The WMATA 1000 Series was one of the few contracts that Rohr received while in the railcar construction business. The 300 Rohr cars were the original cars for the Metrorail system and entered service in 1976 when the system opened. They received a general overhaul in the early 1990s, at which time AC traction motors were installed. The Rohrs were restricted to operating in the middle of train consists after the June 2009 Fort Totten crash, but this move appears to have been nothing but a public relations stunt over concerns about the structural integrity of the cars being stronger if they were not on the ends of the consists. The 1000 Series were gradually retired starting in the spring of 2016 as the Kawasaki 7000 Series cars arrived to replace them. The final 1000 Series cars were decommissioned on June 25, 2017. They were all sold for scrap with the exception of the 1000/1001 pair, which is being preserved by WMATA.