At least 22 people die and more than 200 are injured after a train derails on Moscow's packed metro during the rush hour.
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June 22, 2009 - UNITED STATES
A head-on collision between two subway trains in Washington leaves nine people dead and more than 70 injured.
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July 3, 2006 - SPAIN
In the eastern city of Valencia, a metro train traveling at twice the speed limit of 40 kilometers (25 miles) an hour derails, leaving 43 dead and 39 injured.
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February 18, 2003 - SOUTH KOREA
Image via Gough's Tech Zone
A fire started by a man trying to commit suicide destroys two metro trains, killing 198 and injuring 147 in Daegu, in the southeast.
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October 28, 1995 - AZERBAIJAN
292 people die and 168 are injured when a fire breaks out on the Baku metro when a train is between two stations.
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November 18, 1987 - BRITAIN
Image via The Sun
A fire on a wooden escalator in London's King's Cross underground station kills 31 and injures 150.
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February 4, 1977 - UNITED STATES
In Chicago, an elevated railway train topples on to the street below after being hit by another train. Eleven are killed and more than 200 injured.
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October 20, 1975 - MEXICO
In Mexico City, two metro trains ram into each other leaving 23 dead and 55 injured.
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