MINIATURE PLASTIC RETROFLECTORS ARE BEING EVALUATED FOR USE ON HIGHWAY CENTERLINES

STRIPS OF REFLECTORS, ONLY 1/8 INCH THICK, MAY PREVENT CENTERLINES' BEING OBSCURED BY WATER ON RAINY NIGHTS, BATTELLE PHYSICIST DANIEL R. GREISER EXPLAINS. RETROREFLECTORS DO NOT REQUIRE EXACT ALIGNMENT TO REFLECT LIGHT TO THE DRIVER'S EYES. THE PRINCIPLE WAS USED TO MAKE THE MIRROR PLACED ON THE MOON BY THE APOLLO 11 CREW TO BOUNCE BACK LASER BEAMS SENT FROM EARTH. A PROBLEM WITH A NUMBER OF CURRENTLY USED HIGHWAY MARKING DEVICES, BATTELLE POINTS OUT, IS THAT THEIR DESIGN REQUIRES THE REFLECTORS TO BE AS MUCH AS 3/4 INCH ABOVE THE PAVEMENT; AT THIS HEIGHT, SNOWPLOWS OFTEN CHIP THEM OFF. /ARTICLE/

• Corporate Authors:

  Battelle Memorial Institute

  Columbus, OH  United States 
• Publication Date: 1970-5

Subject/Index Terms

• TRT Terms: Center lines; Reflectorized materials; Retroreflection; Road marking materials
• Old TRIS Terms: Retrodirective reflection; Traffic marking materials
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00225821
• Record Type: Publication
• Source Agency: Chemical Engineering News
• Files: TRIS
• Created Date: Jun 15 1970 12:00AM