Practice question

What does 'full cutoff' mean when describing a roadway luminaire?

  1. The luminaire is completely blocked from producing any light
  2. No light is emitted at or above the horizontal plane (90 degrees) and limited light above 80 degrees
  3. The light output has been reduced by 50%
  4. The luminaire has been disconnected from power

Answer: B — No light is emitted at or above the horizontal plane (90 degrees) and limited light above 80 degrees

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Practice more: IMSA Roadway Lighting I Practice Questions - IMSA Roadway Lighting Technician Level I Certification Exam Exam →