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C1Difficulty 1/5

What is the duration of a traffic-signal cycle?

Correct answer

The time needed to complete one sequence of indications.

It is the time needed to complete one sequence of the system’s indications. In a repeating cycle, it can be measured from the start of a reference indication to the next start of that same indication at the same point in the sequence. It is not just the red or green time or a transition between two colours. Duration may vary with the control system.

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  • The time needed to complete one sequence of indications.

  • Only the time for which the red light remains on.

  • Only the transition time from green to amber.

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