Riggs Road Line

Route R1 and R2 provides service along Riggs Road between Fort Totten station and Adelphi or Calverton. Route R1 operates in the weekday peak-hour direction only while route R2 operates daily. The line operates every 20–30 minutes during weekday peak hours, 35 minutes at all other times on weekdays, and 55-65 on the weekends.

Routes R1 and R2 currently operates from Bladensburg division but had some trips operated by Northern division during peak hours until 2018. The line often utilizes articulated buses due to its high ridership volume.

The Riggs Road Line was originally operated by routes R8 and R9 beginning in the 1970s running from Downtown DC to Calverton. Around the late 1970s, service to Downtown was discontinued and was replaced by the Red Line.{{cite web |last1=Pierre |first1=Robert |title=METRO SHUFFLING ITS BUS SCHEDULE |url=https://www.washingtonpost.com/archive/local/1993/12/09/metro-shuffling-its-bus-schedule/29c11358-4cae-44aa-91f7-d1b863257131/ |accessdate=23 February 2020}}

In 1975, the R2 was created as a new Metrobus Route to operate as part of the Calverton-Kennedy Center Line between the Kennedy Center and Great Oaks Center (Calverton), via F Street NW, New Hampshire Avenue NW, 19th Street NW (southbound), 18th Street NW (northbound), Connecticut Avenue NW, Columbia Road NW, Harvard Street NW (northbound), Mount Pleasant Street NW (northbound), Irving Street NW (eastbound), Park Place NW (southbound), Michigan Avenue NW/NE, Queens Chapel Road, Belcrest Road, the Prince George's Plaza Shopping Center, Toledo Road, Adelphi Road, Campus Drive, Baltimore Avenue, Rhode Island Avenue, Powder Mill Road, and Cherry Hill Road. On February 6, 1978, the R2 was rerouted to serve as part of the Queens Chapel Road Line running with routes R4, R6, and R7. Route R2 operated between the newly opened Brookland–CUA station and Centerpark Office Park in Calverton, via Queens Chapel Road, Belcrest Road, Prince George's Plaza, Baltimore Avenue, Rhode Island Avenue, and Powder Mill Road.

In 1975 the R4 was created as a new Metrobus Route to operate as part of the Crystal City-Calverton Line between Crystal City in Virginia and Great Oaks Center (Calverton), via the 14th Street bridges, Independence Avenue, 1st Street NE, Columbus Circle, Washington Union Station, Massachusetts Avenue NE, North Capitol Street NW, Riggs Road, Powder Mill Road, Beltsville Drive, Calverton Boulevard, and Cherry Hill Road.{{Cite news |date=2023-12-20 |title=Major Bus Route Changes Set Tuesday |url=https://www.washingtonpost.com/archive/local/1978/02/19/major-bus-route-changes-set-tuesday/08c241f2-d299-42e1-92df-ea1250dada79/ |access-date=2024-04-16 |work=Washington Post |language=en-US |issn=0190-8286}}

Around the same time, route R8 along with the R4 would operate between Calverton and Crystal City station but would later be shortened to Fort Totten station. Route R5 would also operate between Fort McNair and Kennedy Center but would be later replaced.

On February 19, 1978, shortly after both Fort Totten station and Brookland–CUA stations opened, the R4 was rerouted to operate as part of the Queens Chapel Road Line between Brookland-CUA and Hyattsville. Once this change took place, the R8 replaced R4's routing on the Riggs Road Corridor, by operating between the Fort Totten station and Great Oaks Center (Calverton). In later years, the R9 would join the R8.

On December 11, 1993,{{cite web |last1=Pierre |first1=Robert |title=METRO SHUFFLING ITS BUS SCHEDULE |url=https://www.washingtonpost.com/archive/local/1993/12/09/metro-shuffling-its-bus-schedule/29c11358-4cae-44aa-91f7-d1b863257131/ |accessdate=23 February 2020}} Routes R8 and R9 were discontinued and replaced by the R2, originally apart of the Queens Chapel Road Line, which was rerouted to operate between Fort Totten station and Great Oaks Center (Calverton), via Prince George's Plaza station and Prince George's Plaza, and Riggs Road. Service to Brookland–CUA was replaced by the R4.

Also, new Routes R1 and R5 would join the R2. Route R1 would only operate between Fort Totten and Adelphi during the weekday peak hours, skipping the R2's diversion into Lewisdale and Prince George's Plaza and remaining on Riggs Road. The route would make a loop through Adelphi via Metzerott Road, New Hampshire Avenue, Adelphi Road, and Edwards Way, to reach its terminus at Edwards Way & Riggs Road (Adelphi). Route R5 would also operate during the weekday peak hours and would follow the R2's routing except the route would skip Prince George's Plaza.

