The Charing Cross (Northern line) tube crash occurred at 08:32 hours on 10 March 1938, when a Northern line train ran into the rear of a stationary train near Charing Cross (now Embankment). Twelve people were slightly injured. The accident was caused by a signal technician carrying out a temporary repair to a faulty signal even though he was not familiar with the layout and did not have access to the signalling diagram.