{{Short description|Daily bus route in Washington, D.C. area}} {{Use mdy dates|date=February 2025}} {{Infobox bus line |box_width = 250px |number = M12 |logo = <!-- bus logo (ex: Image_name.png) --> |logo_width =<!-- width of bus logo --> |logo_alt = <!-- logo image alternate text (only works if logo_width is supplied) --> |bgcolor = <!-- background color for infobox title (hex codes need a '#', i.e. #00ff33 not 00ff33) --> |titlecolor = <!-- color of the title text (hex codes need a '#') --> |subheader = University Boulevard Line |operatorlogo = Metrobus Logo 2025.svg |oplogo_width = 175px |image = WMATA 7262 M12.jpg |image_width = 250px |image_alt = |caption = Route M12 at Takoma Langley Crossroads Transit Center |system = Metrobus |operator = Washington Metropolitan Area Transit Authority |garage = Montgomery |livery = Local |pvr = |status = In Service |open = C2: 1973<br>C4: 1990<br>M12: June 29, 2025 |close = C2 & C4: June 28, 2025 |predecessors = |night = |locale = Prince George's County, Montgomery County |communities = Twinbrook, Rockville, Wheaton, Silver Spring, Takoma Park, Four Corners, Langley Park, Lewisdale, Hyattsville |landmarks = Hyattsville Crossing station, The Mall at Prince George's, Takoma Langley Crossroads Transit Center, Montgomery Blair High School, Four Corners, Northwood High School, Wheaton station, Westfield Wheaton, Twinbrook station |termini = <!-- used when route starts and stops at a single location, overrides the start and end parameters --> |start = Hyattsville Crossing station |via = East-West Highway, Riggs Road, University Boulevard, Veirs Mill Road, Randolph Road |end = Twinbrook station |length = |otherroutes = |compete = |ibus = |level = Daily |level1 = |frequency = 6-30 minutes (varies based on time of day) |time = |day = 4:00 AM - 2:00 AM (Monday - Friday)<br>5:00 AM - 2:00 AM (Saturday - Sunday) |zone = |timetable_link= |ridership = 1,442,559 (C2, FY 2025)<ref name=ridership>{{cite web | title=Metrobus FY2025 Annual Line Performance Report | website=wmata.com | url=https://www.wmata.com/about/records/upload/ALPR-FY2025_DRAFT_20260107.pdf | access-date=May 9, 2026}}</ref><br/>2,186,885 (C4, FY 2025)<ref name=ridership/> |transfers = SmarTrip, Contactless Bank Cards |map_link = |map = |map_state = |map_name = |previous_line = F85 |next_line = M20 |notes = }} The '''University Boulevard Line''', designated '''Route M12''', is a daily bus route operated by the Washington Metropolitan Area Transit Authority between Hyattsville Crossing station of the Green and Yellow Lines and Twinbrook station of the Red Line of the Washington Metro. The line operates every 6 – 24 minutes during peak hours, every 12-24 minutes during weekday off-peak and weekend daytime, and every 20-30 minutes during late night. Trips take roughly 70 minutes. Every other trip on the M12 operates between Takoma Langley Crossroads Transit Center and Wheaton station of the Red Line of the Washington Metro which takes roughly 30 minutes. The line connects northern Prince George's County to Montgomery County via the University Boulevard East/West (MD 193) corridor.

==Background== <!--| colspan="5" style="text-align:center;"|'''Notes''':--> Route M12 mostly provides service along University Boulevard operating between Montgomery County and Prince George's County via Takoma Park connecting riders between the two. The route operates out of Montgomery division.

