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Bay Area Rapid Transit (BART) is a heavy rail rapid transit system in the San Francisco Bay Area in California, United States. With average weekday ridership around 165,000 passengers in June 2024, BART is the fifth busiest rapid transit system in the United States.^[1]^[2] BART is administered by the Bay Area Rapid Transit District, a special district government agency formed by Alameda, Contra Costa, and San Francisco counties.

BART has 50 stations: 19 on the surface, 15 elevated, and 16 underground (i.e. subway).^[3] 22 stations are in Alameda County, 12 are in Contra Costa, and 8 are in San Francisco. 6 stations are in San Mateo County and 2 are in Santa Clara County; those counties are not part of the BART special district, but contribute to operations funding. As of June 2024^[update], Montgomery Street has the highest ridership and Oakland International Airport has the lowest.^[1] Every day before 9 pm, BART trains run on five principal routes; four are transbay routes connecting San Francisco to Oakland and various destinations in the East Bay, while the Orange Line runs exclusively in the East Bay. The Green and Red lines do not run after 9 pm, but all stations remain accessible by transfers via other routes.

BART's first route between Fremont and MacArthur, the Orange Line, opened in September 1972; it was extended to Richmond in January 1973. Service began between Concord and MacArthur on the Yellow Line in May 1973, and between Montgomery Street and Daly City in November 1973. The original system was completed in September 1974 when the underwater Transbay Tube and West Oakland opened. BART's three routes then were the Orange, Yellow, and Green lines. Embarcadero opened as an infill station in 1976, and direct Richmond–Daly City service began operating that year.^[4]

The Yellow Line was extended to North Concord/Martinez in 1995, and to Colma and Pittsburg/Bay Point in 1996. BART's fifth route, the Blue Line, began service with a new branch to Dublin/Pleasanton in 1997. The San Mateo County line was extended south from Colma to San Francisco International Airport and Millbrae in 2003.^[4] A second infill station, West Dublin/Pleasanton, opened in 2011. The automated guideway transit (AGT) Oakland Airport Connector opened in 2014 to serve Oakland International Airport.^[5] BART service was extended south from Fremont to Warm Springs/South Fremont in 2017, then to Berryessa/North San José in 2020. A diesel multiple unit feeder service, eBART, opened from Pittsburg/Bay Point to Antioch in 2018. Several additional stations, including a subway through San Jose to Santa Clara, are planned or proposed.

Services

BART operates five named and interlined heavy rail services plus one separate automated guideway line. All of the heavy rail services run through Oakland, and all but the Orange Line run through the Transbay Tube to San Francisco. All five services run until 9 pm; only three services operate evenings after 9 pm, as well as some Sundays during maintenance work. All stations are served during all service hours.^[6] The eastern segment of the Yellow Line, between Antioch and the transfer platform east of Pittsburg/Bay Point, uses different rolling stock and is separated from the rest of the line.

Unlike most other rapid transit and rail systems around the world, BART lines were not primarily referred to by shorthand designations or their color names (although the colors used on maps have been constant since 1980). The services were mainly identified on maps, schedules, and station signage by the names of their termini. However, the new fleet displays line colors more prominently, and BART has begun to use color names in press releases and GTFS data.^[7]^[8] In 2022, BART formally announced on Twitter they were using colors on the line map and officially.^[9]

	Route name	First service	Termini		Service times
O	Orange Line	September 11, 1972	Berryessa/North San José	Richmond	Operates during all service hours.
Y	Yellow Line	May 21, 1973	San Francisco International Airport or Millbrae (after 9pm)	Antioch	Operates during all service hours. Daytime service terminates at SFO, while evening (after 9 pm) service terminates at Millbrae.
G	Green Line	November 16, 1974	Daly City	Berryessa/North San José	No evening (after 9 pm) service.
R	Red Line	April 19, 1976	Millbrae	Richmond	No evening (after 9 pm) service.
B	Blue Line	May 10, 1997	Daly City	Dublin/Pleasanton	Operates during all service hours.
OAK	Oakland Airport Connector	November 22, 2014	Oakland International Airport	Coliseum	Operates during all service hours.

Stations

BART has 50 passenger stations, of which 47 are high-platform rapid transit stations. Oakland International Airport is served by the Oakland Airport Connector, which uses cable-hauled automated guideway transit (AGT) rolling stock; Coliseum has separate platforms for rapid transit trains and AGT trains. Antioch and Pittsburg Center have low platforms for use with the diesel multiple unit (DMU) trains used on that section of the line. A transfer platform east of Pittsburg/Bay Point, which does not have street access and is not designated as a unique station, provides cross-platform transfers between the rapid transit and DMU sections of the line.

Seven stations are designated as transfer points between services; timed cross-platform transfers are available between the Orange and Yellow lines at MacArthur (southbound) and 19th Street Oakland (northbound). Nine stations are the terminal of one or more services; Coliseum is also a transfer station. Ten stations have connections available to other rail services – Amtrak, Caltrain, Muni Metro, and VTA light rail. All stations are served during all operating hours.