Later around the 1990s, Route R7, which operated as part of the Queens Chapel Road Line alongside Routes R2, R4, and R6, was restored to operate as part of the Riggs Road Line between the Fort Totten station and Great Oaks Center (Calverton), via R2 and R5's routing but except it would divert into the United States Army Research Laboratory along Floral Drive.{{cite web |title=Technical Memorandum #1: Transit Service Assessment |url=https://www.wmata.com/service/bus/upload/Riggs-Road-Line-Transit-Service-Assessment.pdf |accessdate=23 February 2020}} The R7 would also skip the R2's diversion to Prince George's Plaza.

In June 1996 when the Great Oaks Center closed,{{Cite news |date=2024-01-07 |title=The Great Exodus at Md.'s Great Oaks |url=https://www.washingtonpost.com/archive/local/1996/05/04/the-great-exodus-at-mds-great-oaks/2f75e955-d030-4d16-b0c0-cd86a79ebbd1/ |access-date=2024-04-16 |work=Washington Post |language=en-US |issn=0190-8286}}{{Cite web |title=Maryland State Archives - Guide to Government Records |url=https://guide.msa.maryland.gov/pages/history.aspx?ID=SH244#:~:text=The%20closure%20of%20the%20Great,and%20certification%20for%20federal%20Medicaid |access-date=2024-04-16 |website=guide.msa.maryland.gov}} the R2, R5, and R7 Metrobus Routes were rerouted to terminate at the Orchard Shopping Center.

In 1998, route R7 was eliminated due to security concerns at the United States Army Research Laboratory. Service was replaced by route R2.

On May 15, 2003, the original bus bays inside Prince Georges Plaza Shopping Center, were demolished to build a new Target store. Route R2 along with routes 86, C4, F4, F6, F8, R3, R4 and TheBus 13, 14, 18 have stopped entering and looping inside around the mall.{{cite web|url=http://www.gazette.net/gazette_archive/2003/200320/hyattsville/news/158762-1.html|title=Metrobus service suspended at Prince Georges Plaza|website=www.gazette.net|access-date=February 23, 2020 |archive-url=https://web.archive.org/web/20190329001034/http://www.gazette.net/gazette_archive/2003/200320/hyattsville/news/158762-1.html |archive-date=March 29, 2019 |url-status=dead}} This change did not affect routes R1 or R5.

In 2010, a series of proposals were created for Routes R2 and R5 as part of WMATA's FY2011 and FY2012 budget.{{cite web|url=https://www.wmata.com/about/public-hearings/upload/bus_md.pdf|format=PDF|title=MARYLAND PROPOSED BUS SERVICE CHANGES : FISCAL YEAR 2011|website=Wmata.com\accessdate=23 February 2020}} In the proposal, WMATA was to reroute route R2 into Lewisdale neighborhood along 23rd avenue and University Boulevard replacing route R3, which is proposed to be eliminated. Route R2 would also discontinue service to Prince George's Plaza station with alternative service provided by routes C4, F4, and TheBus 18. Route R5 would be discontinued and replaced by a more frequent R2 service. Route R1 would not be affected by the changes.

The proposal would be brought up again in 2011 sharing the same proposal idea from the 2010 proposed changes.{{cite web |title=B11-03: Proposed Adjustments to Metrobus Service; October 11-13, 2011 |url=https://www.wmata.com/about/public-hearings/B11-03-Proposed-Adjustments-to-Metrobus-Service-October-11.cfm |accessdate=19 May 2020}}{{cite web |title=Notice of Public Hearing Washington Metropolitan Area Transit Authority Proposed Adjustments to Metrobus Service Docket B11-03 |url=https://www.wmata.com/about/public-hearings/upload/B11-03_docket_final.pdf |accessdate=19 May 2020}}

On June 17, 2012, Route R2 was changed to operate along 23rd Avenue, and University Boulevard before resuming its regular route along Riggs Road to serve the Lewisdale neighborhood, which replaced the R3 which was shortened to terminate at Prince George's Plaza. Service to Prince George's Plaza was discontinued and replaced by TheBus Route 18. Route R5 was also discontinued and replaced by additional R1 and R2 service.{{cite web|url=https://www.wmata.com/about/news/pressreleasedetail.cfm?ReleaseID=5233|title=Metro News Release|website=wmata.com|accessdate=12 May 2020|archive-url=https://web.archive.org/web/20181214065918/https://www.wmata.com/about/news/pressreleasedetail.cfm?ReleaseID=5233|archive-date=December 14, 2018|url-status=dead}}

On December 30, 2018, WMATA announced a proposal to make changes to the R2 routing.{{cite web|url=https://www.wmata.com/service/bus/riggs-road-study.cfm|title=Riggs Road Service Evaluation Study - WMATA|website=www.wmata.com}}

One proposal was to extend the R2 beyond Calverton to Muirkirk station on the MARC Camden Line or to Greenbelt station discontinuing the Calverton loop.{{cite web|url=https://www.wmata.com/service/bus/upload/Riggs-Road-Proposal-1-R2-Extension-map.pdf|title=Riggs-Road-Proposal-1-R2-Extension-map.pdf|author=|date=|website=wmata.com|access-date=January 27, 2019}}

