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- Four-quadrant_gate abstract "A four-quadrant gate is a type of boom barrier gate protecting a grade crossing.It has a gate mechanism on both sides of the tracks for both directions of automotive traffic. The exit gates blocking the road leading away from the tracks in this application are equipped with a delay, and begin their descent to their horizontal position several seconds after the entrance gates do, so as to avoid trapping highway vehicles on the crossing.Many people consider four-quadrant gates to be safer than two-quadrant gates because they prevent drivers from illegally driving their vehicles around lowered gates to try to beat a train.In the UK, such crossings are categorised as 'Manually Controlled Barriers' (MCB) because they are always manually controlled, usually from a signal box. Some are known as MCB-CCTV level crossings, because they are supervised by video link to the signal box from which they are remotely controlled.The first four-quadrant gate in the United States was installed in 1952. They have become common for new installations and replacements since. Unlike the UK, many are automated by the rail line's signal system. The first quad gate installation in the country with sensors to detect vehicles stopped in the tracks was installed in Groton, Connecticut in 1998. Eight of the eleven remaining grade crossings on the Northeast Corridor now have such setups.".
- Four-quadrant_gate thumbnail Level_crossing_-_Chertsey_-_England_-_270404.jpg?width=300.
- Four-quadrant_gate wikiPageID "3702702".
- Four-quadrant_gate wikiPageLength "2742".
- Four-quadrant_gate wikiPageOutDegree "11".
- Four-quadrant_gate wikiPageRevisionID "675546112".
- Four-quadrant_gate wikiPageWikiLink Boom_barrier.
- Four-quadrant_gate wikiPageWikiLink Category:Level_crossings.
- Four-quadrant_gate wikiPageWikiLink Category:Road_infrastructure.
- Four-quadrant_gate wikiPageWikiLink Category:Safety.
- Four-quadrant_gate wikiPageWikiLink Category:Street_furniture.
- Four-quadrant_gate wikiPageWikiLink Grade_crossing.
- Four-quadrant_gate wikiPageWikiLink Groton,_Connecticut.
- Four-quadrant_gate wikiPageWikiLink Level_crossing.
- Four-quadrant_gate wikiPageWikiLink Northeast_Corridor.
- Four-quadrant_gate wikiPageWikiLink Rail_track.
- Four-quadrant_gate wikiPageWikiLink Track_(rail_transport).
- Four-quadrant_gate wikiPageWikiLink Train.
- Four-quadrant_gate wikiPageWikiLink File:Level_crossing_-_Chertsey_-_England_-_270404.jpg.
- Four-quadrant_gate wikiPageWikiLinkText "Four-quadrant gate".
- Four-quadrant_gate wikiPageWikiLinkText "four-quadrant gate".
- Four-quadrant_gate wikiPageWikiLinkText "grade crossings".
- Four-quadrant_gate wikiPageWikiLinkText "quad gates".
- Four-quadrant_gate hasPhotoCollection Four-quadrant_gate.
- Four-quadrant_gate wikiPageUsesTemplate Template:Rail-transport-stub.
- Four-quadrant_gate wikiPageUsesTemplate Template:Reflist.
- Four-quadrant_gate wikiPageUsesTemplate Template:Road-stub.
- Four-quadrant_gate subject Category:Level_crossings.
- Four-quadrant_gate subject Category:Road_infrastructure.
- Four-quadrant_gate subject Category:Safety.
- Four-quadrant_gate subject Category:Street_furniture.
- Four-quadrant_gate hypernym Gate.
- Four-quadrant_gate type Article.
- Four-quadrant_gate type Building.
- Four-quadrant_gate type Road.
- Four-quadrant_gate type Article.
- Four-quadrant_gate type Road.
- Four-quadrant_gate comment "A four-quadrant gate is a type of boom barrier gate protecting a grade crossing.It has a gate mechanism on both sides of the tracks for both directions of automotive traffic.".
- Four-quadrant_gate label "Four-quadrant gate".
- Four-quadrant_gate sameAs m.09w7lb.
- Four-quadrant_gate sameAs Q5474933.
- Four-quadrant_gate sameAs Q5474933.
- Four-quadrant_gate wasDerivedFrom Four-quadrant_gate?oldid=675546112.
- Four-quadrant_gate depiction Level_crossing_-_Chertsey_-_England_-_270404.jpg.
- Four-quadrant_gate isPrimaryTopicOf Four-quadrant_gate.