^	Transfer stations within the BART system
^†	Transfer stations that are also line termini
†	Line termini
	Stations with connections to other rail systems

Station	Line(s)	Connections	Location	Opened^[4]	Ridership^[1]	Parking spaces
12th Street Oakland City Center	O Orange Line R Red Line Y Yellow Line	—	Oakland	September 11, 1972	5,062	0
16th Street Mission	B Blue Line G Green Line R Red Line Y Yellow Line	—	San Francisco	November 5, 1973	5,600	0
19th Street Oakland ^	O Orange Line R Red Line Y Yellow Line	—	Oakland	September 11, 1972	4,492	0
24th Street Mission	B Blue Line G Green Line R Red Line Y Yellow Line	—	San Francisco	November 5, 1973	5,364	0
Antioch †	Y Yellow Line †	—	Antioch	May 26, 2018	1,721	1,012
Ashby	O Orange Line R Red Line	—	Berkeley	January 29, 1973	1,943	715
Balboa Park ^	B Blue Line G Green Line R Red Line Y Yellow Line	Muni Metro:	San Francisco	November 5, 1973	3,865	0
Bay Fair ^	B Blue Line G Green Line O Orange Line	—	San Leandro	September 11, 1972	2,452	1,641
Downtown Berkeley	O Orange Line R Red Line	—	Berkeley	January 29, 1973	4,994	0
Berryessa/North San José †	G Green Line † O Orange Line †	—	San José	June 13, 2020	1,291	1,527
Castro Valley	B Blue Line	—	Castro Valley	May 10, 1997	1,175	1,123
Civic Center/UN Plaza	B Blue Line G Green Line R Red Line Y Yellow Line	Muni Metro: (at surface stops)	San Francisco	November 5, 1973	9,373	0
Coliseum †	OAK Oakland Airport Connector † B Blue Line G Green Line O Orange Line	Amtrak: Capitol Corridor	Oakland	September 11, 1972	2,555	847
Colma	R Red Line Y Yellow Line	—	Colma	February 24, 1996	1,455	2,238
Concord	Y Yellow Line	—	Concord	May 21, 1973	2,527	2,367
Daly City †	B Blue Line † G Green Line † R Red Line Y Yellow Line	—	Daly City	November 5, 1973	3,969	2,068
Dublin/Pleasanton †	B Blue Line †	—	Dublin/Pleasanton	May 10, 1997	3,130	2,927
El Cerrito del Norte	O Orange Line R Red Line	—	El Cerrito	January 29, 1973	3,384	2,198
El Cerrito Plaza	O Orange Line R Red Line	—	El Cerrito	January 29, 1973	1,965	761
Embarcadero	B Blue Line G Green Line R Red Line Y Yellow Line	Muni Metro: (at surface stops)	San Francisco	May 27, 1976	15,460	0
Fremont	G Green Line O Orange Line	—	Fremont	September 11, 1972	1,983	2,030
Fruitvale	B Blue Line G Green Line O Orange Line	—	Oakland	September 11, 1972	3,694	1,268
Glen Park	B Blue Line G Green Line R Red Line Y Yellow Line	Muni Metro: (at San Jose/Glen Park)	San Francisco	November 5, 1973	3,207	53
Hayward	G Green Line O Orange Line	—	Hayward	September 11, 1972	2,104	1,473
Lafayette	Y Yellow Line	—	Lafayette	May 21, 1973	1,625	1,629
Lake Merritt	B Blue Line G Green Line O Orange Line	—	Oakland	September 11, 1972	2,760	207
MacArthur ^	O Orange Line R Red Line Y Yellow Line	—	Oakland	September 11, 1972	3,653	602
Millbrae †	R Red Line Y Yellow Line †	Caltrain	Millbrae	June 22, 2003	1,846	2,900
Milpitas	G Green Line O Orange Line	VTA light rail:	Milpitas	June 13, 2020	1,269	1,631
Montgomery Street	B Blue Line G Green Line R Red Line Y Yellow Line	Muni Metro: (at surface stops)	San Francisco	November 5, 1973	12,798	0
North Berkeley	O Orange Line R Red Line	—	Berkeley	January 29, 1973	1,760	822
North Concord/Martinez	Y Yellow Line	—	Concord	December 16, 1995	628	1,977
Oakland International Airport †	OAK Oakland Airport Connector †	OAK	Oakland	November 22, 2014	719	0
Orinda	Y Yellow Line	—	Orinda	May 21, 1973	1,266	1,406
Pittsburg/Bay Point †	Y Yellow Line	—	Pittsburg	December 7, 1996	1,969	1,992
Pittsburg Center	Y Yellow Line	—	Pittsburg	May 26, 2018	490	262
Pleasant Hill/Contra Costa Centre	Y Yellow Line	—	Walnut Creek	May 21, 1973	2,460	3,011
Powell Street	B Blue Line G Green Line R Red Line Y Yellow Line	Muni Metro: (at surface stops) (at Union Square/Market Street)	San Francisco	November 5, 1973	11,617	0
Richmond †	O Orange Line † R Red Line †	Amtrak: California Zephyr, Capitol Corridor, San Joaquins	Richmond	January 29, 1973	2,358	624
Rockridge	Y Yellow Line	—	Oakland	May 21, 1973	2,500	903
San Bruno	R Red Line Y Yellow Line	—	San Bruno	June 22, 2003	1,421	1,083
San Francisco International Airport †	Y Yellow Line † R Red Line †	SFO	San Mateo County	June 22, 2003	4,091	0
San Leandro	B Blue Line G Green Line O Orange Line	—	San Leandro	September 11, 1972	3,221	1,224
South Hayward	G Green Line O Orange Line	—	Hayward	September 11, 1972	1,404	1,207
South San Francisco	R Red Line Y Yellow Line	—	South San Francisco	June 22, 2003	1,275	3,500
Union City	G Green Line O Orange Line	—	Union City	September 11, 1972	1,816	1,197
Walnut Creek	Y Yellow Line	—	Walnut Creek	May 21, 1973	2,850	2,089
Warm Springs/South Fremont	G Green Line O Orange Line	—	Fremont	March 25, 2017	1,234	2,082
West Dublin/Pleasanton	B Blue Line	—	Dublin/Pleasanton	February 19, 2011	1,278	1,190
West Oakland	B Blue Line G Green Line R Red Line Y Yellow Line	—	Oakland	September 16, 1974	3,690	156

