POOR VISIBLITY UNDER LOW-BEAM HEADLIGHTS: A COMMON CAUSE OF WRONG-WAY DRIVING

Through selected case studies, this paper illustrates the way in which the inadequate visibility of road signs and pavement markings at night contributes to wrong-way driving. A concept termed the keg of legibility, which delineates the limits of nighttime visibility under low-beam headlights, is described. The application of the keg-of-legibility concept to the placement of signs, markings, and additional devices that help guide the motorist through the intersection of a four-lane divided highway and another road is discussed. Examples of wrong-way entry on roads having poor geometrics are used to emphasize the need for such guidance. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References;
  • Pagination: pp 52-56
  • Monograph Title: Lighting, visibility and railroad-highway grade crossings
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00168084
  • Record Type: Publication
  • ISBN: 0309026539
  • Report/Paper Numbers: HS-022 157
  • Files: TRIS, TRB
  • Created Date: Jan 30 1989 12:00AM