Landover Road Line

Route L12 operates daily between Capital Plaza and Downtown Largo station providing service among the Landover community. Route L12 currently gets its buses out of Landover division.

{{See also|Martin Luther King Jr. Highway Line}}

The first proposal for a new Route L12 happened in 2012 when 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 will operate the A12 routing between Capital Plaza and Largo Town Center (now {{wmata|Downtown Largo}}) station via Landover station and Woodmore Town Center primarily running on Landover Road via Palmer Park and Hawthorne Street running along the old A12 routing. Stops between Martin Luther King Jr. Highway 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.{{cite web |title=MARYLAND PROPOSED BUS SERVICE CHANGES |url=https://www.wmata.com/about/public-hearings/upload/MD_Docket.pdf |accessdate=12 June 2023}}

The reason for the changes was that WMATA wanted to have one route running primarily along Martin Luther King Jr. Highway (A12) and another route running primarily on Landover Road (L12). However public feedback was opposed to the route change, which led WMATA to shelve the plans.

Later during WMATA's 2024 Fiscal Year Budget in March 2023, WMATA brought back the A12 and L12 proposal from 2014, which was almost identical to the original proposal.{{cite web |title=Fiscal Year 2024 Budget: Proposed Fare and Service Changes {{!}} WMATA |url=https://www.wmata.com/initiatives/budget/ |website=www.wmata.com |access-date=9 March 2023}} However one difference was route F14 would not be rerouted along Landover Road and instead remain on Brightest Road. Subsequently, the FY2024 budget was approved in April 2023, which included a new Route L12.{{cite web |title=WMATA Board approves $4.8 billion FY24 capital and operating budget |url=https://www.masstransitmag.com/management/article/53057516/wmata-board-approves-48-billion-fy24-capital-and-operating-budget |website=www.masstransitmag.com |access-date=12 June 2023}}{{cite web |title=Metro's Board Approves $4.8B Budget, Simplifies Fares and Increases Frequency of Service; Redesign of Better Bus Network {{!}} WMATA |url=https://www.wmata.com/about/news/Metros-Board-Approves-48B-Budget-Simplifies-Fares-and-Increases-Frequency-of-Service-Redesign-of-Better-Bus-Network.cfm |website=www.wmata.com |access-date=12 June 2023}}

In June 2023, WMATA announced the new L12 will begin service on June 25, 2023. The line would be named under the Landover Road Line and will operate every 20 minutes between Downtown Largo station and Capital Plaza via Lottsford Road, Woodmore Towne Centre, Landover Road, Greenleaf Road, Matthew Henson Avenue, Barlowe Road, Fire House Road, Hawthorne Street, Pinebrook Avenue, Landover Station, Hospital Drive, and Annapolis Road, replacing the A12 which was rerouted to serve New Carrollton station beginning along the intersection of Glenarden Parkway & Martin Luther King Jr. Highway.{{cite web |title=Metrobus Changes Begin Sunday, June 25, 2023 {{!}} WMATA |url=https://www.wmata.com/service/status/details/service-changes-June-2023.cfm |website=www.wmata.com |access-date=12 June 2023}}

As part of WMATA's Better Bus Redesign beginning on June 29, 2025, the L12 was renamed into the P40, keeping the same route with the exception that it no longer serves the former Prince George's Hospital Complex.{{cite web |title=Metro Board of Directors approves Better Bus Network Redesign, new bus routes to start next summer |url=https://www.wmata.com/about/news/Metro-Board-of-Directors-approves-Better-Bus-Network-Redesign-new-bus-routes-to-start-next-summer.cfm |website=WMATA |access-date=23 January 2025 |language=en}}

{{Reflist}}

• [https://www.wmata.com/schedules/timetables/upload/L12_230625.pdf L12 Landover Road Line] – wmata.com

L12