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Level crossing protective system with four barriers
A four-quadrant gate or full-barrier equipment is a type of boom barrier gate protecting a grade crossing. It has a gate mechanism on both sides of the
Four-quadrant_gate
Solid-state semiconductor device
triggering in each of the four possible combinations of gate and MT2 voltages with respect to MT1. The four separate cases (quadrants) are illustrated in Figure
TRIAC
Bar that is used to block a road or passageway
Commons has media related to Boom barriers and Level crossing barriers. Four-quadrant gate Toll collection technology Sinaga, Rijoi; Sihombing, Filbert; Muttaqin
Bar_gate
Railroad corridor in the Northeastern United States
additional protections. In 1998, School Street in Groton was the first four-quadrant gate installation in the country with vehicle detection sensors tied into
Northeast_Corridor
Intersection where a road crosses a railway at the same level
Billups Neon Crossing Signal Boom barrier Breakover angle Crossbuck Four-quadrant gate Grade separation Level crossing signals Lists of rail accidents List
Level_crossing
obstructs movements on the adjacent track.[self-published source?] Four-quadrant gate A type of boom barrier Free-mo A type of modular layout in model railroading
Glossary of rail transport terms
Glossary_of_rail_transport_terms
Type of railway with speeds approaching but less than that of true high-speed rail
around the crossing gates. More active devices include the four-quadrant gate, which blocks both sides of each traffic lane. Longer gate arms can cover 3/4
Higher-speed_rail
City in Ohio, United States
RailAmerica's Indiana and Ohio Railway system. On May 4, 2007, Ohio's first four-quadrant gate was installed at the Second Street railroad crossing in Loveland,
Loveland,_Ohio
Light rail line in Los Angeles County, California
stations. Due to this, Metro started in the early 2000s to install four-quadrant gates at crossings where the A Line shares the right of way with freight
A_Line_(Los_Angeles_Metro)
List of level railroad crossings
crossing gates that block automobiles' approach to the tracks when activated. Increasingly, crossings are being fitted with four-quadrant gates to prevent
Level_crossings_by_country
Quadrant in the United States
National Mall and west of North Capitol Street. It is the largest of the four quadrants of the city (NW, NE, SW and SE), and it includes the central business
Northwest_(Washington,_D.C.)
Commuter rail service in South Florida
to upgrade its grade crossings to include raised medians and/or four quadrant gates to prevent cars from driving around them in an attempt to beat trains
Tri-Rail
Cable-stayed bridge across the Yarra River in Melbourne, Victoria, Australia
The West Gate Bridge is a steel, box girder, cable-stayed bridge across the Yarra River, north of its mouth into Port Phillip, and Westgate Park, located
West_Gate_Bridge
Railroad grade crossing signal
Norway, as the NSB began phasing out manually operated crossing gates, a lower quadrant wigwag made by the Magnetic Signal Company was imported in 1928
Wigwag_(railroad)
Monument in India
four different quadrants and chambers, segregated according to the established settlements. Towards the north of Charminar is the Char Kaman, or four
Charminar
World Heritage site in Morocco
planned city, and the medina took on a degree of symmetry featuring four general quadrants. It was constructed to the limits of the rocky peninsula, and fortified
Medina_of_Essaouira
Stately home in North Yorkshire , England
in 1846. It is built of sandstone, and forms an open courtyard with a quadrant wall to the east. There is one storey and an attic, and seven bays The
Duncombe_Park
Public park in Norwich, England
23 October 2025. "North west quadrant pavilion at Eaton Park". Historic England. Retrieved 23 October 2025. "Main gates to Eaton Park". Historic England
Eaton_Park
Type of adjustable-speed drive
be categorized as single-quadrant, two-quadrant, or four-quadrant; the chart's four quadrants are defined as follows: Quadrant I – Driving or motoring
Variable-frequency_drive
Ancient Mesopotamian board game
sections; a quadrant of 3 × 4 squares, like that in the Ur game, and a row or 'arm' of 8 squares projecting from the central row of the quadrant. It has five
Royal_Game_of_Ur