Future stations

The four-station Phase II of the Silicon Valley BART extension will add underground stations at 28th Street/Little Portugal, Downtown San José, and Diridon in San José, plus the surface-level Santa Clara station; it is planned to open in 2036.^[10] An infill station on the Warm Springs extension at Irvington is planned to open in 2031. Two additional infill stations–the surface-level Calaveras on the Silicon Valley extension and the elevated Doolittle on the Oakland Airport Connector–are proposed but not yet funded or scheduled. Several of these future stations connect with other rail services in the South Bay region, including Altamont Corridor Express, which does not yet have a connection with BART.

Station	Line(s)	Connections	Location	Planned opening
Irvington	G Green Line O Orange Line	—	Fremont	2031
28th Street/Little Portugal	G Green Line O Orange Line	—	San José	2036^[10]
Downtown San José	G Green Line O Orange Line	VTA light rail:	San José	2036^[10]
Diridon	G Green Line O Orange Line	Amtrak: Coast Starlight, Capitol Corridor Caltrain Altamont Corridor Express VTA light rail:	San José	2036^[10]
Santa Clara †	G Green Line † O Orange Line †	Amtrak: Capitol Corridor Caltrain Altamont Corridor Express	Santa Clara	2036^[10]
Doolittle	OAK Oakland Airport Connector	—	Oakland
Calaveras	G Green Line O Orange Line	—	Milpitas

References

^ ^a ^b ^c "Monthly Ridership Reports". San Francisco Bay Area Rapid Transit District. June 2024.
^ "Transit Ridership Report: Fourth Quarter 2019" (PDF). American Public Transportation Association. February 27, 2020. Archived (PDF) from the original on May 23, 2020. Retrieved May 24, 2020 – via Ridership Report page. {{cite web}}: External link in |via= (help)
^ "System Facts". Bay Area Rapid Transit (BART). 2021. Archived from the original on 2017-02-23. Retrieved 2008-10-06.
^ ^a ^b ^c "BART Chronology January 1947 – March 2009" (PDF). San Francisco Bay Area Rapid Transit District. March 2009. Archived from the original (PDF) on October 13, 2013.
^ "BART to OAK service opens in time for Thanksgiving travel" (Press release). San Francisco Bay Area Rapid Transit District. November 21, 2014. Archived from the original on February 22, 2021. Retrieved December 20, 2014.
^ "Schedules". Bay Area Rapid Transit District. Archived from the original on January 20, 2019. Retrieved February 14, 2011.
^ "New Train Car Project". Bay Area Rapid Transit District. Archived from the original on February 13, 2021. Retrieved January 29, 2018.
^ "February 11 schedule change impacts weekdays and Sundays" (Press release). San Francisco Bay Area Rapid Transit District. January 15, 2019. Archived from the original on May 9, 2020. Retrieved May 24, 2020.
^ "BART's New Map Uses Colorful Names for Its Lines". Funcheap. Archived from the original on 2023-04-27. Retrieved 2023-04-27.
^ ^a ^b ^c ^d ^e Greschler, Gabriel (October 4, 2023). "San Jose BART extension will take 10 years longer than expected — at more than double the cost". The Mercury News. Archived from the original on October 5, 2023. Retrieved October 4, 2023.