Practice question

What is the proper method for verifying the accuracy of a controller's internal clock for time-based coordination?

  1. Compare it to a wristwatch
  2. Compare the controller clock to a GPS time reference and verify drift is within acceptable tolerance (typically ±1 second)
  3. Check that the display shows the correct date
  4. Verify the clock battery voltage

Answer: B — Compare the controller clock to a GPS time reference and verify drift is within acceptable tolerance (typically ±1 second)

The correct answer is shown above. Try the full quiz for additional practice.

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