IND/BMT/IRT unified system

E1034611

component of the New York City Subway public transit network subway system

The IND/BMT/IRT unified system is the integrated network of former independent subway lines that together form the modern New York City Subway.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (3)

Label	Occurrences
IND/BMT unified fare system	1
IND/BMT/IRT	1
IND/BMT/IRT unified system canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T13354522 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: IND/BMT/IRT unified system
Context triple: [S (New York City Subway service), system, IND/BMT/IRT unified system]

A. BMT
BMT (Brooklyn–Manhattan Transit Corporation) was a major private New York City subway operator whose lines now form one of the primary divisions of the modern NYC Subway system.
B. BART distance-based fare system
The BART distance-based fare system is a pricing structure for the Bay Area Rapid Transit network in which riders are charged according to the length of their trip rather than a flat fare.
C. IND system
The IND system is a major division of the New York City Subway, originally built as the city-owned Independent Subway System and now encompassing numerous lines and services across the network.
D. CGS-EMU system
The CGS-EMU system is a variant of the centimeter–gram–second (CGS) system of units that uses the electromagnetic (EMU) subsystem for electrical and magnetic quantities, including the gauss as a unit of magnetic flux density.
E. Dual System of Rapid Transit
The Dual System of Rapid Transit was an early 20th-century expansion and unification plan for New York City's subway network, implemented through joint contracts between the city and private transit companies.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: IND/BMT/IRT unified system
Target entity description: The IND/BMT/IRT unified system is the integrated network of former independent subway lines that together form the modern New York City Subway.

A. BMT
BMT (Brooklyn–Manhattan Transit Corporation) was a major private New York City subway operator whose lines now form one of the primary divisions of the modern NYC Subway system.
B. BART distance-based fare system
The BART distance-based fare system is a pricing structure for the Bay Area Rapid Transit network in which riders are charged according to the length of their trip rather than a flat fare.
C. IND system
The IND system is a major division of the New York City Subway, originally built as the city-owned Independent Subway System and now encompassing numerous lines and services across the network.
D. CGS-EMU system
The CGS-EMU system is a variant of the centimeter–gram–second (CGS) system of units that uses the electromagnetic (EMU) subsystem for electrical and magnetic quantities, including the gauss as a unit of magnetic flux density.
E. Dual System of Rapid Transit
The Dual System of Rapid Transit was an early 20th-century expansion and unification plan for New York City's subway network, implemented through joint contracts between the city and private transit companies.
F. None of above. chosen

Statements (49)

Predicate	Object
instanceOf	component of the New York City Subway ⓘ public transit network ⓘ subway system ⓘ
connects	Brooklyn ⓘ Manhattan ⓘ Queens ⓘ The Bronx ⓘ
country	United States ⓘ linked to: United States of America
electrification	third rail ⓘ
fareMedium	MetroCard ⓘ OMNY ⓘ
fareSystem	unified fare system ⓘ
governedBy	Metropolitan Transportation Authority policies ⓘ
hasFeature	24-hour service on most lines ⓘ free transfers between former systems ⓘ integrated signaling system ⓘ interchange stations ⓘ unified route numbering and lettering ⓘ
hasPart	Brooklyn–Manhattan Transit Corporation lines ⓘ linked to: Brooklyn–Manhattan Transit (BMT) lines Independent Subway System lines ⓘ linked to: Independent Subway System (IND) Interborough Rapid Transit Company lines ⓘ linked to: Interborough Rapid Transit legacy lines
hasRouteDesignation	lettered services (former BMT and IND lines) ⓘ numbered services (former IRT lines) ⓘ
hasService	express services ⓘ local services ⓘ
historicalOrigin	Brooklyn–Manhattan Transit Corporation ⓘ Independent Subway System ⓘ linked to: Independent Subway System (IND) Interborough Rapid Transit Company ⓘ
integrationAspect	fare integration ⓘ infrastructure interconnections ⓘ operational integration ⓘ
language	English signage ⓘ
locatedIn	New York City ⓘ New York State ⓘ
operator	Metropolitan Transportation Authority ⓘ New York City Transit Authority ⓘ
owner	City of New York ⓘ linked to: New York City
partOf	New York City Subway ⓘ
purpose	to integrate former independent subway lines into a single network ⓘ
safetySystem	automatic block signaling ⓘ communication-based train control (on some lines) ⓘ
serviceType	rapid transit ⓘ
shortName	IND/BMT/IRT ⓘ linked to: IND/BMT/IRT unified system
ticketing	proof-of-payment not used (gated entry system) ⓘ
trackGauge	standard gauge ⓘ
unificationProcess	city takeover of private subway companies ⓘ
unificationYear	1940 ⓘ
usesRollingStock	electric multiple units ⓘ
zoneSystem	flat fare within system ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

S (New York City Subway service) → system → IND/BMT/IRT unified system ⓘ

QJ train → fareControl → IND/BMT unified fare system ⓘ

linked to: IND/BMT/IRT unified system

IND/BMT/IRT unified system → shortName → IND/BMT/IRT ⓘ