Editing Bay Area Rapid Transit (section)

=== Lines ===
{{anchor|lettered lines|A-Line|C-Line|K-Line|L-Line|M-Line|R-Line|S-Line|W-Line|Y-Line}}The routes run on track segments ("lines"), which are internally, but not commonly, known by letters.<ref name="SystemFacts" /><ref name="segments">{{Cite web |date=October 2012 |title=Rail Capacity Improvement Study for Heavy Rail Transit Operations |url=https://www.transit.dot.gov/sites/fta.dot.gov/files/FTA_Report_No._0035.pdf |publisher=Federal Transit Administration |page=52}}</ref><ref>{{Cite web |last=Bay Area Rapid Transit |title=Geospatial Data |url=https://www.bart.gov/schedules/developers/geo |access-date=April 21, 2022}}</ref>
{| class="wikitable sortable"
!Line
!class="unsortable"|Endpoints
!Opened
!class="unsortable"|Right of way
|-
! colspan=4 style="text-align: center;" | Heavy rail
|-
|'''A-Line'''
|[[Oakland Wye]] – [[Fremont station (BART)|Fremont]]
|September 11, 1972
|Former [[Western Pacific Railroad]] right-of-way ([[Union Pacific Railroad|UP]] [[Oakland Subdivision]]), tunnel near the Oakland Wye
|-
|'''C-Line'''
|[[Rockridge station|Rockridge]] – [[Pittsburg/Bay Point station|Pittsburg/Bay Point]]
|May 21, 1973 (to [[Concord station (BART)|Concord]])<br />December 16, 1995 (to [[North Concord/Martinez station|North Concord/Martinez]])<br />December 7, 1996 (to Pittsburg/Bay Point)
|[[California State Route 24|SR 24]] median, [[Berkeley Hills Tunnel]], former [[Sacramento Northern Railway]] right-of-way, [[California State Route 4|SR 4]] median
|-
|'''K-Line'''
|Oakland Wye – Rockridge
|September 11, 1972 (to [[MacArthur station (BART)|MacArthur]])<br />May 21, 1973 (to Rockridge)
|Tunnel under Broadway, SR 24 median
|-
|'''L-Line'''
|[[Bay Fair station|Bay Fair]] – [[Dublin/Pleasanton station|Dublin/Pleasanton]]
|May 10, 1997
|Median of [[Interstate 238|I-238]], median of [[Interstate 580 (California)|I-580]]
|-
|'''M-Line'''
|Oakland Wye – Daly City Yard (north of [[Colma station|Colma]])
|November 5, 1973 (Daly City – [[Montgomery Street station|Montgomery Street]])<br />September 16, 1974 (Montgomery Street – Oakland Wye)<br />December 9, 1988 (to Daly City Yard)
|Elevated above 5th and 7th streets, [[Transbay Tube]], [[Market Street subway|tunnel under Market Street]] and Mission Street, former [[Southern Pacific Railroad]] right-of-way ([[Ocean View Branch]])
|-
|'''R-Line'''
|MacArthur – [[Richmond station (California)|Richmond]]
|January 29, 1973
|Elevated above Martin Luther King Jr. Way, tunnel under Adeline St and Shattuck Ave, former [[Atchison, Topeka and Santa Fe Railway|Santa Fe]] right-of-way
|-
|'''S-Line'''
|Fremont – [[Berryessa/North San José station|Berryessa/North San José]]
|March 25, 2017 (to [[Warm Springs/South Fremont station|Warm Springs/South Fremont]])<br />June 13, 2020 (to Berryessa/North San José)<ref name="Glover 2020" />
|Tunnel under [[Fremont Central Park]], former Western Pacific Railroad right-of-way (San Jose Branch)
|-
|{{nowrap|'''W-Line'''}}
|Daly City Yard – [[Millbrae station|Millbrae]]
|February 24, 1996 (to Colma)<br />June 22, 2003 (to Millbrae)
|Former Southern Pacific Railroad right-of-way ([[Ocean View Branch]]), shared [[Caltrain]] right-of-way
|-
|'''Y-Line'''
|W-Line – [[San Francisco International Airport station|San Francisco International Airport]]
|June 22, 2003
|Elevated wye into [[San Francisco International Airport]]
|-
! colspan=4 style="text-align: center;" | Light rail
|-
|'''E-Line'''
|Pittsburg/Bay Point – [[Antioch station (BART)|Antioch]]
|May 26, 2018
|SR 4 median
|-
! colspan="4" |Automated guideway transit (AGT)
|-
|'''H-Line'''
|Coliseum – [[Oakland International Airport station|Oakland International Airport]]
|November 22, 2014
|Mostly elevated above Hegenberger Road, depressed section below Doolittle Drive
|}

<!--===Network map===
{{Rapid transit OSM map
| system_qid   = Q610120
| frame-lat    = 37.80
| frame-long   = -122.27
| frame-width  = 750
| frame-height = 470
| zoom         = 9
| length       = yes
}}-->