February 2025 Historic England, "Gate piers approximately 40 metres to northeast of Maunby Hall and attached quadrant walls, Kirby Wiske (1315108)", National
Listed buildings in Kirby Wiske
Listed_buildings_in_Kirby_Wiske
Civil parish and estate in North Yorkshire, England
pedestals. The pedestrian gates are in cast iron, and the piers are about 3 metres (9.8 ft) high and less ornate. The quadrant walls have a moulded plinth
Kirby_Hall,_Harrogate
2003 video game
announced they would be splitting the EVE Online year into four quadrants. Each quadrant would have an overarching theme associated with it that allowed
Expansions_of_Eve_Online
City and county in California, US
to Golden Gate Park lies the vast Sunset District, a large middle-class area with a predominantly Asian population. The northwestern quadrant of the city
San_Francisco
Road in the Royal Borough of Kensington & Chelsea
Kensington and Chelsea, in west central London. The street runs from Notting Hill Gate in the east to the Holland Park Roundabout in the west, forms a part of the
Holland_Park_Avenue
Deity in Buddhism
Cāturmahārājika deva or "Four Great Heavenly Kings", each of whom rules over a specific direction. Vessavaṇa's realm is the northern quadrant of the world, including
Vaiśravaṇa
List for England, retrieved 28 December 2025 Historic England, "Gate piers and quadrant walls formerly to rear entrance to Stanwick Hall, Stanwick St John
Listed buildings in Stanwick St John
Listed_buildings_in_Stanwick_St_John
2021 film by Doug Liman
Chaos Walking trilogy, to be produced by Doug Davison's production company Quadrant Pictures. In 2012, Lionsgate hired Charlie Kaufman to write the first draft
Chaos_Walking_(film)
Method used in early text mode video hardware to emulate raster graphics
Instead, if the 8 × 8 character is divided into 2 × 2 "pixels" called quadrants, only 16 characters are needed for every combination. This was, for example
Semigraphics
Name suffix
exceptional circumstances) End Court Cross Side View Walk Park Meadow Green Quadrant Gate Gait However other suffixes may be used elsewhere in the UK (for example
Street_suffix
2021 crowd disaster in Houston, Texas, US
lack of adequate water stations, lack of exits, 100-foot-wide (30 m) quadrants conducive to severe and unmanageable crowd surges, and access aisles too
Astroworld Festival crowd crush
Astroworld_Festival_crowd_crush
Bridge
William Howard Taft Bridge) is a historic bridge located in the Northwest quadrant of Washington, D.C. Built in 1906, it carries Connecticut Avenue over the
Taft_Bridge
Archived from the original on 2 April 2015. Retrieved 27 February 2015. "The Quadrant Boston". Archived from the original on 20 September 2020. Retrieved 19
List of football stadiums in England
List_of_football_stadiums_in_England
American science fiction television series
USS Enterprise (NCC-1701-D), in its exploration of the Alpha quadrant and Beta quadrant in the Milky Way galaxy. In the 1980s, Roddenberry—who was responsible
Star Trek: The Next Generation
Star_Trek:_The_Next_Generation
Meadows Shopping Centre, Chelmsford Pavilions Shopping Centre, Waltham Cross Quadrant Shopping Centre, Dunstable Queensgate Shopping Centre, Harlow Queensgate
List of shopping centres in the United Kingdom
List_of_shopping_centres_in_the_United_Kingdom
Castle in Slovakia
constellation. Adjacent to the Nicholas Gate, a Gothic gateway from the 15th century in the northeast quadrant, is the Lugiland Bastion. This is a long
Bratislava_Castle
Type of circular fort built in Scandinavia in the Viking Age
shape, with roads and gates pointing in the four cardinal directions. Inside the fort, each quadrant has one, in a single case four, square blocks of longhouses
Viking_ring_fortress
Small economy car produced by Renault (1961–1994)
wagon, its minimal rear body length, and its top-hinged, single-piece tail-gate means that it is now recognised as the world's first mass-produced hatchback
Renault_4
Transistor amplifier
A increases (decreases) exponentially, exactly as it does in a single-quadrant log-antilog circuit: I 2 = I 1 e V Y ϕ t = V X R e V Y ϕ t , {\displaystyle
Blackmer_gain_cell
book, he becomes King of the Beasts in the dark forest in Oz's southern quadrant called Quadling Country, though this is rarely brought up in later Oz books
List of Oz characters (created by Baum)
List_of_Oz_characters_(created_by_Baum)
French astronomer and priest (1620–1682)
