Commuters on Metro's Red Line experienced delays Wednesday morning after a smoking insulator, a deer and a disabled train caused problems on three portions of the line.
As of 11:45 a.m., Metro said Red Line trains were running as scheduled.
Trains shared a track between the Grosvenor and Medical Center stations for about 30 minutes Wednesday morning after a track problem was reported outside Medical Center.
Firefighters responded to the scene for a report of a smoking insulator, Montgomery County Battalion Chief Steve Mann said on Twitter.
Normal service resumed about 5:45 a.m.
Near the same time, trains began single-tracking between the Takoma and Fort Totten stations. Metro officials said a deer was struck by a train outside the Fort Totten station.
At 6 a.m., a disabled train outside the Tenleytown station delayed service. Trains shared a track between the Friendship Heights and Van Ness stations for about 30 minutes. Normal service later resumed outside Tenleytown.
Riders were told to expect delays in both directions.