Eight of the previously recalled 7000-series Metro train cars were back on D.C. Metro tracks Thursday, according to the Washington Metropolitan Transit Authority.
The decision to return the 7000-series trains to regular service comes after a federal investigation into a Metro train derailment near Arlington National Cemetery in October 2021 found a wheel defect in some of the trains.
As a result, all 7000-series railcars were removed from service on all D.C, Metro lines, removing nearly 60% of Metro’s fleet.
During the past few months, the older 6000-series trains have picked up the slack; though riders have endured longer wait times due to the sheer lack of trains.