Practice question

What is the function of the load switch in a traffic signal cabinet?

  1. To switch between primary and backup power sources
  2. To switch power to individual signal head indications based on controller commands
  3. To monitor for conflicting signal displays
  4. To control the flash transfer relay

Answer: B — To switch power to individual signal head indications based on controller commands

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Practice more: IMSA Traffic Signal I Practice Questions - IMSA Traffic Signal Technician Level I Certification Exam Exam →