Oh dear.
"A senior Network Rail engineer with more than 10 years' experience and who had seen information about the crash said only a 'major' signalling error could have caused the crash.
Speaking to Mail Online on condition of anonymity, they claimed that when the GWR train collided with an object and derailed, there should be an 'automatic obstruction warning' to stop any train entering that same mile-long stretch.
'There has been a major flaw within the signalling system within Network Rail. The system says that the line is not safe for the passage of another train because there is an obstruction on the line,' they said, adding: 'According to my system, the signalling system was aware seven minutes before impact. It should've automatically stopped the train. It should've automatically set all signals to red. If the driver didn't see the signal, the system should've made the train stop.' The whistleblower added: 'I've realised for a number of years there has been numerous failures within [Network Rail]' and said they had feared an incident like this would happen 'for the past two years'."
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