===Stops=== <section begin=M12-table/> {| class="wikitable collapsible collapsed" style="font-size: 95%;" |- !Bus stop !Direction !Connections |- !colspan="5"|Montgomery County, Maryland |- !Twinbrook station<br /><small>Bus Bay A</small> |Westbound terminal,<br />Eastbound station |{{bus icon}} '''Ride On''': 5, 26, 44, 45, 46<br>{{rint|rail|size=12}} '''Washington Metro''': {{WMATA icon|Red}} |- !Parklawn Drive / FDA |Bidirectional | |- !Parklawn Drive / Wilkins Avenue |Bidirectional | |- !Parklawn Drive / Wilkins Avenue |Bidirectional | |- !Parklawn Drive / Braxfield Court |Bidirectional | |- !Randolph Road / Putnam Road |Eastbound |{{bus icon}} '''Metrobus''': M42, M44 |- !Randolph Road / Lauderdale Drive |Westbound |{{bus icon}} '''Metrobus''': M42, M44 |- !Randolph Road / Hunters Lane |Bidirectional |{{bus icon}} '''Metrobus''': M42, M44 |- !Randolph Road / Rockinghorse Road |Eastbound |{{bus icon}} '''Metrobus''': M42, M44 |- !Randolph Road / Gaynor Drive |Westbound |{{bus icon}} '''Metrobus''': M42, M44 |- !Randolph Road / Dewey Road |Bidirectional |{{bus icon}} '''Metrobus''': M42, M44 |- !Randolph Road / Charles Road |Bidirectional |{{bus icon}} '''Metrobus''': M42, M44 |- !Randolph Road / Bennion Road |Eastbound |{{bus icon}} '''Metrobus''': M42, M44 |- !Randolph Road / Selfridge Drive |Westbound |{{bus icon}} '''Metrobus''': M42, M44 |- !Veirs Mill Road / Bushey Drive |Bidirectional |{{bus icon}} '''Ride On''': 40, 48 |- !Veirs Mill Road / Ferrara Avenue |Bidirectional |{{bus icon}} '''Ride On''': 38, 40, 48 |- !Veirs Mill Road / Connecticut Avenue |Bidirectional |{{bus icon}} '''Ride On''': 38, 40, 41, 48 |- !Veirs Mill Road / Andrew Street |Westbound |{{bus icon}} '''Ride On''': 38, 40, 48 |- !Veirs Mill Road / Centerhill Street |Eastbound |{{bus icon}} '''Ride On''': 38, 40, 48 |- !Veirs Mill Road / Gail Street |Eastbound |{{bus icon}} '''Ride On''': 38, 40, 48 |- !Veirs Mill Road / Claridge Road |Bidirectional |{{bus icon}} '''Ride On''': 33, 38, 40, 48 |- !Veirs Mill Road / Pendleton Drive |Bidirectional |{{bus icon}} '''Ride On''': 33, 38, 40, 48 |- !Veirs Mill Road / Newport Mill Road |Bidirectional |{{bus icon}} '''Ride On''': 33, 38, 40, 48 |- !Veirs Mill Road / Norris Drive |Bidirectional |{{bus icon}} '''Ride On''': 33, 38, 40, 48 |- !Veirs Mill Road / College View Drive |Eastbound |{{bus icon}} '''Ride On''': 38, 40, 48 |- !Veirs Mill Road / Galt Avenue |Westboound |{{bus icon}} '''Ride On''': 38, 40, 48 |- !Veirs Mill Road / University Boulevard |Bidirectional |{{bus icon}} '''Ride On''': 34, 38, 40, 48 |- !Wheaton station<br /><small>Bus Bays B & D</small> |Bidirectional |{{bus icon}} '''Ride On''': 4, 7, 8, 9, 31, 34, 37, 38, 40, 41, 48<br>{{bus icon}} '''Metrobus''': M20, M22<br>{{rint|rail|size=12}} '''Washington Metro''': {{WMATA icon|Red}} |- !Veirs Mill Road / University Boulevard |Bidirectional |{{bus icon}} '''Metrobus''': M20, M22<br>{{bus icon}} '''Ride On''': 8, 9, 34, 38, 40, 48 |- !Reedie Drive / Fern Street |Westbound |{{bus icon}} '''Ride On''': 7, 8, 9, 31 |- !University Boulevard / Fern Street |Eastbound |{{bus icon}} '''Ride On''': 7, 8 |- !Amherst Avenue / University Boulevard |Westbound |{{bus icon}} '''Ride On''': 7, 8, 9, 31 |- !University Boulevard / Westchester Drive |Bidirectional |{{bus icon}} '''Ride On''': 7, 8 |- !University Boulevard / Reedie Drive |Bidirectional |{{bus icon}} '''Ride On''': 7, 8 |- !University Boulevard / Eastcrest Drive |Bidirectional |{{bus icon}} '''Ride On''': 7, 8 |- !University Boulevard / Inwood Avenue |Bidirectional |{{bus icon}} '''Ride On''': 7, 8 |- !University Boulevard / Sligo Creek Parkway |Bidirectional |{{bus icon}} '''Ride On''': 8 |- !University Boulevard / Warwick Towers |Westbound |{{bus icon}} '''Ride On''': 8 |- !University Boulevard / Gabel Street |Eastbound |{{bus icon}} '''Ride On''': 8, 9 |- !University Boulevard / Northwood High School |Westbound |{{bus icon}} '''Ride On''': 8, 9 |- !University Boulevard / Orange Drive |Eastbound |{{bus icon}} '''Ride On''': 9 |- !University Boulevard / Eisner Street |Westbound |{{bus icon}} '''Ride On''': 9 |- !University Boulevard / Dennis Avenue |Bidirectional |{{bus icon}} '''Ride On''': 9, 19 (Westbound only) |- !University Boulevard / Royalton Road |Bidirectional |{{bus icon}} '''Ride On''': 9, 19 |- !University Boulevard / Burnett Avenue |Bidirectional |{{bus icon}} '''Ride On''': 9, 19 |- !University