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Barrier transfer machine

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Golden Gate Bridge Road Zipper in action at the tail end of its morning run

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This Machine Lays Down Movable Barriers

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Road Zipper Shoulder Widening Animation

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The majestic movements of Auckland Harbour Bridge's barrier machine | Newshub

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TRAFFIC Drivers Get Extra Lane During Rush Hour with Zipper Barrier Transfer Machines

A barrier transfer machine, also known as zipper machine or road zipper, is a heavy vehicle used to transfer concrete lane dividers, such as jersey barriers, which are used to relieve traffic congestion during rush hours. Many other cities use them temporarily during construction work. The lanes created by the machine are sometimes referred to as "zipper lanes".
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