COLORED SIGNS AID MOTORISTS

WITHIN THE FORESEEABLE FUTURE LUMINOUS REFLECTORS MAY BE USED AS HIGHWAY MARKERS TO WARN MOTORISTS WHEN TEMPERATURE CHANGE WILL CAUSE ICING CONDITIONS. RESEARCHERS AT THE BATELLE MEMORIAL INSTITUTE OF FRANKFURT, GERMANY, HAVE REPORTED DEVELOPING THE REFLECTORS CONSISTING OF GROUND GLASS AND A LIQUID WHICH SHOWS GREEN WHEN THE TEMPERATURE IS ABOVE 45 DEGREES AND YELLOW WHEN IT DROPS TO 37 DEGREES. AT LOWER TEMPERATURES THE REFLECTOR COLOR CHANGES TO ORANGE AND THEN TO RED AS THE MERCURY GOES BELOW 30. THE REFLECTORS COULD BE MOUNTED ON EXISTING HIGHWAY GUIDEPOSTS. DURING DAYTIME HOURS, MOTORISTS WOULD ONLY HAVE TO SWITCH ON HEAD- LIGHTS TO GET A READING FROM THE REFLECTORS. /MRC/

• Supplemental Notes:
  • Vol 68, No 13, P 6
• Publication Date: 1971-4-1

Media Info

• Serial:
  • Michigan Roads and Construction
  • Publisher: Baker Publishing Company

Subject/Index Terms

• TRT Terms: Color; Glass; Liquids; Reflectorized materials; Road markings; Signs; Temperature
• Old TRIS Terms: Traffic marking
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00226007
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 2 1971 12:00AM