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- Q4863612 subject Q8266666.
- Q4863612 subject Q8343638.
- Q4863612 subject Q8668093.
- Q4863612 abstract "Barrier transfer machines, also known as zipper machines or road zipper, are heavy vehicles used to transfer concrete lane dividers, which are used to relieve traffic congestion during rush hours.The vehicle contains an S-shaped channel in its undercarriage which lifts the barrier segments (which may weigh over 1,000 pounds (454 kg)) off the road surface and transfers them over to the other side of the lane, reallocating traffic lanes to accommodate increased traffic for the currently dominant (peak) direction. These barriers are linked together with steel connectors to create a sturdy but flexible safety barrier.Moveable barriers are in permanent use in such cities as Auckland (Auckland Harbour Bridge); Montreal, Quebec; Philadelphia, Pennsylvania; the New York metropolitan area (notably the Tappan Zee Bridge and the western portion of the Long Island Expressway); Honolulu, Hawaii; San Juan, Puerto Rico; Boston, Massachusetts (for the Southeast Expressway); Washington, DC; Dallas, Texas; San Francisco (on the Golden Gate Bridge and Presidio Parkway); San Diego, California; and Sydney, New South Wales; many other cities use them temporarily during construction work.A variant of the machine uses two narrower machines running in tandem. This setup tends to be used in reversible lanes (also known as contraflow lanes) when the movable barrier is used to divide two directions of traffic—the narrower machines are less of an impediment to traffic in either direction. The lanes created by the machine are sometimes referred to as zipper lanes.".
- Q4863612 thumbnail Linkage_of_moveable_barriers.jpg?width=300.
- Q4863612 wikiPageWikiLink Q100.
- Q4863612 wikiPageWikiLink Q125841.
- Q4863612 wikiPageWikiLink Q16557.
- Q4863612 wikiPageWikiLink Q18094.
- Q4863612 wikiPageWikiLink Q2062395.
- Q4863612 wikiPageWikiLink Q2451739.
- Q4863612 wikiPageWikiLink Q3046430.
- Q4863612 wikiPageWikiLink Q3130.
- Q4863612 wikiPageWikiLink Q340.
- Q4863612 wikiPageWikiLink Q41211.
- Q4863612 wikiPageWikiLink Q44440.
- Q4863612 wikiPageWikiLink Q4707836.
- Q4863612 wikiPageWikiLink Q61.
- Q4863612 wikiPageWikiLink Q62.
- Q4863612 wikiPageWikiLink Q683705.
- Q4863612 wikiPageWikiLink Q758634.
- Q4863612 wikiPageWikiLink Q758638.
- Q4863612 wikiPageWikiLink Q8266666.
- Q4863612 wikiPageWikiLink Q8343638.
- Q4863612 wikiPageWikiLink Q8668093.
- Q4863612 wikiPageWikiLink Q948591.
- Q4863612 comment "Barrier transfer machines, also known as zipper machines or road zipper, are heavy vehicles used to transfer concrete lane dividers, which are used to relieve traffic congestion during rush hours.The vehicle contains an S-shaped channel in its undercarriage which lifts the barrier segments (which may weigh over 1,000 pounds (454 kg)) off the road surface and transfers them over to the other side of the lane, reallocating traffic lanes to accommodate increased traffic for the currently dominant (peak) direction. ".
- Q4863612 label "Barrier transfer machine".
- Q4863612 depiction Linkage_of_moveable_barriers.jpg.