COASTER commuter rail

E188296

commuter rail service passenger rail service public transportation system

COASTER commuter rail is a regional passenger train service in San Diego County, California, connecting coastal communities between Oceanside and downtown San Diego.

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All labels observed (6)

Label	Occurrences
Coaster commuter rail	9
COASTER commuter rail canonical	8
Coaster commuter rail line	2
COASTER commuter rail line	1
Coaster (commuter rail)	1
Coaster commuter rail system	1

How this entity was disambiguated

This entity first appeared as the object of triple T1669407 — 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: COASTER commuter rail
Context triple: [Oceanside, railServedBy, COASTER commuter rail]

A. Sounder commuter rail
Sounder commuter rail is a regional passenger train service in the Seattle area that connects downtown Seattle with surrounding communities in Pierce and Snohomish counties.
B. Metrolink commuter rail
Metrolink commuter rail is a Southern California regional passenger rail system that connects the Inland Empire with Los Angeles and other surrounding counties.
C. Amtrak Keystone Service
Amtrak Keystone Service is a passenger rail service operated by Amtrak that runs primarily between New York City and Harrisburg, Pennsylvania, providing frequent regional connections along the Keystone Corridor.
D. O-Train
The O-Train is Ottawa’s urban rail transit system, providing light rail service across key corridors of Canada’s capital city.
E. WES Commuter Rail
WES Commuter Rail is a suburban commuter rail service in the Portland, Oregon metropolitan area connecting Beaverton and Wilsonville.
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: COASTER commuter rail
Target entity description: COASTER commuter rail is a regional passenger train service in San Diego County, California, connecting coastal communities between Oceanside and downtown San Diego.

A. Sounder commuter rail
Sounder commuter rail is a regional passenger train service in the Seattle area that connects downtown Seattle with surrounding communities in Pierce and Snohomish counties.
B. Metrolink commuter rail
Metrolink commuter rail is a Southern California regional passenger rail system that connects the Inland Empire with Los Angeles and other surrounding counties.
C. Amtrak Keystone Service
Amtrak Keystone Service is a passenger rail service operated by Amtrak that runs primarily between New York City and Harrisburg, Pennsylvania, providing frequent regional connections along the Keystone Corridor.
D. O-Train
The O-Train is Ottawa’s urban rail transit system, providing light rail service across key corridors of Canada’s capital city.
E. WES Commuter Rail
WES Commuter Rail is a suburban commuter rail service in the Portland, Oregon metropolitan area connecting Beaverton and Wilsonville.
F. None of above. chosen

Statements (46)

Predicate	Object
instanceOf	commuter rail service ⓘ passenger rail service ⓘ public transportation system ⓘ
category	Commuter rail in California ⓘ Rail transport in San Diego County ⓘ
connects	Carlsbad ⓘ Del Mar area ⓘ Encinitas ⓘ Oceanside ⓘ San Diego ⓘ Solana Beach ⓘ
country	United States ⓘ linked to: United States of America
county	San Diego County ⓘ
electrification	not electrified ⓘ
endPoint	San Diego Santa Fe Depot ⓘ linked to: Santa Fe Depot (San Diego)
fareSystem	regional transit fare system in San Diego County ⓘ
geographicFeatureFollowed	Pacific Ocean coastline ⓘ
modeOfTransport	rail ⓘ
operatesIn	California ⓘ linked to: California, United States San Diego County ⓘ United States ⓘ linked to: United States of America
operator	North County Transit District ⓘ
owner	North County Transit District ⓘ
primaryFunction	commuter transportation ⓘ regional passenger mobility ⓘ
propulsion	diesel ⓘ
regionServed	Greater San Diego area ⓘ linked to: San Diego metropolitan area North County San Diego ⓘ linked to: North County, San Diego
rollingStockType	diesel locomotive-hauled coaches ⓘ
routeType	coastal rail line ⓘ
serviceArea	coastal communities of San Diego County ⓘ
serviceClass	standard class ⓘ
serviceFrequency	peak-oriented commuter service ⓘ
servicePattern	limited weekend service ⓘ weekday-focused service ⓘ
sharesTracksWith	Amtrak Pacific Surfliner ⓘ linked to: Amtrak California BNSF Railway freight trains ⓘ
startPoint	Oceanside Transit Center ⓘ
state	California ⓘ linked to: California, United States
terminus	Oceanside Transit Center ⓘ Santa Fe Depot ⓘ linked to: San Bernardino–Santa Fe Depot
terminusCity	Oceanside ⓘ San Diego ⓘ
ticketing	proof-of-payment system ⓘ
trackGauge	standard gauge ⓘ
usesRailCorridor	Los Angeles–San Diego–San Luis Obispo Rail Corridor ⓘ linked to: San Diego Subdivision

How these facts were elicited