I wonder, how extensive is the adoption of TPWS in the UK? I was under the impression that there are still lines that only have AWS, although they may be ones with little traffic or freight only. (TPWS is an ATC type system that will stop a train if it passes a red signal, whereas the older AWS only provides a warning that the driver must acknowledge else the brakes are applied.)
I was denied access to the video due to my location allegedly
The interesting thing is that unless these human actor protocols and operating procedures are fixed no amount of PTC or Kavach will prevent these sorts of accidents since these automation systems would be perfectly happy with what are essentially inputs at variance with reality (absent independent means of verification of consistency), i.e. not reflecting reality. In automation systems, for them to work right, the real state of the system must be reflected accurately to the system so that actions that it takes based on that information, that is reified into reality are consistent with reality. If not then things like train getting a green signal on the main runs off into a loop and crashes into something will happen. Unfortunately human beings can be very resourceful in screwing up.The Frontline item draws the same broad conclusions as the video does.
