The MLK Highway–Suitland Line, designated Route P60 is a daily bus route operated by the Washington Metropolitan Area Transit Authority between New Carrollton station of the Orange and Silver Lines of the Washington Metro and Suitland station of the Green Line of the Washington Metro. The line operates every 12 minutes daily between 5 AM and 9 PM and 30 minutes after 9 PM. Route P60 trips roughly take 45 minutes.

Route Route P60 operates daily between New Carrollton station and Suitland station providing service among the Landover community, primarily operating along Martin Luther King Jr Highway. Route P60 gets its buses out of Landover division.

Former A12 Stops

Bus stopDirectionConnectionsPrince George's County, MarylandCapitol HeightsBus Bay BNorthbound station,Southbound terminal (Sundays only) Metrobus: 96, F14, V2, V4, X9 TheBus: 24, 25 Washington Metro: East Capitol Street / Maryland Park Drive Bidirectional (Sundays only) Metrobus: F14 TheBus: 24, 25East Capitol Street / Yost PlaceBidirectional (Sundays only) Metrobus: F14 TheBus: 24, 25Addison Road-Seat PleasantBus Bay DNorthbound station,Southbound terminal (Monday-Saturday)Bidirectional (Sundays only) Metrobus: C21, C22, C27, C29, J12, F14, P12, V12, V14 TheBus: 18, 20, 23 Washington Metro: Addison Road / Adak StreetBidirectional TheBus: 18Addison Road / Adel StreetBidirectional TheBus: 18Addison Road / Baltic StreetBidirectional TheBus: 18Addison Road / Crown StreetBidirectional TheBus: 18Addison Road / Dry Log StreetBidirectional TheBus: 18Addison Road / Eads StreetBidirectional TheBus: 18Addison Road / Seat Pleasant DriveNorthbound Metrobus: V14 TheBus: 18Addison Road / James Farmer WaySouthbound Metrobus: V14 TheBus: 18Martin Luther King Highway / Addison RoadNorthbound TheBus: 18Martin Luther King Highway / 65th AvenueSouthbound TheBus: 18Martin Luther King Highway / 69th PlaceBidirectional TheBus: 18Martin Luther King Highway / Greig StreetBidirectional TheBus: 18Martin Luther King Highway / 69th PlaceBidirectional TheBus: 18Martin Luther King Highway / Glen Willow DriveBidirectional TheBus: 18Martin Luther King Highway / Carrington AvenueBidirectional TheBus: 18Martin Luther King Highway / Hill RoadNorthbound TheBus: 18Martin Luther King Highway / Southland DriveSouthbound TheBus: 18Martin Luther King Highway / Sheriff RoadBidirectional Metrobus: F14 TheBus: 18, 23Martin Luther King Highway / Roosevelt AvenueBidirectional Metrobus: F14 TheBus: 18Martin Luther King Highway / Ryderwood CourtBidirectional Metrobus: F14 TheBus: 18Martin Luther King Highway / King Shopping CenterBidirectional Metrobus: F14 TheBus: 18Martin Luther King Highway / Columbia Park RoadSouthbound Metrobus: F12, F14 TheBus: 18Martin Luther King Highway / Belle Haven DriveNorthbound Metrobus: F12, F14 TheBus: 18Martin Luther King Highway / East Ridge DriveSouthbound Metrobus: F12Martin Luther King Highway / Flagstaff StreetNorthbound Metrobus: F12Martin Luther King Highway / Greenleaf RoadBidirectional Metrobus: F12Greenleaf Road / Muncy RoadSouthbound Metrobus: L12Greenleaf Road / Normandy RoadBidirectional Metrobus: L12Greenleaf Road / Romney CourtBidirectional Metrobus: L12Greenleaf Road / Matthew Henson AvenueBidirectional Metrobus: L12Matthew Henson Avenue / Barlowe RoadNorthbound Metrobus: L12Barlowe Road / Palmer Park RoadBidirectional Metrobus: L12Barlowe Road / Ray Leonard RoadBidirectional Metrobus: L12Barlowe Road / Allendale DriveBidirectional Metrobus: L12Barlowe Road / Landover RoadBidirectional Metrobus: L12Brightseat Road / Maple Ridge ApartmentsBidirectional Metrobus: F14 TheBus: 21, 21X, 22Brightseat Road / Maple Ridge ApartmentsSouthbound Metrobus: F14 TheBus: 21, 21X, 22Brightseat Road / Evarts StreetBidirectional Metrobus: F14 TheBus: 21, 22Brightseat Road / Girard StreetNorthbound Metrobus: F14 TheBus: 21, 21XBrightseat Road / Hamlin StreetBidirectional Metrobus: F14 TheBus: 21Brightseat Road / Reicher StreetBidirectional Metrobus: F14 TheBus: 21Brightseat Road / McLain StreetNorthbound Metrobus: F14 TheBus: 21Glenarden Parkway / Wesley StreetBidirectional Metrobus: F14Glenarden Parkway / Reed StreetBidirectional Metrobus: F14Glenarden Parkway / Municipal CenterBidirectional Metrobus: F14Glenarden Parkway / Martin Luther King Jr. HighwaySouthbound Metrobus: F14Glenarden Parkway / Hayes StreetNorthbound Metrobus: F14Hayes Street / Glenarden ParkwaySouthbound Metrobus: F14Hayes Street / Johnson AvenueBidirectional Metrobus: F14Johnson Avenue / Hayes StreetNorthbound Metrobus: F14Johnson Avenue / Martin Luther King Jr. HighwaySouthbound Metrobus: F14Martin Luther King Jr. Highway / Reed StreetNorthbound Metrobus: F14Martin Luther King Jr. Highway / Dellwood CourtSouthbound Metrobus: F14Ardwick Ardmore Road / West StreetNorthbound Metrobus: F14 TheBus: 21Ardwick Ardmore Road / Preston DriveSouthbound Metrobus: F14 TheBus: 21Ardwick Ardmore Road / #8335-8361Southbound Metrobus: F14 TheBus: 21Ardwick Ardmore Road / Whitetire RoadBidirectional Metrobus: F14 TheBus: 21Ardwick Ardmore Road / Ardwick PlaceBidirectional Metrobus: F12, F14 TheBus: 21Ardwick Ardmore Road / Pennsy DriveSouthbound Metrobus: F12, F14 TheBus: 21Corporate Drive / Garden City DriveNorthbound Metrobus: F12, F14New CarrolltonBus Bay CSouthbound station,Northbound terminal Metrobus: B21, B22, B24, B27, F4, F6, F12, F13, F14, G12, G14, T14, T18 MTA Maryland Commuter Bus TheBus: 15X, 16, 21, 21X Greyhound Peter Pan Bus Lines Washington Metro: MARC: Penn Line Amtrak: Northeast Regional, Palmetto, Vermonter MTA: Purple Line (Planned)

