San Joaquin Regional Rail Commission

E59414

public agency rail transportation authority

The San Joaquin Regional Rail Commission is a public agency in California responsible for planning, managing, and overseeing regional passenger rail services in the San Joaquin Valley and surrounding areas.

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All labels observed (3)

Label	Occurrences
San Joaquin Regional Rail Commission canonical	4
California passenger rail joint powers authorities	1
San Joaquin Joint Powers Authority	1

How this entity was disambiguated

This entity first appeared as the object of triple T458811 — 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: San Joaquin Regional Rail Commission
Context triple: [Altamont Corridor Express, operator, San Joaquin Regional Rail Commission]

A. Sacramento Southern Railroad
The Sacramento Southern Railroad is a heritage railway in Sacramento, California, offering excursion train rides along the Sacramento River as part of the California State Railroad Museum’s operations.
B. Santa Clara Valley Transportation Authority
The Santa Clara Valley Transportation Authority is the public transit agency that operates bus, light rail, and related transportation services throughout Santa Clara County in California’s Silicon Valley.
C. Peninsula Corridor Joint Powers Board
The Peninsula Corridor Joint Powers Board is a public agency formed by Bay Area counties to oversee and manage the Caltrain commuter rail service along the San Francisco Peninsula.
D. San Mateo County Transit District
San Mateo County Transit District is the public agency that oversees and manages bus and other transit services in San Mateo County, California.
E. San Francisco Muni
San Francisco Muni is the primary public transportation system in San Francisco, operating the city’s network of buses, light rail, historic streetcars, and cable cars.
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: San Joaquin Regional Rail Commission
Target entity description: The San Joaquin Regional Rail Commission is a public agency in California responsible for planning, managing, and overseeing regional passenger rail services in the San Joaquin Valley and surrounding areas.

A. Sacramento Southern Railroad
The Sacramento Southern Railroad is a heritage railway in Sacramento, California, offering excursion train rides along the Sacramento River as part of the California State Railroad Museum’s operations.
B. Santa Clara Valley Transportation Authority
The Santa Clara Valley Transportation Authority is the public transit agency that operates bus, light rail, and related transportation services throughout Santa Clara County in California’s Silicon Valley.
C. Peninsula Corridor Joint Powers Board
The Peninsula Corridor Joint Powers Board is a public agency formed by Bay Area counties to oversee and manage the Caltrain commuter rail service along the San Francisco Peninsula.
D. San Mateo County Transit District
San Mateo County Transit District is the public agency that oversees and manages bus and other transit services in San Mateo County, California.
E. San Francisco Muni
San Francisco Muni is the primary public transportation system in San Francisco, operating the city’s network of buses, light rail, historic streetcars, and cable cars.
F. None of above. chosen

Statements (46)

Predicate	Object
instanceOf	public agency ⓘ rail transportation authority ⓘ
basedIn	Central Valley of California ⓘ linked to: Central Valley
collaboratesWith	California Department of Transportation ⓘ linked to: Caltrans local transit agencies in Northern California ⓘ
country	United States ⓘ linked to: United States of America
focusesOn	air quality improvement through rail transit ⓘ regional mobility improvement ⓘ traffic congestion relief ⓘ
fundingSource	federal transportation funds ⓘ local government funds ⓘ state government funds ⓘ
governingBody	Board of Commissioners ⓘ
hasRole	rail service manager ⓘ rail service overseer ⓘ rail service planner ⓘ
hasWebsite	https://www.sjrrc.com/ ⓘ
headquartersLocation	Stockton, California ⓘ linked to: Stockton
industry	public transportation ⓘ rail transport ⓘ
jurisdiction	Alameda County ⓘ Contra Costa County ⓘ Merced County ⓘ San Joaquin County ⓘ Santa Clara County ⓘ Stanislaus County ⓘ
legalForm	joint powers authority ⓘ
locatedInTheAdministrativeTerritorialEntity	San Joaquin County ⓘ
modeOfTransport	passenger rail ⓘ
operates	Altamont Corridor Express ⓘ
oversees	Altamont Corridor Express operations ⓘ
purpose	managing regional passenger rail services ⓘ overseeing regional passenger rail services ⓘ planning regional passenger rail services ⓘ
regionServed	Northern California ⓘ San Joaquin Valley ⓘ
responsibleFor	rail capital projects in its service area ⓘ rail operations management for ACE ⓘ rail service planning in the San Joaquin Valley ⓘ
serviceArea	San Joaquin Valley and surrounding areas ⓘ
serviceType	commuter rail ⓘ regional rail ⓘ
shortName	SJRRC ⓘ
state	California ⓘ linked to: California, United States
transportationModeManaged	diesel commuter rail ⓘ
transportationSector	intercity and commuter rail ⓘ

How these facts were elicited

Referenced by (6)

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

Altamont Corridor Express → operator → San Joaquin Regional Rail Commission ⓘ

subject linked to: ACE

California Cars → usedByBrand → San Joaquin Joint Powers Authority ⓘ

linked to: San Joaquin Regional Rail Commission

Altamont Corridor Express → operator → San Joaquin Regional Rail Commission ⓘ

Altamont Corridor Express → owner → San Joaquin Regional Rail Commission ⓘ

Board of Commissioners (San Joaquin Regional Rail Commission) → partOf → San Joaquin Regional Rail Commission ⓘ

subject linked to: Board of Commissioners

California intercity passenger rail program → relatedTo → California passenger rail joint powers authorities ⓘ