RAISED REFLECTIVE LANE MARKERS FOR URBAN ROADWAYS

FOUR REPRESENTATIVE BRANDS OF RAISED REFLECTIVE ROADWAY MARKERS WERE EVALUATED FOR ONE YEAR. REFLECTIVITY OF THE MARKERS FROM ILLUMINATION OF AUTOMOBILE HEADLAMPS WAS MEASURED PERIODICALLY USING A LUCKIESH TAYLOR BRIGHTNESS METER. THE REFLECTIVITY OF ALL BRANDS DROPPED IMMEDIATELY TO A MEAN OF ABOUT 50% OF THE NEW REFLECTIVITY, THEN VARIED ABOVE AND BELOW THIS VALUE DEPENDING ON WEATHER AND FOULING. THE LOSS OF MARKERS FROM THE ROADWAY WAS EVALUATED. THE EPOXY ADHESIVES WERE SATISFACTORY FOR PLASTIC MARKERS, ALL LOSSES WERE DUE TO FAILURE OF THE ASPHALT ROADBED UNDER THE MARKERS. FAILURE OF THE PLASTIC MARKERS WAS NEGLIGIBLE. THE CERAMIC MARKERS SUFFERED DRASTIC LOSS OF THE REFLECTIVE ELEMENTS. /AUTHOR/

• Corporate Authors:

  Louisiana Department of Highways

  P.O. Box 44245, Capitol Station
  Baton Rouge, LA  United States  70804
• Authors:
  • Calhoun, J D
• Publication Date: 1970-11

Subject/Index Terms

• TRT Terms: Asphalt pavements; Ceramic materials; Epoxides; Failure; Lane lines; Plastics; Raised separators; Reflectivity; Road marking materials
• Old TRIS Terms: Epoxy; Traffic marking materials
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00217109
• Record Type: Publication
• Report/Paper Numbers: 104 pp
• Files: TRIS, STATEDOT
• Created Date: Jun 22 1971 12:00AM