Boulevard / Sutherland Road |Westbound |{{bus icon}} '''Metrobus''': M52, M54<br>{{bus icon}} '''Ride On''': 9, 19, 21, 22, Flash BRT (Blue, Orange) |- !University Boulevard / Colesville Road |Bidirectional |{{bus icon}} '''Metrobus''': M52, M54<br>{{bus icon}} '''Ride On''': 9, 19, 21, 22, Flash BRT (Blue, Orange) |- !University Boulevard / Lexington Drive |Bidirectional |{{bus icon}} '''Ride On''': 19 |- !University Boulevard / Williamsburg Drive |Bidirectional |{{bus icon}} '''Ride On''': 19 |- !University Boulevard / East Franklin Drive |Bidirectional |{{bus icon}} '''Ride On''': 14 |- !University Boulevard / East Melbourne Drive |Bidirectional |{{bus icon}} '''Ride On''': 14 |- !University Boulevard / East Wayne Avenue |Eastbound |{{bus icon}} '''Ride On''': 14 |- !University Boulevard / Buckingham Drive |Westbound |{{bus icon}} '''Ride On''': 14 |- !University Boulevard / Langley Drive |Eastbound |{{bus icon}} '''Ride On''': 14 |- !University Boulevard / Patton Drive |Westbound |{{bus icon}} '''Ride On''': 14 |- !University Boulevard / Piney Branch Road |Bidirectional |{{bus icon}} '''Ride On''': 15, 16, 20, 24<br>{{rint|rail|size=12}} MTA: Purple Line (at Piney Branch Road station) (Planned) |- !University Boulevard / Seek Lane |Bidirectional |{{bus icon}} '''Ride On''': 15 |- !University Boulevard / Forston Street |Eastbound |{{bus icon}} '''Ride On''': 15 |- !University Boulevard / Carroll Avenue |Westbound |{{bus icon}} '''Ride On''': 15 |- !University Boulevard / Merrimac Drive |Eastbound |{{bus icon}} '''Ride On''': 15 |- !University Boulevard / Navahoe Drive |Westbound |{{bus icon}} '''Ride On''': 15 |- !colspan="5"|Prince George's County, Maryland |- !Takoma Langley Crossroads Transit Center<br /><small>Bus Bays A & D</small> |Bidirectional |{{bus icon}} '''Metrobus''': M60, M6X, P31<br>{{bus icon}} '''Ride On''': 15, 16, 17, 18, 25<br> {{bus icon}} '''TheBus''': P43<br>{{bus icon}} '''Shuttle-UM''': 129<br>{{rint|rail|size=12}} MTA: Purple Line (Planned) |- !University Boulevard / 14th Avenue |Bidirectional |{{bus icon}} '''Metrobus''': P31<br>{{bus icon}} '''TheBus''': P43 |- !University Boulevard / 15th Avenue |Bidirectional |{{bus icon}} '''Metrobus''': P15, P16, P31<br>{{bus icon}} '''TheBus''': P43<br>{{rint|rail|size=12}} MTA: Purple Line (at Riggs Road station) (Planned) |- !Riggs Road / University Boulevard |Eastbound |{{bus icon}} '''Metrobus''': P15, P16, P31<br> {{bus icon}} '''TheBus''': P43<br>{{rint|rail|size=12}} MTA: Purple Line (at Riggs Road station) (Planned) |- !Riggs Road / Drexel Street |Bidirectional | |- !Riggs Road / Drexel Street |Bidirectional | |- !Riggs Road / Riggs Road Court |Eastbound | |- !Riggs Road / Beechwood Drive |Westbound | |- !Riggs Road / Avalon Place |Eastbound | |- !Riggs Road / Amherst Road |Westbound | |- !East-West Highway / 19th Place |Bidirectional |{{bus icon}} '''Metrobus''': P15, P16, P30, P35 |- !East-West Highway / Ager Road |Bidirectional |{{bus icon}} '''Metrobus''': P15, P16, P30, P35 |- !East-West Highway / 23rd Avenue |Bidirectional |{{bus icon}} '''Metrobus''': P15, P16, P30, P35<br>{{bus icon}} '''TheBus''': P43 |- !Toledo Terrace / East-West Highway |Bidirectional |{{bus icon}} '''Metrobus''': P30, P32, P35<br>{{bus icon}} '''TheBus''': P43 |- !Toledo Terrace / Toledo Place |Bidirectional | |- !Toledo Terrace / The Seville |Bidirectional |{{bus icon}} '''Metrobus''': P33 |- !Toledo Terrace / Belcrest Road |Bidirectional |{{bus icon}} '''Metrobus''': P33 |- !Belcrest Road / Toledo Road |Bidirectional |{{bus icon}} '''Metrobus''': P32, P33<br>{{bus icon}} '''Shuttle-UM''': 113 |- !Belcrest Road / Freedom Way |Eastbound |{{bus icon}} '''Metrobus''': M44, P10, P32, P33<br>{{bus icon}} '''Shuttle-UM''': 113 |- !Belcrest Road / #6505 |Westbound |{{bus icon}} '''Metrobus''': M44, P10, P32, P33<br>{{bus icon}} '''Shuttle-UM''': 113 |- !Belcrest Road / East-West Highway |Eastbound |{{bus icon}} '''Metrobus''': M44, P10, P32, P33<br>{{bus icon}} '''Shuttle-UM''': 113 |- !Hyattsville Crossing station<br /><small>Bus Bay A</small> |Westbound station,<br />Eastbound terminal |{{bus icon}} '''Metrobus''': M44, P10, P30, P32, P33, P35<br> {{bus icon}} '''TheBus''': P43<br> {{bus icon}} '''Shuttle-UM''': 113<br>{{rint|rail|size=12}} '''Washington Metro''': {{WMATA icon|Green}} {{WMATA icon|Yellow}} |- <!--| colspan="5" style="text-align:center;"|'''Notes''':--> |}<section end=M12-table/>

