THE RELATIVE EFFECT OF DEW FORMATION ON REFLECTIVE SIGN MATERIALS

STILL AND MOTION PICTURES RECORDED THE EFFECTS OF SIMULATED DEW (STEAM) IN THE LABORATORY AS WELL AS ACTUAL DEW FORMATION IN FIELD TESTS. THREE SIGN MATERIALS WERE USED FOR COMPARISON THROUGHOUT THE TESTS. THE EFFECT OF DEW FORMATION WAS RECORDED USING TIME LAPSE PHOTOGRAPHY. ALL MATERIALS DARKENED GRADUALLY AS DEW FORMED ON THE SIGNS; NONE OF THE MATERIALS EXHIBITED CONSISTENTLY BETTER LEGIBILITY. /AUTHOR/

• Corporate Authors:

  California Division of Highways

  Materials and Research Department
  Sacramento, CA  United States  95819

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Lowden, P R
  • Stoker, J R
• Publication Date: 0

Subject/Index Terms

• TRT Terms: Legibility; Materials; Reflective signs; Time lapse photography
• Uncontrolled Terms: Dew
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00215960
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: No D-4-84
• Files: TRIS, USDOT
• Created Date: Jan 31 1972 12:00AM