Barricades, drums, cones and vertical panels are the most commonly used devices to guide drivers safely through a work zone.
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False.
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True.
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Explanation
Work zones can be difficult areas to drive in, given the presence of workers and other obstacles. Barricades, drums, cones, and vertical panels are often used to help you travel safely thorough work zones. Always obey these traffic control devices, unless a worker or law enforcement officer tells you otherwise.
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