The second proposal was to eliminate the segment of Route R2 service 23rd Avenue in Lewisdale and discontinue the R1 completely to create a more direct route for the R2 and to simplify the line.{{cite web|url=https://www.wmata.com/service/bus/upload/Riggs-Road-Proposal-2-Adelphi-loop-alternatives-map.pdf|title=Riggs-Road-Proposal-2-Adelphi-loop-alternatives-map.pdf|author=|date=|website=wmata.com|access-date=January 27, 2019}}{{cite web|url=https://www.wmata.com/service/bus/upload/Riggs-Road-Proposal-2-New-Riggs-Road-Line-R2-map.pdf|title=Riggs-Road-Proposal-2-New-Riggs-Road-Line-R2-map.pdf|author=|date=|website=wmata.com|access-date=January 27, 2019}} The discontinued segments in Lewisdale would be replaced by a rerouted route F8 and the already running TheBus route 18. Route F8 was proposed to make all stops on the proposed discontinued route R2 service in Lewisdale and discontinue service along Adelphi road.{{cite web|url=https://www.wmata.com/service/bus/upload/Riggs-Road-Proposal-2-A-Adelphi-Road-F8-reroute-map.pdf|title=Riggs-Road-Proposal-2-A-Adelphi-Road-F8-reroute-map.pdf|author=|date=|website=wmata.com|access-date=January 27, 2019}} If the proposals are made, the R2 would provide a more direct route to Calverton or Fort Totten for customer convenience with the R1 being discontinued due to it being a duplication of the R2.

Other proposals mentioned that weren't considered were the following:{{cite web |title=Technical Memorandum #3: Service Plan Recommendations |url=https://www.wmata.com/service/bus/upload/Riggs-Road-Line-Service-Plan-Recommendations.pdf |accessdate=23 February 2020}}

• Creating a new MetroExtra route for the Riggs Road Line.
• Moving either route R1 or R2 terminal to Prince George's Plaza (now {{wmata|Hyattsville Crossing}}) station with the other route remaining at Fort Totten station.
• Rerouting route R1 to Takoma Langley Crossroads Transit Center discontinuing service to Adelphi.
• Giving route R1 daily service but having route R2 be rerouted to Prince George's Plaza (now {{wmata|Hyattsville Crossing}}) station from Calverton.
• Swap route R1 and R2 routing in Lewisdale with R2 remaining on Riggs Road while R1 is rerouted along 23rd Avenue and University Boulevard.

None of the proposals went through due to public feedback.{{cite web |title=Technical Memorandum #2: Public Outreach and Input Report |url=https://www.wmata.com/service/bus/upload/Riggs-Road-Line-Public-Outreach-Input-Report.pdf |accessdate=23 February 2020}}

During the COVID-19 pandemic, all route R1 service was suspended and route R2 was reduced to operate on its Saturday schedule beginning on March 16, 2020.{{cite web |title=Metro announces additional COVID-19 changes, including reduced service beginning Monday {{!}} WMATA |url=https://www.wmata.com/about/news/Metro-announces-additional-COVID-19-changes.cfm |website=www.wmata.com |access-date=31 January 2021}} However on March 18, 2020, route R2 was further reduced to operate on its Sunday schedule with weekend service suspended beginning on March 21, 2020.{{cite web |title=Metro Service Levels & Hours Further Reduced to Support Essential Trips Only, Starting Wednesday {{!}} WMATA |url=https://www.wmata.com/about/news/METRO-SERVICE-FURTHER-REDUCED-TO-SUPPORT-ESSENTIAL-TRIPS-ONLY.cfm |website=www.wmata.com |access-date=31 January 2021}}{{cite web |title=Weekend: Metro service limited to 26 bus routes, reduced rail service; expect wait times of 30 minutes; customers urged to travel only if essential {{!}} WMATA |url=https://www.wmata.com/about/news/Weekend-service-3-28-3-29.cfm |website=www.wmata.com |access-date=11 February 2021}} Route R1 was brought back to service on August 23, 2020 while route R2 resumed its regular schedule on the same day.{{cite web |title=Metrobus Service Changes beginning August 23 {{!}} WMATA |url=https://www.wmata.com/service/status/details/proposed-august-2020-metrobus-service-changes.cfm |website=www.wmata.com |access-date=31 January 2021}}

As part of WMATA's Better Bus Redesign beginning on June 29, 2025, the line was changed. Route R1 was renamed into the P15 and rerouted to serve the Lewisdale neighborhood, with the rest of the routing remaining the same. Route R2 was renamed into the P16 and was rerouted to not serve Cherry Hill Road, and instead have bidirectional service along Calverton Boulevard.{{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}}

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