Snow on LED Traffic Signals

Snow and ice buildup on traffic lights during storms is a safety issue for vehicular traffic. Attempts to mitigate this issue have met with limited success. Replacement of existing traffic lights with lower power light emitting diode (LED) lights have made the problem even more of an issue, due to reduction in the amount of heat available to melt ice and snow. The Colorado Department of Transportation (CDOT) seeks a solution that will maintain the low power consumption of the LED lights, but not require applications of coatings or cleaning of ice and snow during storms.


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    • Status: Active
    • Contract Numbers:


    • Sponsor Organizations:

      Colorado Department of Transportation

      4201 East Arkansas Avenue
      Denver, CO  United States  80222
    • Project Managers:

      Reeves, David

    • Performing Organizations:

      University of Colorado, Denver

      Denver, CO  United States 
    • Principal Investigators:

      Rorrer, Ronald

    • Start Date: 20130805
    • Expected Completion Date: 0
    • Actual Completion Date: 20150105
    • Source Data: RiP Project 36220

    Subject/Index Terms

    Filing Info

    • Accession Number: 01517462
    • Record Type: Research project
    • Source Agency: Colorado Department of Transportation
    • Contract Numbers: 40.06
    • Files: RIP, STATEDOT
    • Created Date: Mar 9 2014 1:00AM