Traffic bollard placing truck.
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Saw the one on the golden gate bridge in operation once. It was moving those big barriers though.
How are they stacked on the trailer?
They aren't....it's moving the barrier from one side of the lane to the other.
Ah, thank you! Duh now I remember once seeing the bollard operation on the Tappan Zee bridge.
Yup, they are there to prevent head on accidents that were to often. But they are also used to change lane numbers depending on the traffic flow.
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