==History== ===20th century=== C2 was created as a new route on February 4, 1973, to replace the segment of the former J8 streetcar line between Wheaton Plaza & Montgomery Mall when the J8 became a Metrobus Route and was truncated to only operate between the Wheaton Plaza & Beltway Plaza.<ref name=":0">{{Cite news|url=https://www.wmata.com/about/upload/History-090418.pdf|title=Metro History|date=March 5, 2010|work=WMATA|access-date=May 15, 2019|archive-date=April 26, 2019|archive-url=https://web.archive.org/web/20190426224041/https://www.wmata.com/about/upload/History-090418.pdf|url-status=dead}}</ref><ref name=":1">{{Cite news|url=https://www.greenbeltnewsreview.com/issues/GNR19770922.pdf|title=Metro Service Better, Bus Rerouting Planned|last=Jones|first=Mike|date=September 29, 1977|work=Greenbelt News Review|access-date=May 15, 2019}}</ref><ref name=":2">{{Cite web|url=https://www.chicagorailfan.com/wasdated.html|title=WASHINGTON DC TRANSIT ROUTES|website=www.chicagorailfan.com|access-date=2019-05-16|archive-date=2019-11-04|archive-url=https://web.archive.org/web/20191104040543/https://www.chicagorailfan.com/wasdated.html|url-status=dead}}</ref> Routes C2 & J8 operated as part of the "Beltway Plaza–Montgomery Mall Line" until February 19, 1978.<ref name=":3">{{Cite news|url=https://www.greenbeltnewsreview.com/issues/GNR19780119.pdf|title=Bus Route Changes to Affect Greenbelt|last=Likowaki|first=Barbara|date=January 19, 1978|work=Greenbelt News Review|access-date=May 15, 2019}}</ref> when they were both merged into route C2. Route C2 operated between Montgomery Mall & Beltway Plaza, via Prince George's Plaza Mall & University of Maryland, College Park.<ref name=":1" /><ref name=":2" /><ref name=":3" />

