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What does traffic lights showing a steady vertical white stripe on a circular black background indicate?

Correct answer

They permit passage to continue straight ahead.

Traffic lights consisting of a steady vertical white stripe on a dark background indicate to the vehicles to which they apply that passage is permitted if they are going straight ahead. If the stripe were horizontal, it would indicate that they must stop, as if it were a red light.

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  • They permit passage to continue straight ahead.

  • Stopping is compulsory, as if it were a steady amber light.

  • They prohibit passage.

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