When are lane signals used?
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To show that a toll booth is open or closed.
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To show which lanes are opened or closed.
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When the direction of the flow of traffic changes during the day.
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All of the above.
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Explanation
Lane signals are used when the direction of the flow of traffic changes during the day. They are also used to show if a toll booth is open or closed, and to indicate which lane(s) drivers may travel in.
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