MBTA Type 9 Light Rail Vehicle

E35647

light rail vehicle rolling stock streetcar

The MBTA Type 9 Light Rail Vehicle is a modern, low-floor streetcar used on Boston’s Green Line that features improved accessibility, passenger comfort, and energy efficiency compared to earlier MBTA light rail fleets.

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All labels observed (6)

Label	Occurrences
MBTA Type 9 LRV	6
Type 9 Light Rail Vehicle	4
MBTA Type 9 LRVs	2
MBTA Type 9 Light Rail Vehicle canonical	2
MBTA Type 9 light rail vehicle	2
MBTA rolling stock	1

How this entity was disambiguated

This entity first appeared as the object of triple T269518 — 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: MBTA Type 9 Light Rail Vehicle
Context triple: [MBTA Green Line D branch, usesRollingStock, MBTA Type 9 Light Rail Vehicle]

A. MBTA Type 8 Light Rail Vehicle
The MBTA Type 8 Light Rail Vehicle is a low-floor, articulated streetcar used on Boston’s Green Line, designed to improve accessibility and passenger capacity on the system’s light rail routes.
B. MBTA Type 7 Light Rail Vehicle
The MBTA Type 7 Light Rail Vehicle is a high-floor, articulated streetcar used on Boston’s Green Line, known for its distinctive design and role as one of the system’s primary light rail fleets.
C. Mark VI monorail trains
Mark VI monorail trains are a fleet of streamlined, automated monorail vehicles introduced in the late 1980s that serve as the primary passenger trains for the Walt Disney World Resort’s elevated transit system.
D. M9 electric multiple unit
The M9 electric multiple unit is a modern commuter rail train used by the Long Island Rail Road, designed to replace older fleets with improved performance, safety, and passenger amenities.
E. Portland Streetcar
Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
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: MBTA Type 9 Light Rail Vehicle
Target entity description: The MBTA Type 9 Light Rail Vehicle is a modern, low-floor streetcar used on Boston’s Green Line that features improved accessibility, passenger comfort, and energy efficiency compared to earlier MBTA light rail fleets.

A. MBTA Type 8 Light Rail Vehicle
The MBTA Type 8 Light Rail Vehicle is a low-floor, articulated streetcar used on Boston’s Green Line, designed to improve accessibility and passenger capacity on the system’s light rail routes.
B. MBTA Type 7 Light Rail Vehicle
The MBTA Type 7 Light Rail Vehicle is a high-floor, articulated streetcar used on Boston’s Green Line, known for its distinctive design and role as one of the system’s primary light rail fleets.
C. Mark VI monorail trains
Mark VI monorail trains are a fleet of streamlined, automated monorail vehicles introduced in the late 1980s that serve as the primary passenger trains for the Walt Disney World Resort’s elevated transit system.
D. M9 electric multiple unit
The M9 electric multiple unit is a modern commuter rail train used by the Long Island Rail Road, designed to replace older fleets with improved performance, safety, and passenger amenities.
E. Portland Streetcar
Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	light rail vehicle ⓘ rolling stock ⓘ streetcar ⓘ
accessibilityFeature	level boarding at low-platform stops ⓘ priority seating areas ⓘ wheelchair accessibility ⓘ wide doors ⓘ
category	Green Line rolling stock ⓘ MBTA rolling stock ⓘ linked to: MBTA Type 9 Light Rail Vehicle
cityServed	Boston ⓘ linked to: Boston, Massachusetts Brookline ⓘ Cambridge ⓘ linked to: City of Cambridge Somerville ⓘ linked to: Somerville, Massachusetts
country	United States ⓘ linked to: United States of America
designGoal	improved accessibility ⓘ improved energy efficiency ⓘ improved passenger comfort ⓘ
doorConfiguration	multiple side doors ⓘ
feature	air conditioning ⓘ energy-efficient traction systems ⓘ improved interior lighting ⓘ low-floor center section ⓘ modern passenger information systems ⓘ regenerative braking ⓘ
floorType	low-floor ⓘ
gauge	standard gauge ⓘ
introducedOnLine	Green Line B Branch ⓘ linked to: Green Line B branch Green Line C Branch ⓘ Green Line D Branch ⓘ linked to: MBTA Green Line D branch Green Line E Branch ⓘ linked to: Green Line E branch
network	MBTA light rail system ⓘ linked to: MBTA Green Line
operator	MBTA ⓘ Massachusetts Bay Transportation Authority ⓘ linked to: MBTA
owner	Massachusetts Bay Transportation Authority ⓘ linked to: MBTA
powerSupply	overhead catenary ⓘ
predecessor	MBTA Type 7 Light Rail Vehicle ⓘ MBTA Type 8 Light Rail Vehicle ⓘ
purpose	capacity increase on MBTA Green Line ⓘ replacement of older Green Line vehicles ⓘ
region	Greater Boston ⓘ
safetyFeature	improved braking systems ⓘ modern crashworthiness standards ⓘ onboard surveillance systems ⓘ
serviceType	streetcar service ⓘ urban light rail ⓘ
usedOnLine	Green Line ⓘ MBTA Green Line ⓘ

How these facts were elicited

Referenced by (17)

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

MBTA Green Line D branch → usesRollingStock → MBTA Type 9 Light Rail Vehicle ⓘ

subject linked to: MBTA Green Line D branch (nearby stations)

MBTA Green Line D branch → usesRollingStock → MBTA Type 9 LRV ⓘ