Practice question

What is the purpose of the disconnect switch or service panel at a traffic signal installation?

  1. To control the signal timing
  2. To provide a means of safely disconnecting power to the entire signal system
  3. To connect the signal to the communication network
  4. To monitor the detection system

Answer: B — To provide a means of safely disconnecting power to the entire signal system

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