History

The Martin Luther King Jr. Highway Line began in 1978 consisting of routes A11, A12, A13, A15, and A17. Routes A11 and A12 operated between Capital Plaza and Federal Triangle in Downtown Washington D.C., via Annapolis Road, Baltimore Washington Parkway, Landover Road, Palmer Highway, Marlboro Pike, Pennsylvania Avenue, Independence Avenue, and Constitution Avenue. Route A13 operated between Federal Triangle and Washington Business Park and routes A15 and A17 provided weekday peak hour service between Dodge Park and Federal Triangle.

Route A12 originally operated by the Bradbury Heights Bus Line as the Kent Village Line in 1922. It then operated under the Washington Marlboro & Annapolis Motor Lines Inc. (WM&A). It also operated under the District Heights Line but was later replaced by the P12 and V14. The line was later acquired by WMATA on February 4, 1973.

On November 21, 1978 when Landover station opened, routes A11, A13, A15, and A17 were discontinued and route A12 was shorten to Potomac Avenue station discontinuing service to Downtown. Routes A11, A15, and A17 were replaced by both route A12 and the Orange Line while route A13 was replaced by route F13.

On November 22, 1980, when Addison Road station and Capitol Heights station opened, A12 was shortened even further to operate between Capital Plaza and Addison Road station Mondays through Saturdays, as both the Orange and Blue Lines would provide much faster and direct service between much of Prince George's County and Downtown Washington D.C. Route A12 was also extended to operate to Capitol Heights station via, East Capitol Street on Sundays replacing a portion of route F14 which doesn't operate on Sundays.

Route A11 was also reincarnated on November 22, 1980 to make a one way trip between Capital Plaza to Federal Triangle on Saturday mornings only before the first Orange Line trip from the New Carrollton station departs. Route A11 would mainly operate using the A12's former routing between Capital Plaza and the Federal Triangle in Downtown Washington D.C., except it would not serve Landover station.

In 1983, route A15 was reincarnated to operate between Capital Plaza and Addison Road station via Landsdowne Village Apartments in Landover during weekday peak periods using the same routing as A12 but instead serving Landsdowne Village Apartments.

On December 15, 2004, route A15 was discontinued and replaced by routes A11, A12, and Prince George's County's The Bus Route 22. Alternative service was provided by routes A12 between Capital Plaza and Landover Mall and The Bus Route 22 operated between Landover Mall and Landsdowne Village Apartments, via Morgan Boulevard station.Washington Metropolitan Area Transit Authority, Metrobus service changes, effective Saturday, Dec. 18, 2004 , December 2004

Even after Landover Mall had closed in 2002, routes A11 & A12 would still loop around the former mall due to Sears still being opened. On March 30, 2014, both A11 & A12 were rerouted to no longer serve the former site of the Landover Mall and were rerouted to operate along Brightseat Road, Glenarden Parkway, Ardwick Ardmore Road, Martin Luther King Jr. Highway, via route F14's routing, to provide weekly Metrobus service to Glenarden, due to Sears announcing that its Landover store will close in March 2014. This routing gives direct bus service to Landover station as it was only previously provided between Glenarden and New Carrollton station.

In 2014, WMATA proposed to split the A12 into two routes, with the A12 running between Addison Road station and New Carrollton station via Brightseat Road and Ardwick Industrial Park and discontinuing service to Capital Plaza and Landover station, primarily running along Martin Luther King Jr. Highway. A new Route L12 would operate the A12 routing between Capital Plaza and Largo Town Center (now ) station via Landover station and Woodmore Town Centre, primarily running on Landover Road via Palmer Park and Hawthorne Street, running along the old A12 routing. Stops between Martin Luther King Jr. Hwy and Brightseat Road will be replaced by a rerouted route F14 which will discontinue service along a portion of Brightseat Road being replaced by Route A12. Public feedback however opposed to the changes and the reroutes were not implemented.

On March 29, 2015, route A11 was discontinued making route A12 the only Route to operate the Martin Luther King Jr. Highway Line.

During the COVID-19 pandemic, route A12 was reduced to operate on its Saturday supplemental schedule beginning on March 16, 2020. However beginning on March 18, 2020, route A12 was further reduced to operate on its Sunday schedule operating between Capital Plaza and Capitol Heights station. Weekend service was also suspended beginning on March 21, 2020. Weekend service was restored on a limited basis on July 18, 2020. Full service resumed on August 23, 2020.

In February 2021 during WMATA's FY2022 budget crisis, WMATA proposed to add late-night service to 2:00 AM on Route A12 beginning in July 2021, but would reduce it back to midnight beginning in January 2022. Subsequently on April 22, 2021, WMATA approved the FY2022 budget and received federal funding to avoid service cuts.

On June 6, 2021, late-night service was increased to operate up to 2:00 AM on Route A12.

On June 10, 2021, WMATA proposed to increase the A12 to operate every 20 minutes daily between 7:00 AM to 9:00 PM daily as part of WMATA's Pandemic Recovery Plan. On September 5, 2021, Route A12 service was increased to operate every 20 minutes daily between 7:00 AM and 9:00 PM.

Due to rising cases of the COVID-19 Omicron variant, the line was reduced to its Saturday service on weekdays beginning on January 10, 2022. Full weekday service resumed on February 7, 2022.

In 2023, WMATA brought back the proposed A12 and L12 route split, which is roughly the same as the 2014 proposals; however, the F14 would not be rerouted along Brightseat Road.