

Media Info

  • Pagination: 40 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00730653
  • Record Type: Publication
  • Report/Paper Numbers: MN-RC-96-07
  • Files: TRIS, ATRI
  • Created Date: Feb 3 1997 12:00AM