(developed by William Gascoigne) to a quadrant, and one of the first to use a micrometer screw on his instruments. The quadrant he used to determine the size
Jean_Picard
Server computers by Digital Equipment Corporation
expelling it through vents in the middle. Under the blower are four plug-in unit (PIU) quadrants for PIUs, enclosures which house options. The expander cabinet
DEC 7000 AXP and DEC 10000 AXP
DEC_7000_AXP_and_DEC_10000_AXP
Electrical circuit detecting phase difference
multipliers are the double balanced diode mixer, diode ring and the four-quadrant multiplier, Gilbert cell. Instead of using two multipliers, a more common
Phase_detector
Roman fort in Alsace, France
which, together with its cemetery has been identified west of the south gate of the fort. Biesheim is about halfway between Basel and Straßburg, north
Argentovaria
Symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9
horary quadrant from 1396, in England, a 1445 inscription on the tower of Heathfield Church, Sussex; a 1448 inscription on a wooden lych-gate of Bray
Arabic_numerals
Castle in Dumfries and Galloway, Scotland
"Drumlanrig Castle, Outbuildings and Pavilion Blocks Piers, Balustrades and Quadrant Walls and Garden Urns (Category A Listed Building LB3886)". Retrieved 20
Drumlanrig_Castle
First massively parallel computer
(FPUs) and four central processing units (CPUs) able to process 1 billion operations per second. Due to budget constraints, only a single "quadrant" with 64
ILLIAC_IV
Semicircular niche or recess, often lined with seats
had four modern examples of the exedra. The elevated Great Court, which served as the campus quad, had one exedra in each quadrant: two with four sections
Exedra
Buddhist temple in Kyoto, Japan
from the south gate in the southwest quadrant of the complex. There is a main north–south path connecting the north gate and the south gate, which starts
Myōshin-ji
2024 film by George Miller
reasons for the "awful" underperformance was because the film is not a four-quadrant tentpole, writing: "Furiosa wasn't ever expected to be a Fast & Furious
Furiosa:_A_Mad_Max_Saga
Marble mausoleum in Agra, India
divided by two main walkways (khiyaban) into four quadrants with further raised pathways that divide each of the four-quarters into 16 sunken parterres or flowerbeds
Taj_Mahal
Country house in North Yorkshire, England
to each lodge is a quadrant screen wall ending in a rusticated pier with a ball finial. Between the lodges are four rusticated gate piers with plinths
Thimbleby_Hall
uranography, the modern constellation Monoceros is located within the southern quadrant of the sky, which is symbolized as the Vermillion Bird of the South (南方朱雀
Monoceros in Chinese astronomy
Monoceros_in_Chinese_astronomy
Roman term for a fortified military base
divided into equal quadrants for easy organization and movement. Four gates were positioned at the cardinal points: Porta Praetoria (front gate, facing the enemy)
Castra
Capital and largest city of Madagascar
until 1710 when Imerina split into four warring quadrants. Antananarivo became the capital of the southern quadrant until 1794, when King Andrianampoinimerina
Antananarivo
Assassin of James A. Garfield (1841–1882)
execution, Guiteau was housed at St. Elizabeths Hospital in the southeastern quadrant of Washington, D.C. While in prison and awaiting execution, Guiteau wrote
Charles_J._Guiteau
Defunct American film studio
mini-major film studios until it merged with later mini-major film studio Lions Gate Entertainment on December 15, 2003. At the time of its acquisition, Artisan
Artisan_Entertainment
Molar and premolar teeth in mammals
Mammals have multicuspidate molars (three in placentals, four in marsupials, in each jaw quadrant) and premolars situated between canines and molars whose
Cheek_teeth
American medical disaster thriller film by Steven Soderbergh
was filmed. Filming moved once again in January 2011 to the Druid Hills quadrant of Atlanta, which contains the headquarters of the Centers for Disease
Contagion_(2011_film)
Historically, Fort Wayne's neighborhoods have been divided among four unofficial quadrants: northeast, northwest, southeast, and southwest. Calhoun Street
List of neighborhoods in Fort Wayne, Indiana
List_of_neighborhoods_in_Fort_Wayne,_Indiana
Early textile production via automated means
his death in 1792, he was the wealthiest untitled person in Britain. The gate to Cromford Mill was shut at precisely 6am and 6pm every day and any worker
