MBTA Commuter Rail Zone 1A

E170289

MBTA fare product fare zone

MBTA Commuter Rail Zone 1A is the innermost fare zone of the Boston-area commuter rail system, covering central city stations with the lowest commuter rail fares.

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All labels observed (3)

Label	Occurrences
MBTA Commuter Rail Zone 1A canonical	3
MBTA fare zone 1A	2
MBTA rapid transit zone	1

How this entity was disambiguated

This entity first appeared as the object of triple T1057808 — 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 Commuter Rail Zone 1A
Context triple: [Porter (MBTA station), hasZone, MBTA Commuter Rail Zone 1A]

A. MBTA Commuter Rail Greenbush Line
The MBTA Commuter Rail Greenbush Line is a Massachusetts Bay Transportation Authority commuter rail route connecting Boston’s South Station with coastal South Shore communities, including towns such as Hingham, Cohasset, and Scituate.
B. MBTA Ashmont Branch
The MBTA Ashmont Branch is a rapid transit line of Boston’s Red Line that runs from JFK/UMass station through Dorchester to Ashmont, serving several southern neighborhoods of the city.
C. MBTA Commuter Rail Kingston Line
The MBTA Commuter Rail Kingston Line is a Massachusetts Bay Transportation Authority rail line providing commuter service between Boston and the South Shore, terminating in Kingston, Massachusetts.
D. MBTA Braintree Branch
The MBTA Braintree Branch is a southern extension of Boston’s Red Line rapid transit system that runs from JFK/UMass through several South Shore communities to Braintree.
E. MBTA Silver Line
The MBTA Silver Line is a bus rapid transit service in Boston that operates in dedicated lanes and tunnels, linking key neighborhoods, Logan Airport, and South Station.
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 Commuter Rail Zone 1A
Target entity description: MBTA Commuter Rail Zone 1A is the innermost fare zone of the Boston-area commuter rail system, covering central city stations with the lowest commuter rail fares.

A. MBTA Commuter Rail Greenbush Line
The MBTA Commuter Rail Greenbush Line is a Massachusetts Bay Transportation Authority commuter rail route connecting Boston’s South Station with coastal South Shore communities, including towns such as Hingham, Cohasset, and Scituate.
B. MBTA Ashmont Branch
The MBTA Ashmont Branch is a rapid transit line of Boston’s Red Line that runs from JFK/UMass station through Dorchester to Ashmont, serving several southern neighborhoods of the city.
C. MBTA Commuter Rail Kingston Line
The MBTA Commuter Rail Kingston Line is a Massachusetts Bay Transportation Authority rail line providing commuter service between Boston and the South Shore, terminating in Kingston, Massachusetts.
D. MBTA Braintree Branch
The MBTA Braintree Branch is a southern extension of Boston’s Red Line rapid transit system that runs from JFK/UMass through several South Shore communities to Braintree.
E. MBTA Silver Line
The MBTA Silver Line is a bus rapid transit service in Boston that operates in dedicated lanes and tunnels, linking key neighborhoods, Logan Airport, and South Station.
F. None of above. chosen

Statements (45)

Predicate	Object
instanceOf	MBTA fare product ⓘ fare zone ⓘ
appliesTo	inbound trips to central Boston within Zone 1A ⓘ outbound trips originating in Zone 1A to Zone 1A stations ⓘ short-distance commuter rail trips within central Boston ⓘ
country	United States of America ⓘ surface form: United States
covers	central Boston commuter rail stations ⓘ
currency	US dollar ⓘ surface form: USD
fareCalculationBasis	origin–destination zone system ⓘ
fareCategory	7-day pass ⓘ monthly pass ⓘ reduced fare ⓘ regular adult fare ⓘ weekend pass ⓘ
fareCollectionMethod	gated entry at some stations ⓘ proof-of-payment on trains ⓘ
fareIntegration	aligned with MBTA subway fare level ⓘ
fareLevel	lowest MBTA commuter rail fare zone ⓘ
fareMediaAccepted	CharlieCard ⓘ CharlieTicket ⓘ mTicket mobile app ⓘ
farePolicy	flat fare within Zone 1A ⓘ
farePolicyType	distance-based zonal pricing ⓘ
fareStructureRole	innermost commuter rail fare zone ⓘ
fareZoneOrder	inner zone before Zone 1 ⓘ
fareZoneSystem	MBTA Commuter Rail zone-based fares ⓘ
governingBody	MBTA Fiscal and Management Control Board ⓘ
hasAdvantage	cheaper than Zone 1 and outer zones ⓘ
hasDiscounts	reduced fare for eligible riders ⓘ
introducedBy	MBTA ⓘ surface form: Massachusetts Bay Transportation Authority
isDefinedBy	MBTA fare tariff documents ⓘ
isPartOf	MBTA Commuter Rail network ⓘ surface form: MBTA regional transit network
locatedIn	Greater Boston ⓘ surface form: Boston metropolitan area
mode	rail ⓘ
operator	MBTA ⓘ surface form: Massachusetts Bay Transportation Authority
partOf	MBTA Commuter Rail network ⓘ surface form: MBTA Commuter Rail
primaryPurpose	provide low-cost commuter rail access to central Boston ⓘ
regionServed	Greater Boston ⓘ
serviceAreaCharacteristic	dense urban core ⓘ
serviceType	commuter rail ⓘ
targetUsers	commuters to downtown Boston ⓘ occasional riders within central Boston ⓘ
usedFor	commuter rail passes ⓘ commuter rail single-ride fares ⓘ
zoneNumber	1A ⓘ

How these facts were elicited

Referenced by (6)

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

Porter (MBTA station) → hasZone → MBTA Commuter Rail Zone 1A ⓘ

Forest Hills station → zone → MBTA Commuter Rail Zone 1A ⓘ

Beaconsfield station → fareZone → MBTA Commuter Rail Zone 1A ⓘ

this entity surface form: MBTA rapid transit zone

JFK/UMass station → hasZone → MBTA Commuter Rail Zone 1A ⓘ

Eliot station → hasZone → MBTA Commuter Rail Zone 1A ⓘ

this entity surface form: MBTA fare zone 1A

Chestnut Hill station → zone → MBTA Commuter Rail Zone 1A ⓘ