In 1987, a
CSX train derailed near the
Takoma station, where the freight trains and Metro tracks run along the same corridor. The CSX train tore through a chain-link fence and onto the Metro tracks. One car penetrated the Metro power substation building adjacent to the tracks, causing significant damage. This accident led NTSB to recommend an intrusion detection warning system along this stretch of tracks. In 1989, an Orange Line train hit a car that had fallen onto the tracks from an
Interstate 66 overpass, though the train operator was able to apply the emergency brakes and slow the train to 5 mph at impact, resulting in no serious injuries for the 40 passengers. In a similar incident on February 11, 2026, a car fell onto the Orange Line tracks near
Dunn Loring station, this time from the westbound
HOT lanes on I-66, temporarily suspending rail service between West Falls Church and Vienna and shutting down the westbound HOT lanes where the car fell from. No trains were involved in the incident. On March 22, 2025, a piece of fencing fell from Washington Boulevard's overpass of I-66, disrupting Orange and Silver Line service between Ballston–MU and West Falls Church/McLean.
Train separations • On January 6, 2016, two 3000 Series cars on the Green Line separated from each other while on approach to Navy Yard station causing delays. • On December 12, 2016, two 7000 Series cars separated from each other while operating on the Red Line at Twinbrook station. • On August 27, 2018, cars 6038 and 6039 separated from each other while operating on the Silver Line between McLean and East Falls Church station. • On April 15, 2019, a non-revenue 3000 series train separated while it was being moved onto the Wiehle-Reston pocket tracks. • On October 9, 2020, cars 6075 and 6079 on a northbound Red Line train separated from each other between NoMa and Union station causing service to be suspended between Gallery Place and Rhode Island Avenue stations. There were no injuries but at least 100 passengers were stranded on the train. • On November 24, 2020, cars 6150 and 6177 on a southbound Red Line train pulled apart from each other while departing
Glenmont station causing service to be suspended between Glenmont and Forrest Glen stations. There were no injuries. Immediately after the incident, Metro pulled all 6000 series rail-cars from service for a pending investigation.
Near-collisions Metro has also experienced a number of incidents in which trains narrowly missed colliding. On June 7, 2005, a train operator in the tunnel beneath the
Potomac River, between the and stations, had a signal to proceed but noticed red lights ahead and engaged the emergency brakes. His train missed colliding with the one ahead of it by , and the train behind his missed colliding by . Another incident occurred in March 2009, near the
Potomac Avenue station, when one train missed colliding with another by after the Automatic Train Protection system failed.
Smoke incidents January 12, 2015 On January 12, 2015, during early evening rush, a Yellow Line train departing for began to fill with smoke. Everyone on board was evacuated; 84 people were taken to hospitals and one person died. The
National Transportation Safety Board released a statement saying "an electrical arcing event" sparked the incident. According to an
Associated Press story the next day, the last fatality on the metro system had been on
June 22, 2009. The report went on to state that electricity had arced from the
third rail to the track, and that the cause was still undetermined. One victim was known to be in critical condition. Questions were raised about the timeliness and adequacy of the emergency response by Metro and rescue personnel.
December 10, 2019 On December 10, 2019, smoke was reported from an arcing insulator along the Red Line near station, causing service to be suspended between and stations during the morning rush hour. A train was stuck in the smoke inside the tunnel at Tenleytown. Later in the afternoon rush hour, more smoke was reported from an arcing insulator at station causing service to be suspended between and Van Ness. Red Line trains were then forced to operate on a single track between Friendship Heights and Van Ness due to another arcing insulator failure. This led to WMATA replacing 36 arcing insulators the next day.
February 4, 2020 On February 4, 2020, smoke was reported at when maintenance crew attempted to remove a padlock from an employee locker in a mechanical room at L'Enfant Plaza by using an unauthorized tool. The crew extinguished the fire but operators on trains that were carrying passengers were told to do a track inspection of the vicinity before the smoke can clear out. WMATA took criticism from the smoke incident.
"Lost Child" emergency pull On July 21, 2015, a man at the
L'Enfant Plaza station pulled an emergency stop lever after apparently missing his stop. The man was captured on closed circuit television forcing open the doors of the stopped train and running down the platform with a young child in hand. In accordance with Metro procedures, the entire line on which the train had stopped was secured with teams dispatched to review the situation. The action caused extensive delays and led to outrage among Metro passengers. Several days later,
Metro Transit Police reported that the man had stopped the train after being separated from a second younger child on the train platform. The man was questioned by police and no charges were filed.
Structural incidents On September 1, 2016, the Rhode Island Avenue station was shut down due to falling debris. After two incidents of concrete chunks and metal falling from the mezzanine ceiling, Metro announced the temporary closure of the station pending emergency investigation.
Summary of incidents ==Oversight==