132 were injured in the accident. 1913: The Bramminge train accident. An express train became derailed near Bramming. 15 were killed, including Peter Sabroe, and 54 injured. 1919: The Vigerslev train crash. An express train from Korsør drove violently into five wagons at Vigerslev. The train was stationary due to an emergency application of the brakes and reversing to retrieve a child who had fallen onto the rails. 40 died and 30 were severely injured. 1967: The . An express train hit another outside Odense. 11 people died while 47 were injured in the accident. 1988: The 1988 Sorø derailment. A train ran off the rails at high speed at Sorø. Eight people died and 72 were injured. 2019: The Great Belt Bridge rail accident. A passenger train collided with a semi-trailer from a passing freight train. Eight people died and 16 were injured. Future expansion As part of ongoing plans for high-speed rail in Denmark, new corridors and lines are being planned; including the Vestfyn Line between Odense and Middelfart and a new Hovedgård-Hasselager line. Other regional rail plans include a new Aarhus–Silkeborg line and a line to Billund. Operations Urban rail transport Urban rail transport in Denmark currently consists of one metro system in Copenhagen, one light rail system in Aarhus and two commuter rail systems, the S-Train in Copenhagen and the Aalborg Commuter Rail. Copenhagen had a tram network from 1863 until 1972 when trams were replaced by buses and private cars because they were considered an outdated form of transportation. Odense Letbane as well as Greater Copenhagen Light Rail are under construction. A rapid transit proposed for the Øresund metropolitan area, the Øresund Metro is also under discussion. Copenhagen Metro The Copenhagen Metro is an automated, 24-hour rapid transit system which serves Denmark's capital city, Copenhagen. It began operation in 2002. It is also the only rapid transit system in Denmark. As of March 2020, the system consists of four lines: M1, M2, M3 and M4. Planning of the Metro started in 1992 as part of the redevelopment plans for Ørestad with construction starting in 1996, and stage 1, from Nørreport to Vestamager and Lergravsparken, opened in 2002. Stage 2, from Nørreport to Vanløse, opened in 2003, followed by stage 3, from Lergravsparken to Lufthavnen, in 2007. The City Circle Line is an entirely underground 15.5 km loop through central Copenhagen and Frederiksberg with 17 stops.