Green Line (Washington Metro)

Green Line
Green Line
	Southbound Green Line train arriving at Fort Totten in July 2019
Overview
Status	Operating
Locale	Prince George's County, MD; Washington, D.C.
Termini	Branch Avenue; Greenbelt;
Stations	21
Service
Type	Rapid transit
System	Washington Metro
Operator(s)	Washington Metropolitan Area Transit Authority
Rolling stock	3000-series, 6000-series, 7000-series
History
Opened	May 11, 1991
Technical
Line length	23.04 mi (37.1 km)
Number of tracks	2
Character	At-grade, elevated, and underground
Track gauge	4 ft 8+1⁄4 in (1,429 mm)
Electrification	Third rail, 750 V DC
Route map
Route map
	Capital Subdivision
	to Baltimore
	I-495
	Capital Beltway
	Capital Subdivision
	to Union Station
	MD
	DC
	I-395
	Southwest Freeway
	I-295
	Anacostia Freeway
	DC
	MD
	All stations are accessible

The Green Line is a rapid transit line of the Washington Metro system, consisting of 21 stations in Washington, D.C., and Prince George's County, Maryland, United States. The Green Line runs from Branch Avenue to Greenbelt, connecting the southeast suburbs to the northeast suburbs through downtown Washington, D.C.

It was the last line in the original Metro plan to be constructed. Planning for the Green Line began in 1968, at which point it was supposed to serve some of the poorest neighborhoods in Washington, D.C. Delays arose due to various disputes, including disagreements over funding and the line's routing. Partial service began in 1991. The line was completed on January 13, 2001, with the opening of the line's final five stations, marking the completion of the original 101-mile (163 km) system.

It is one of three north–south lines through the city of Washington. The Green Line shares track with the Yellow Line from L'Enfant Plaza to Mount Vernon Square.

On weekdays, trains run every six minutes until 9:30 p.m. and every 7.5 minutes afterward. On weekends, trains run every eight minutes.