Route C4 was originally designated as the Randolph Road Line. It operated between White Oak and Montgomery College until September 6, 1981, when it was replaced by extended Metrobus route Z4.

On January 27, 1985, route C2 was rerouted to terminate at the newly opened Twinbrook station, discontinuing service to Montgomery Mall. The portion of the route between Wheaton station and Montgomery Mall would be replaced by Ride On route 35. As a result of this change, the line would be renamed the "Beltway Plaza-Twinbrook Line".

On September 22, 1990, route C2 was truncated to only operate up to Wheaton station. The C4 would begin revenue service at the same time, operating between Langley Park and Twinbrook station. Route C2 would now only operate between Wheaton station and Beltway Plaza.<ref name=":0" />

On December 11, 1993, route C2 was extended from Beltway Plaza Mall to Greenbelt Center via Greenbelt station when the Green Line northern portion was opened replacing route F6 service between University Of Maryland and Beltway Plaza which was rerouted to serve New Carrollton station along with route F4. But Route C2 will discontinue service via Prince Georges Plaza, and would operate through the University Of Maryland operating on a direct route along Campus Drive.<ref name=":5"/>

Route C4 was extended from Langley Park to Prince George's Plaza (now {{wmata|Hyattsville Crossing}}) station, along route C2's original routing from intersection of University Boulevard East in Langley Park & the Prince George's Plaza Mall, via Riggs Road, and East West Highway.<ref name=":5">{{Cite news|url=https://www.washingtonpost.com/archive/local/1993/12/09/metro-shuffling-its-bus-schedule/29c11358-4cae-44aa-91f7-d1b863257131/|title=Metro Shuffling Its Bus Schedule|last=Pierre|first=Robert|date=December 9, 1993|newspaper=Washington Post|access-date=May 15, 2019}}</ref> The line was renamed as the "Greenbelt-Twinbrook Line" as result of these changes.<ref name=":4">{{Cite news|url=https://www.washingtonpost.com/archive/local/1984/08/24/metro-plans-to-revise-dc-montgomery-bus-routes-for-red-line/6c55284f-11d2-4f73-9bb2-faaac310fdd5/?noredirect=on|title=Metro Plans to Revise D.C., Montgomery Bus Routes for Red Line|last=Lynton|first=Stephen|date=May 15, 2019}}</ref>

===21st century=== {{multiple image | align = right | direction = vertical | width = 250 | image1 = WMATA New Flyer XDE40 7373 on Route C2.jpg | image2 = WMATA New Flyer DE40LF 6019 on Route C4.jpg | footer = Former Routes C2 and C4 }}

On January 13, 2001, route C4 was rerouted along Toledo Terrace and Belcrest Road to serve the apartment complexes behind The Mall at Prince Georges. The line would serve the mall bus bays from Belcrest Road.<ref>{{cite web |url=http://wmata.com/metrobus/servicechange_011301_md.htm |title=Metrobus service changes effective January 13, 2001 Maryland |date=February 10, 2001 |accessdate=June 15, 2020 |archive-url=https://web.archive.org/web/20010210013516/http://wmata.com/metrobus/servicechange_011301_md.htm |archive-date=February 10, 2001 |url-status=dead }}</ref>

On May 15, 2003, the original bus bays inside Prince Georges Plaza mall, were demolished in order to build a new Target store. Routes C4 along with routes 86, F4, F6, F8, R2, R3, R4 and TheBus 13, 14, 18 have stopped entering and looping inside around the mall.<ref>{{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=Gazette.net|accessdate=26 February 2020 |archive-url=https://web.archive.org/web/20190329001034/http://www.gazette.net/gazette_archive/2003/200320/hyattsville/news/158762-1.html |archive-date=29 March 2019 |url-status=dead }}</ref>

In 2010, WMATA proposed to completely discontinue the C4 and to replace it with the C8 and J5.<ref>{{cite web|url=https://www.wmata.com/about/public-hearings/upload/bus_md.pdf |title=Public hearing |website=www.wmata.com }}</ref> Under the proposal, the J5 would discontinue service along the Capital Beltway and Grosvenor–Strathmore station and will serve the former C4 stops via Parklawn Drive, Randolph Road, Veirs Mill Road, Wheaton Station, and Georgia Avenue. Service to Prince George's Plaza station would be provided by the C8 which was proposed to discontinue service to College Park–University of Maryland station and University of Maryland. However a major problem in the proposal was the C8 was proposed to only operate on Weekday Peak Hour services only while the J5 only operated during Peak Hours. With the discontinuation of the C4 and the changes made on the C8 and J5, it would not only lose direct service from Prince George's Plaza to Twinbrook, it would also mean residents would have a lack of bus service where the C4 operated since the C8 and J5 would only operate during rush hours only.

Route C2 was also proposed to be shorten to Greenbelt station discontinuing service to Greenbelt Center being replaced by a new route T12, T14, and existing T16 or routes G12, G14, and G16 eliminating service between Greenbelt station and Greenbelt Center. This was a result of Greenbelt bus service lacking much service and the city of Greenbelt wanting to restructure the lines.<ref>{{cite web |last1=Johnson |first1=Matt |title=WMATA proposes restructuring Greenbelt bus service |url=https://ggwash.org/view/4742/wmata-proposes-restructuring-greenbelt-bus-service |accessdate=14 March 2020}}</ref><ref>{{cite web |last1=Johnson |first1=Matt |title=Metro Board will take up Greenbelt restructuring |url=https://ggwash.org/view/6591/metro-board-will-take-up-greenbelt-restructuring |accessdate=14 March 2020}}</ref><ref>{{cite web |url=https://www.flickr.com/photos/39017545@N02/5032062836/ |title=Proposed Greenbelt Bus Changes |website=Flickr |date=September 27, 2010 |access-date=April 14, 2020 |author=Matt' Johnson }}</ref><ref>{{cite web |title=Proposed Metrobus and The Bus Service For Greenbelt |url=https://ggwash.org/files/2010-busgreenbelt.pdf}}</ref>

