An investigation has started after a Tube train was sent into the path of another train during Wednesday morning’s rush hour.
Transport for London (TfL) said the Hammersmith & City Line train was wrongly switched to an eastbound track after leaving a siding at Plaistow.
TfL said the driver stopped the train immediately and the nearest eastbound train was stationary almost 1km away.
The Rail Accident Investigation Branch has been informed of the incident.
The Office of Rail Regulation was also notified.
Last month an out-of-control engineering train, without a driver, went through six stops on a 13-minute journey on the Northern Line.
This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.