Detailed Information:
NOTE: Figures shown here for Metrorail ridership represent actual passenger entries and exits for the specific date. Metrobus ridership figures, on the other hand, are tabulated as averages for weekdays, Saturdays or Sundays over a 30-day period. Bus figures shown here represent the averages for the previous 30 days.
Unexpected Service Disruptions:
2:30 p.m. An inbound Green Line train at West Hyattsville was held to allow Metro personnel to search for a suspect.
3:46 p.m. Mount Vernon Square station was closed after an outbound Green Line train derailed as it was pulling into the station. Metro provided free shuttle bus service to nearby stations throughout the remainder of the day as emergency personnel responded to the scene and investigated the incident. Customers experienced major delays.
9:57 p.m. An outbound Blue Line train at Capitol Heights was taken out of service because of a door problem, and customers were required to exit the train. A following train was taken out of service and used to push the disabled train to the rail yard. Two trains shared one track around the area. An additional train was put in service. Customers experienced major delays.
Washington Metro's Mount Vernon Square station
Subway service in the United States capital city of Washington, D.C. was disrupted Sunday afternoon when a Washington Metro Green Line train derailed as it approached the
Mount Vernon Square station.

Sixteen passengers were reported hospitalised, but no critical injuries were reported. All passengers were evacuated from the trains less than an hour after the incident. The Mount Vernon Square station remained closed for the remainder of Sunday, with shuttle bus service bypassing the accident scene. Travel for Green and Yellow line passengers was delayed by 20 minutes during clean up and accident investigation. Normal service on Metrorail resumed on Monday.