On December 19, 2010, route C2 was truncated from the Greenbelt Center to only operate up to Greenbelt station at the request of the city of Greenbelt. Service between Greenbelt station and Greenbelt Center being replaced by new routes G13, G14, and G16, in order to simplify Greenbelt bus service as much as possible with other routes and as a method of circumventing the transportation budget shortfall in Prince George's County.<ref name="PublicHearing">{{cite web|url=https://www.wmata.com/about/public-hearings/upload/bus_md.pdf|title=Public hearing|website=www.wmata.com}}</ref> Route C2 also discontinue the Beltway Plaza Loop as well being replaced by routes G14 and G16.<ref>{{cite web |title=Greenbelt News Review Vol. 74, No. 3 |url=https://www.slideshare.net/ChiquittaBazemore/newspaper-article-6110507 |accessdate=10 May 2020 |date=10 December 2010}}</ref><ref>{{cite web |title=Maryland to get enhanced Metrobus service |url=https://www.wmata.com/about/news/pressreleasedetail.cfm?ReleaseID=4764 |website=WMATA |accessdate=14 April 2020|archive-url=https://web.archive.org/web/20190109110747/https://www.wmata.com/about/news/pressreleasedetail.cfm?ReleaseID=4764|archive-date=January 9, 2019|url-status=dead}}</ref><ref>{{cite web |last1=Johnson |first1=Matt |title=Greenbelt advocates educate bus riders on changes |url=https://ggwash.org/view/7642/greenbelt-advocates-educate-bus-riders-on-changes |website=Greater Greater Washington |accessdate=15 April 2020 |language=en}}</ref>

In 2015, WMATA proposed to split the C2 and C4 into two separate routes. Route C2 would operate between Greenbelt station and the upcoming Takoma Langley Crossroads Transit Center while route C4 would keep its current routing but have every other trip end at Wheaton station. Sunday service would also be added to route C2 in order to replace route 81 which was proposed to be eliminated. The changes were due to the demand for bus service is the lowest on the section of the line between Langley Park and Greenbelt station and it would be easier to manage service on University Boulevard with only one route instead of having overlapping service.<ref>{{cite web |title=C2,C4 Greenbelt-Twinbrook |url=https://www.wmata.com/about/public-hearings/upload/MD-PDF-Maps-Translations.pdf |accessdate=9 August 2020}}</ref>

On March 27, 2016, new Sunday Service was added to the C2 operating between Greenbelt station and Langley Park only replacing route 81 service.<ref>{{cite press release |url=https://www.wmata.com/about/news/pressreleasedetail.cfm?ReleaseID=6088 |title=Metro News Release |date=March 25, 2016 |website=WMATA |access-date=August 18, 2019}}</ref><ref>{{cite web |title=Bus Service Is Improving for Greenbelt residents, including new Sunday service and more |url=https://planitmetro.com/2016/03/22/march-service-change-brings-greenbelt-residents-sunday-service-and-more/ |website=PlanItMetro |accessdate=3 May 2020}}</ref>

When the Takoma Langley Crossroads Transit Center opened on December 22, 2016, the C2 and C4 were rerouted, along with several other Metrobus, Ride On buses, Shuttle UM and TheBus routes, to serve the newly opened Transit Center. Routes C2 and C4 would serve Bus Bay A (Westbound) and Bus Bay D (Eastbound).<ref>{{cite web |title=Metrobus service changes effective December 18 include more late-night service {{!}} WMATA |url=https://www.wmata.com/about/news/20161216_Dec_Metrobus_Service_Changes.cfm |website=www.wmata.com |accessdate=9 August 2020}}</ref><ref>{{cite web |title=Takoma Langley Crossroads Transit Center, December 22 {{!}} WMATA |url=https://www.wmata.com/service/status/details/takoma-langley-crossroads-transit-center.cfm |website=www.wmata.com |accessdate=9 August 2020}}</ref><ref>{{cite web |last1=Rowl |first1=DW |title=Langley Park's new transit center opened on Thursday! |url=https://ggwash.org/view/61763/takoma-langley-transit-center-is-opening-thursday |website=Greater Greater Washington |accessdate=9 August 2020 |language=en}}</ref>

On December 17, 2017, Eastbound buses that departed Wheaton station were rerouted operate via Veirs Mill Road to access University Boulevard due to the closure of Reedie Drive. Eastbound service on Reedie Drive and Amherst Avenue will be eliminated.<ref>{{cite web |title=Metrobus Service Changes, December 17 {{!}} WMATA |url=https://www.wmata.com/service/status/details/metrobus-service-changes-december17.cfm |website=www.wmata.com |access-date=23 December 2020}}</ref>

During the COVID-19 pandemic, routes C2 and C4 began operating on its Saturday supplemental schedule beginning on March 16, 2020.<ref>{{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}}</ref> However beginning on March 18, 2020, the route was further reduced to operate on its Sunday schedule during the weekdays with route C2 operating between Takoma Langley Crossroads and Greenbelt only having no service to Wheaton.<ref>{{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}}</ref> Also, beginning on March 21, 2020, route C2 was suspended on the weekends while route C4 operating every 30 minutes on its full route.<ref>{{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=31 January 2021}}</ref> Regular weekday and weekend service resumed beginning on August 23, 2020.<ref>{{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}}</ref>