Textile manufacture during the British Industrial Revolution
Textile_manufacture_during_the_British_Industrial_Revolution
British mixing console
needed to accommodate Abbey Road Studios' new four-track tape machines. Both models featured 14 Painton quadrant faders to control the level of eight microphone
EMI_REDD
1993 pinball machine
the three ramps - Alpha quadrant (right ramp), Beta quadrant (center ramp), and Delta quadrant (upper left ramp). The other four are the left and right
Star Trek: The Next Generation (pinball)
Star_Trek:_The_Next_Generation_(pinball)
Board game
(LR20) batteries) 1 circular cardboard game board, divided into four "kingdom" quadrants 16 plastic buildings for the game board (bazaar, ruin, sanctuary
Dark_Tower_(game)
Indian railway safety technology
firms that have been vying for the approval to be vendors are– GGTronics, Quadrant Future Tek, Areca Embedded Systems, Lotus Wireless Technologies and the
Kavach (train protection system)
Kavach_(train_protection_system)
State highway in Florida, United States
The highway intersects SR 20 (N.W. 6th Street) and enters the northeast quadrant of Gainesville at an abandoned rail line. East of the address axis, SR
Florida_State_Road_120
Point on the Tel Aviv-Jerusalem highway
the Hebrew and Arabic name mean the same - "Gate of the Valley". Bab el Wad 1943 1:20,000 (lower left quadrant) Bad el Wad 1945 1:250,000 Position of forces
Sha'ar_HaGai
avenues exist in one or two quadrants, except for Massachusetts and Virginia Avenues, which travel through three of the four quadrants; it is geometrically impossible
List of state-named roadways in Washington, D.C.
List_of_state-named_roadways_in_Washington,_D.C.
Area of south east London, England
Margaret's Church just beyond. Lee Green Farm occupied the south-east quadrant from the 1660s (roughly on the site of the present Leegate shopping centre)
Lee,_London
Dysfunction in one's ability to comprehend and respond to multiple sensory stimuli
active) and sensory threshold to the stimuli (low or high) creating four subtypes or quadrants: High neurological thresholds Low registration: high threshold
Sensory_processing_disorder
Numbers in the Roman numeral system
when a graph includes negative numbers, its quadrants are named using I, II, III, and IV. These quadrant names signify positive numbers on both axes,
Roman_numerals
Historic England, "Lodge to Woolley Hall including walling, piers, gate piers and gates, Woolley (1200715)", National Heritage List for England, retrieved
Listed buildings in Woolley, West Yorkshire
Listed_buildings_in_Woolley,_West_Yorkshire
Ancient Roman goddess of marriage and childbirth
The sections of the NE quadrant are inhabited by the heavenly gods, thence are the most favourable. Those of the NW quadrant by the underworld and fate
Juno_(mythology)
in each corner and one in the middle), two in the middle points of each quadrant of the curved base (rotated 45 degrees), and two more on each side of the
Flag_of_Portugal
Dallas, Texas, U.S. historic place
facing the Dal-Tex Building. The seven-story annex occupies the northwest quadrant of the block holding the original building, and it overlooks Dealey Plaza
Dealey_Plaza
Highway in Louisiana
Air Force Base being in the way of the proposed route of the southeast quadrant, the two highways were both split into their respective designations and
Interstate_220_(Louisiana)
one guidebook identifies five major districts, corresponding to the four quadrants plus a south central district. These five broad districts, counterclockwise
List of neighborhoods in San Francisco
List_of_neighborhoods_in_San_Francisco
Fantasy land created by L. Frank Baum
by L. Frank Baum and illustrated by W. W. Denslow. Oz consists of four vast quadrants: the Gillikin Country in the north, Quadling Country in the south
Land_of_Oz
also known as Halfworld, was an artificial planet located in the Keystone Quadrant. It was designed by the High Evolutionary as a replication of Earth and
Features of the Marvel Cinematic Universe
Features_of_the_Marvel_Cinematic_Universe
Heritage List for England, retrieved 17 January 2024 Historic England, "Gate Piers and Screen Walls, Appleton-le-Street with Easthorpe (1172816)", National
Listed buildings in Appleton-le-Street with Easthorpe
Listed_buildings_in_Appleton-le-Street_with_Easthorpe
Instrument for measuring, keeping or indicating time
