In work zones, barriers such as drums, panels and cones are used to:
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Distract drowsy drivers.
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Reduce the flow of traffic.
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Warn drivers of potentially dangerous conditions.
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Keep workers out of the work zone.
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Explanation
Barriers such as drums, vertical panels, cones and tubular markers warn drivers of unusual or potentially dangerous conditions in work areas, and are used to guide drivers safely through work zones.
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What are flashing arrow panels used for?
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