| Posted by on March 16, 2014 | |
Looks like the signals are out of service.
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| Posted by mmi16 on March 16, 2014 | |
Signals are approach lit - the one facing the camera is dark because there is no train opposing the train in the picture - once the train passes the signal you can see, it will light up and display a STOP indication.
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| Posted by Andrew on March 17, 2014 | |
This sounds a bit more complicated to explain than it probably is to work the system re. the unlit signal. I assume if something was coming from behind the photographer, detection further down would hold the train in view. Now, is there some form of communication to tell the driver that the signal he is approaching is at red, or is there a 'distant signal' or does he approach at a speed that allows him to stop?
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| Posted by mmi16 on March 22, 2014 | |
When a train occupys a 'track circuit' it will light up the signals that protect that circuit, in all directions. When the circuit is not occupied - no signals are lit. The circuit at the camera position is not occupied by a train and the signal is not lit.
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