Usually, they are driven by AC-synchronous motors. Clocks with analog quadrants, with a digital component, usually minutes and hours displayed analogously
Clock
Lane in which traffic may travel in either direction
traffic from a reversible ramp. The two center lanes of the six-lane Golden Gate Bridge are reversible; they are southbound during morning rush hour and northbound
Reversible_lane
Type of analog-to-digital converter
van de Plassche, ADCs, Kluwer Academic Publishers, 1994. "A Precise Four-Quadrant Multiplier with Subnanosecond Response", Barrie Gilbert, IEEE Journal
Flash_ADC
List for England, retrieved 5 May 2022 Historic England, "No. 2 St Mary's Gate, Chesterfield (1025866)", National Heritage List for England, retrieved 10
Listed buildings in Chesterfield, Derbyshire
Listed_buildings_in_Chesterfield,_Derbyshire
1955 part of novel by J. R. R. Tolkien
ISBN 978-0-35-865298-4. Colebatch, Hal G. P. (October 1989). "Tolkien and his critics". Quadrant. 33 (10): 62–67. ISSN 0033-5002. Colebatch, Hal G. P. (2007). "Communism"
The_Return_of_the_King
Closed Caltrain rail station
platform, install a fence along the right-of-way, and install new four-quadrant crossing gates at Watkins Avenue. SMA Rail Consulting (April 2016). "California
Atherton_station
First version of British Motor Corporation's Mini
August – 4232/4093 – Split radiator cowl August – 5488/5537 – Pivoting quadrant on radius arm for handbrake cable August – 10151/11670 – Castor angle changed
Mini_(Mark_I)
1987 American film
Dorsky used the unslit 8 mm footage to create a split screen with four quadrants. Normally screened on 16 mm film at 16 frames per second, it is one
17_Reasons_Why
Australian businesswoman (born 1954)
overtake Carlos Slim, the Mexican magnate worth US$74 billion and Bill Gates, who is worth US$56 billion, mainly because she owns her companies outright
Gina_Rinehart
Australian poet and critic (1938–2019)
and After, Four early English-language poets of Australia Carcanet 2005: Best Australian Poems 2004, Melbourne, Black Inc. 2012: The Quadrant Book of Poetry
Les_Murray_(poet)
2014 film by Gareth Edwards
among sub-groups of core filmgoers. It extended the standard Hollywood four-quadrant analysis of male/female and under/over 25 years of age to smaller target
Godzilla_(2014_film)
Late 1940s American car
Tuckermatic installed had a standard column shift lever, with a three position quadrant on the steering column. Up was reverse, the middle was neutral, and down
Tucker_48
Washington, D.C. Civil War memorial site
Totten was one of seven temporary earthwork forts built in the Northeast quadrant of the city by the Union Army to protect the city from the Confederate
Fort_Totten_Park
Last American Hero — August 3, 1973 The Neptune Factor co-production with Quadrant Films and Bellevue Pathe August 9, 1973 Gordon's War co-production with
List of 20th Century Fox films (1935–1999)
List_of_20th_Century_Fox_films_(1935–1999)
American full-size automobile
continuously variable gear-ratio which made "shifting" imperceptible. The shift quadrant on Turboglide cars followed a "P R N D Gr" pattern. From 1955 to 1957,
Chevrolet_Bel_Air
List of U.S.-backed regime change operations
several links to CIA-funded organisations such as LawAsia and the magazine Quadrant, and was referred to as "Our Man" by the CIA according to whistle-blower
United States involvement in regime change
United_States_involvement_in_regime_change
Heavy vehicle used to transfer concrete lane dividers during rush hours
barrier system was introduced in Sydney, NSW, Australia, in 2012. The Golden Gate Bridge had a permanent 13,340-foot (4,070 m) movable barrier system installed
Barrier_transfer_machine
Business district in Hyderabad, India
, Four Soft operate and call centers operate from this four-quadrant, 10-story building. The Cyber Towers building is divided into four quadrants with
HITEC_City
Buddhist cave monuments in Maharashtra, India
another Persian-style foreign group, one of the four such groups (one now missing) at the center of each quadrant of the ceiling A servant from Central Asia
Ajanta_Caves
Wiki". tfwiki.net. "Stylish man - Transformers Wiki". tfwiki.net. "Paul Gates - Transformers Wiki". tfwiki.net. "Carl Andrews - Transformers Wiki". tfwiki
List of The Transformers characters
List_of_The_Transformers_characters
FOUR QUADRANT-GATE
FOUR QUADRANT-GATE
Girl/Female
Indian, Punjabi, Sikh
Tears of Eyes
Biblical
four
Boy/Male
Biblical
Four.
