Question at 2.20 why are the home signal and the ground shunt signal both cleared at the same time therefore signalling a conflicting move? I don't understand why the interlocking would allow it. Thanks
The shunt signal in both directions is operated by one lever on the ground frame, the signalbox controls the home signal. A ground shunt signal being cleared doesn't imply that the line ahead is clear
The train has come out of Pentrefelin yard. The signalman has to pull a lever to release the ground frame there, after which the train crew set the points to allow the train onto the mainline, then reverse a signal lever there that clears a ground shunt signal in both directions. The home signal on the bracket then has to be cleared by the signalman to allow the train onto the mainline but no other signals can be operated until the ground frame release is put back @@anthonywarren4225
@@djp252 Thanks that seems to make things clearer. Its one one of the interesting things about mechanical signalling with all the variations at different boxes. I'm a signalman at the WSR and each location is obviously unique
Enjoyable behind the scenes views! Thanks for sharing!
Question at 2.20 why are the home signal and the ground shunt signal both cleared at the same time therefore signalling a conflicting move? I don't understand why the interlocking would allow it. Thanks
The shunt signal in both directions is operated by one lever on the ground frame, the signalbox controls the home signal. A ground shunt signal being cleared doesn't imply that the line ahead is clear
@@djp252 sorry I don't understand that obviously something unique to that box
The train has come out of Pentrefelin yard. The signalman has to pull a lever to release the ground frame there, after which the train crew set the points to allow the train onto the mainline, then reverse a signal lever there that clears a ground shunt signal in both directions. The home signal on the bracket then has to be cleared by the signalman to allow the train onto the mainline but no other signals can be operated until the ground frame release is put back @@anthonywarren4225
@@djp252 Thanks that seems to make things clearer. Its one one of the interesting things about mechanical signalling with all the variations at different boxes. I'm a signalman at the WSR and each location is obviously unique