Practice question

What is the recommended procedure before performing firmware updates on a traffic signal controller in the field?

  1. No preparation is needed — just upload the new firmware
  2. An approved backup and compatibility check
  3. Disconnect all detectors before updating
  4. Remove the controller from the cabinet and update it in the shop only

Answer: B — An approved backup and compatibility check

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