On September 5, 2021, the line was increased to operate every 12 minutes between both routes between 7:00 am and 9:00 pm daily.<ref>{{cite web |title=Improved frequency and changes to Metrobus service begin Sunday, Sept. 5, 2021 {{!}} WMATA |url=https://www.wmata.com/service/status/details/metrobus-service-changes-september-2021.cfm |website=www.wmata.com |access-date=24 August 2021}}</ref>

===Better Bus Redesign=== [[File:WMATA 4778 P32.jpg|thumb|right|250px|Route P32 took over parts of the former Route C2 as the Greenbelt–Fort Totten Line.]] In 2022, WMATA launched its Better Bus Redesign project, which aimed to redesign the entire Metrobus Network and is the first full redesign of the agency's bus network in its history.

In April 2023, WMATA launched its Draft Visionary Network. As part of the drafts, WMATA proposed to split the C2 and C4 into two separate routes.<ref>{{cite web |title=Draft Visionary Maryland Routes |url=https://www.wmata.com/initiatives/plans/Better-Bus/upload/DraftVisionaryRouteProfiles041723-EN_MD.pdf |access-date=29 July 2025}}</ref>

The C2 portion between Greenbelt station and Takoma Langley Crossroads Transit Center was broken up into three different routes. The portion between Greenbelt station and the beginning of University Boulevard East was named Route MD246 and was extended to West Hyattsville station via Meterzott Road, New Hampshire Avenue, University Boulevard, 23rd Avenue, and Ager Road, partially reincorporating the former Route R3. The portion between the University of Maryland and Takoma Langley Crossroads Transit Center was named Route MD247 and was routed to serve New Carrollton station via Baltimore Avenue, Queensbury Road, Riverdale Road, and Veterans Parkway. The portion between Greenbelt station and the University of Maryland (the intersection of Baltimore Avenue and Campus Drive) was combined with the 83 and 86 and was named Route MD249, operating between Rhode Island Avenue station and Greenbelt station via Baltimore Avenue.

The C4 was to operate on its current routing between Hyattsville Crossing station and the intersection of Randolph Road and Parklawn Drive, but was rerouted to serve North Bethesda station instead of Twinbrook station via Parklawn Drive and Nicholson Lane and was named Route MD143. During the late nights when Metrorail is closed, Route MD143 would be extended to New Carrollton station via East-West Highway and Riverdale Road.

During WMATA's Revised Draft Visionary Network, WMATA renamed the MD246 to the P36, the MD247 to the P31, the MD249 to the P1X, and the MD143 to the M12, keeping their same routings. The nighttime extension to New Carrollton station for the proposed Route MD143 was not included in the proposal.<ref>{{cite web |title=Revised Visionary Network Route Summary |url=https://www.wmata.com/initiatives/plans/Better-Bus/upload/BBNR_Phase-2-Comment-Response-Summary-2.pdf |access-date=29 July 2025}}</ref>

By the time the Proposed 2025 Network was released, WMATA dropped the P36 entirely and modified the P31 route. The new P31 still operated between Takoma Langley and New Carrollton, but no longer operated along Baltimore Avenue, Queensbury Road, or Veterans Parkway and instead would continue along Campus Drive to serve College Park–University of Maryland station, then operate along Campus Drive, Kenilworth Avenue, Riverdale Road, Finns Lane, Harkins Road, and Ellins Road to New Carrollton station, partially operating on the former Route F6 routing. The proposed M12 and P1X kept its current proposals.<ref>{{cite web |title=Proposed 2025 Network Maryland Routes |url=https://www.wmata.com/initiatives/plans/Better-Bus/upload/EN-MD-Route-Profiles-05-07-24.pdf |access-date=29 July 2025}}</ref>

During the proposals, more changes were made. The proposed P1X was instead rerouted to serve IKEA Way in Beltsville. The proposed P32 was instead rerouted from its proposed College Park–University of Maryland station terminus to serve Greenbelt station via Baltimore Avenue, Greenbelt Road, Cherrywood Lane, and Greenbelt Metro Drive. The new P32 would operate between Fort Totten station and Greenbelt station via Sargent Road, Chillum Road, West Hyattsville station, Ager Road, East-West Highway, Hyattsville Crossing station, Belcrest Road, Toledo Road, Adelphi Road, University Boulevard, Stadium Drive, and Campus Drive before operating on the proposed routing to Greenbelt station. Service to College Park station was instead replaced by the proposed P31 while service in Riggs Park was replaced by the proposed C71.

