Compliance Testing for Locomotive LED Headlights and Auxiliary Lights, Phase IV

Details

• Creators:
  Meza-Arroyo, Manuel ; Shibata, Peggy A. ; Sprague, James K. ; Woods, Sean
• Corporate Creators:
  United States. Department of Transportation. Federal Railroad Administration. Office of Railroad Policy and Development ; United States. Department of Transportation. Federal Railroad Administration. Office of Research, Development and Technology
• Subject/TRT Terms:
  • Acceptance tests
  • Locomotives
  • Headlamps
  • Light emitting diodes
  • Photometry
  • Standards
  • Cold weather
  • Locomotive headlights
  • auxiliary lights
  • LED
  More +
• Publication/ Report Number:
  DOT/FRA/ORD-21/16
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Technical Report, July 2020
• Contracting Officer:
  Omar, Tarek
• Corporate Publisher:
  United States. Department of Transportation. Federal Railroad Administration. Office of Research, Development, and Technology ; United States. Federal Railroad Administration. Office of Railroad Policy and Development
• Abstract:
  This report describes the work performed during Phase IV compliance testing of light-emitting diode (LED) fixtures used as locomotive headlights and auxiliary lights. The purpose was to study the performance of the lamps under severe cold weather conditions. Researchers sought to determine whether LED lamps could melt a 1/4-inch-thick layer of ice from a lens surface and whether the lamps would accumulate a coating of snow and ice when operated in the presence of very cold, windblown snow. Throughout the testing, halogen lamps, currently standard equipment on freight locomotives, were used as a performance benchmark.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/55517/dot_55517_DS1.pdf
• File Type:
  [PDF - 15.51 MB]
• Collection(s):
  Federal Railroad Administration
• Main Document Checksum:
  urn:sha256:eeaf29ed40f811de9315258880dd80c66d7fd4a55007051d1e50fd2f5a6e5c1f