Research notes : reflecting on road signs.

Details

• Alternative Title:
  Reflecting on road signs.
• Corporate Creators:
  Oregon. Dept. of Transportation. Research Unit
• Subject/TRT Terms:
  • Traffic signs
  • Reflective signs
  • Retroreflectivity
  • Sign sheeting
  • Service life
  • Loss and damage
  • Variability
• Publication/ Report Number:
  RSN 01-06
• Resource Type:
  Tech Report
• Geographical Coverage:
  Oregon
• Corporate Publisher:
  Oregon. Dept. of Transportation. Research Unit
• Abstract:
  Signs need to be visible and readable at night as well as during the day. For nighttime visibility, signs are illuminated through “retroreflection.” flection occurs when light rays (e.g. from vehicle headlights) strike the surface and are reflected back toward the source of light. ; The age of the signs in the study covered a 12-year span, with signs installed from 1985 to 1997. y had retroreflectivity levels above minimum ODOT standards. No consistent relationship was found between the age of signs and their retroreflectivity. Also, the physical orientation of road signs appeared to have little or no effect on their levels of retroreflectivity.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/22640/dot_22640_DS1.pdf
• File Type:
  [PDF - 374.60 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:eba6383456832e6c5362add53a0ab4039ccae7976127a256523448976bba478a3919cdfdaf94515e8a88a974631de7baea754e1920c20ae1bab14a11cad18be1