Some measures for improving night visibility at highway intersections.

Details

• Creators:
  Vaswani, N. K
• Corporate Creators:
  Virginia Highway & Transportation Research Council
• Subject/TRT Terms:
  • Visibility
• Publication/ Report Number:
  VHTRC 77-R44
• Resource Type:
  Tech Report
• Geographical Coverage:
  Virginia
• Corporate Publisher:
  Virginia Transportation Research Council (VTRC)
• Abstract:
  Through selected case studies, this report illustrates how the inadequate visibility of road signs and pavement markings at night contributes to wrong-way driving. A concept termed "keg of legibility" for visibility at night has been developed by the author to delineate the limits of night visibility under low beam headlights. The report discusses the application of the keg of legibility to the placement of signs, markings, and additional devices that can be used to help inform the motorist who is to negotiate a four-lane divided highway and to guide him through the intersection. Cases of poor road geometrics are cited to emphasize the need for such information and guidance.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18853/dot_18853_DS1.pdf
• File Type:
  [PDF - 3.81 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:470407a6d6df868714c7bfddfbab1d486cf2a79f185cb47869baa8dd21b2de5e