Boy/Male
Hindu, Indian
Four Faced; A Name for Varuna
Male
Icelandic
Icelandic form of Old Norse Friðþjófr, FRIÃÞJÓFUR means "peace-thief."
Boy/Male
Muslim
Faculty. Power. Nature.
Boy/Male
African, Arabic, Australian, Lebanese
Light
Boy/Male
Muslim/Islamic
Light
Boy/Male
Indian
Power, Might, Strength
Boy/Male
Muslim
Power, Might, Strength
Boy/Male
Hindu, Indian, Traditional
Four Faced; Another Name for Brahma
Boy/Male
Bengali, French, Hebrew, Indian
Fair; Red; White
Boy/Male
Hindu
Four-armed
Boy/Male
Arabic, Indian, Muslim, Punjabi, Sikh
Love; Nature; Faculty; Power; Strength; Potency
Boy/Male
Native American
Four bears.
Girl/Female
Afghan, Arabic, Muslim, Pakistani
One who Know the Recital of Quaran
Boy/Male
Indian, Sanskrit
Four Legged; Another Name for Tortoise
Boy/Male
African
Rock.
Boy/Male
Hindu, Indian, Punjabi, Sikh
Princess
Boy/Male
Scottish
From the water.
FOUR QUADRANT-GATE
FOUR QUADRANT-GATE
Male
Hebrew
Variant spelling of Hebrew Gidown, GIDON means "cutter down; hewer," i.e. "mighty warrior."
Boy/Male
Czech
War.
Boy/Male
English
The Old EnglishGerman Bernard, meaning bear-hard.
Boy/Male
Teutonic American Shakespearean Scandinavian English
Strong.
Boy/Male
Russian
noble.
Boy/Male
Indian, Punjabi, Sikh
The Lamp of Life
Girl/Female
French, German, Latin
Song
Surname or Lastname
English
English : variant of Fowle.
Female
Irish
Irish name ÉRIU means "peace." In mythology, this is the name of a goddess of peace and patroness of Ireland.
Girl/Female
Biblical
Wheel, revolution.
FOUR QUADRANT-GATE
FOUR QUADRANT-GATE
FOUR QUADRANT-GATE
FOUR QUADRANT-GATE
FOUR QUADRANT-GATE
n.
The sum of four units; four units or objects.
v. t.
To macerate, and render fit for plaster or mortar; as, to sour lime for business purposes.
n.
A symbol representing four units, as 4 or iv.
n.
Strips of dressed skins with fur, used on garments for warmth or for ornament.
n.
An instrument for taking altitudes, as a quadrant, sextant, etc.
n.
Four things of the same kind, esp. four horses; as, a chariot and four.
pl.
of Quadra
n.
One of the four parts into which a plane is divided by the coordinate axes. The upper right-hand part is the first quadrant; the upper left-hand part the second; the lower left-hand part the third; and the lower right-hand part the fourth quadrant.
n.
Fixed or appointed time; conjuncture; a particular time or occasion; as, the hour of greatest peril; the man for the hour.
n.
A modification of the quadrant, for measuring small angles.
a.
Having four wheels.
a.
Having four equal sides, the opposite sides parallel, and four right angles; square.
n.
A quadrat.
a.
The quadrate bone.
pl.
of Quadrans
a.
A plane surface with four equal sides and four right angles; a square; hence, figuratively, anything having the outline of a square.
n.
An instrument for measuring altitudes, variously constructed and mounted for different specific uses in astronomy, surveying, gunnery, etc., consisting commonly of a graduated arc of 90¡, with an index or vernier, and either plain or telescopic sights, and usually having a plumb line or spirit level for fixing the vertical or horizontal direction.
a.
Of or pertaining to a quadrant; also, included in the fourth part of a circle; as, quadrantal space.
n.
The quadrant of an azimuth circle.