» Vertical panels, barricades, drums and cones are used to alert drivers and to guide them safely through safely work zones.

Vertical panels, barricades, drums and cones are used to alert drivers and to guide them safely through safely work zones.

True.
False.
Explanation

Vertical panels, barricades, drums and cones are the most commonly used devices to guide drivers safely through a work area. You must obey these traffic control devices unless there is a flagger giving you different instructions.

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