Initial reports suggest there is an arcing insulator somewhere in the tunnel between the Rosslyn and Foggy Bottom stations — a seemingly persistent problem that has not been resolved by Metro’s extensive SafeTrack maintenance catch-up program.
Since a woman died on a Yellow Line train that filled with smoke near the L’enfant Metro station in 2015, ACFD sends the cavalry — a full “transportation incident” response — every time there is a report of smoke in a tunnel or fire on the tracks.