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                Safety Evaluation of Converting Traffic Signals From Incandescent to Light-Emitting Diodes
FHWA-HRT-13-070.pdf (1.06 MB)
      
  Publication Information
                  Publication Type:Summary Report
                  Publication Number:FHWA-HRT-13-070
              Abstract:Across the Nation, many agencies have been replacing conventional incandescent light bulbs in traffic signals with light-emitting diodes (LED). LEDs are primarily installed to reduce energy consumption and decrease maintenance. In addition, LEDs are expected to last much longer compared with incandescent bulbs and tend to age gradually. However, a recent study revealed several potential problems with LEDs, including their inability to melt snow and issues related to visual discomfort caused by glare at night.
              Publishing Date:July 2013
                                      Author(s):Srinivasan,
    
          Raghavan
              Carter,
    
          Daniel
              Publishing Office:Office of Safety Research and Development
                  FHWA Program(s):Safety
              Research
              AMRP Program(s):Safety Data and Analysis
              FHWA Activities:Highway Safety Information System
              Subject Area:Safety and Human Factors U.S. DEPARTMENT OF TRANSPORTATION

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