Was there not a serious incident on London Underground a few years back where someone got overcarried on empty stock and was either injured or killed trying to move from one coach to the next?
I believe the incident was at Liverpool St on the Central line whereby a customer died after they had fallen between cars. London Underground fitted "Inner Inter Car barriers" and "Canopy barriers" on the 1972 and 1992 stocks which are designed to prevent someone from exiting the train between the cars and also made proposals to withdraw detrainment staff for trains fitted with these barriers except for trains going into depots or sidings at the end of their service. This plan was subsequently dropped after a dispute arose over concerns of abuse and assault of train drivers and the risks of injury and distress to customers who fail to alight and get carried into reversing sidings. There is a catalogue of information on this RMT blog which is on a publicly accessible website. A workaround was put in place on the Bakerloo line whereby the driver will close the doors from the cab and station staff will physically check the train by looking into the windows from the platform; other lines still have the driver or platform staff physically checking the train and closing the doors by operating a button car by car.Quite some years ago now, it happened in the Kennington Loop of if it is the one I’m thinking about.
I do recall hearing of an incident on Kennington loop but not sure what or when it was. Interestingly enough, Kennington loop is one location where trains are not detrained and are not checked by platform staff either.