Meanwhile, Route M12 had its western terminus switched back to Twinbrook station with service to North Bethesda station replaced by proposed Routes M42 and M44.<ref>{{cite web |title=Maryland Better Bus Routes |url=https://www.wmata.com/initiatives/plans/Better-Bus/upload/Resource_2025-Route-Profiles_Maryland.pdf }}{{Dead link|date=December 2025 |bot=InternetArchiveBot }}</ref>

On November 21, 2024, WMATA approved its Better Bus Redesign Network, with service on the University Boulevard Line being simplified.<ref>{{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}}</ref>

Beginning on June 29, 2025, Route C4 was renamed to the M12 and kept its same routing, with every other trip operating between Wheaton station and Takoma Langley Crossroads only. Route C2 was combined with the F6, operating between Greenbelt and the University of Maryland, then rerouted to serve Fort Totten station via Adelphi Road, Hyattsville Crossing station, Ager Road, West Hyattsville station, and Chillum Road, being renamed to the P32. Service between Takoma Langley and the University of Maryland was replaced by Route P31, which was a modified Route F6.<ref>{{cite web |title=Maryland Route Profiles |url=https://www.wmata.com/initiatives/plans/Better-Bus/upload/MD_Routes_042525.pdf |access-date=29 July 2025}}</ref>

==Incidents== * On September 30, 2010, a C4 bus rear ended a C2 bus along University Boulevard. 26 people were injured in the collision.<ref>{{cite web |title=Metro bus accident occurs on University Boulevard {{!}} Silver Chips |url=https://silverchips.mbhs.edu/content/metro-bus-accident-occurs-on-university-boulevard-27705/ |website=silverchips.mbhs.edu |accessdate=30 May 2020}}</ref><ref>{{cite web |title=Two Metrobuses collide in Silver Spring |url=http://voices.washingtonpost.com/local-breaking-news/traffic-and-transportation/two-metro-buses-collide-in-sil.html |archive-url=https://web.archive.org/web/20130223140934/http://voices.washingtonpost.com/local-breaking-news/traffic-and-transportation/two-metro-buses-collide-in-sil.html |url-status=dead |archive-date=February 23, 2013 |accessdate=30 May 2020}}</ref><ref>{{cite web |title=Post Now - Two Metrobuses collide in Silver Spring |url=https://www.justicenewsflash.com/2010/10/02/26-injured-when-2-metro-buses-collide_201010025674.html |accessdate=30 May 2020}}</ref> * On April 17, 2023, 28-year-old Monte Cunningham was stabbed and killed while getting off a C2 bus at University Boulevard West and Amherst Avenue in Wheaton, Maryland. According to reports, Cunningham and another passenger got into an argument before both got off the bus, and the suspect stabbed Cunningham.<ref>{{cite web |last1=Bensen |first1=Jackie |title=Metrobus Rider Stabbed, Killed in Wheaton After Angry Exchange On Board |url=https://www.nbcwashington.com/news/local/metrobus-rider-stabbed-killed-in-wheaton-after-angry-exchange-on-board/3323943/ |website=NBC4 Washington |access-date=13 April 2025 |date=5 April 2023}}</ref><ref>{{cite web |last1=Ward |first1=Derrick |title=Family Mourns Man Killed in Wheaton Bus Stop Stabbing |url=https://www.nbcwashington.com/news/local/family-mourns-man-killed-in-wheaton-bus-stop-stabbing/3324480/ |website=NBC4 Washington |access-date=13 April 2025 |date=6 April 2023}}</ref> On April 17, 2023, the Montgomery County Police arrested 34-year-old Tyrone Curtis in connection to the stabbing and charged him with first-degree murder.<ref>{{cite web |title=Arrest made in fatal stabbing after argument on Metrobus in Wheaton, police say |url=https://wjla.com/news/local/metro-crime-wheaton-metrobus-stabbing-arrest-suspect-victim-amontae-cunningham-rockville-verbal-fight-altercation-knife-bus-driver-injuries-hospital-fatal-montgomery-county-police-warrant-investigation-university-boulevard-maryland-wmata-transportation |website=WJLA |access-date=13 April 2025 |language=en |date=17 April 2023}}</ref> Curtis was later found guilty of first-degree murder on January 29, 2024.<ref>{{cite web |last1=Cohn |first1=Courtney |title=Washington, D.C., man convicted for fatal stabbing in Wheaton |url=https://bethesdamagazine.com/2024/01/29/washington-d-c-man-convicted-for-fatal-stabbing-in-wheaton/ |website=Bethesda Magazine |access-date=13 April 2025 |date=29 January 2024}}</ref>

== References == {{Commons category|Greenbelt–Twinbrook Line}} <references /> M12 Category:Transportation in Montgomery County, Maryland Category:Transportation in Prince George's County, Maryland