In March, 1995, the D6 Metrobus Route was rerouted to operate between Sibley Hospital & the Stadium Armory Metro Station, via the Union Station, instead of operating between Sibley Hospital & Washington Hospital Center, via the Union Station & Rhode Island Avenue Metro Station, in order to replace the segment of the former 40, 42, & 44 Metrobus Routes' routing between the Union Station & Stadium Armory Metro Station that was discontinued when both the 40 & 44 Metrobus Routes were discontinued, and the 42 Metrobus Route was truncated to operate only between Mount Pleasant & Metro Center, instead of operating all the way between Mount Pleasant & the Stadium Armory Metro Station, via the Union Station.