30-07-2014, 09:40 AM
Probably best to explain some of my reasoning so its easy for you to correct it, when I had the first attempt at 171A(M) I resoned that if the signaller had keyed 225N and 228R the route would set up to 225B.
Therefore 122C(S) to 138 signal would conflict with the route, i reasoned it would therefore be appropriate to have 122C(S) normal and free of sectional locking or the train timed to a stand at CP tc, my reasoning is there could a movement into the goods yard from 142 at the same time the route is set from 171 and at the same time there is a shunting movement from 122 to 138.
Therefore 122C(S) to 138 signal would conflict with the route, i reasoned it would therefore be appropriate to have 122C(S) normal and free of sectional locking or the train timed to a stand at CP tc, my reasoning is there could a movement into the goods yard from 142 at the same time the route is set from 171 and at the same time there is a shunting movement from 122 to 138.