1 146C(M) routes to Down Main, but it requires 210A R, so is it still the opposing signal of 107? I feel I do not know the exact definition of opposing signal? It seems there is an overlap locking,is it overlap locking between 146C(M) and 107?
2 I remember in indirect route locking, if signal-A is parallel with another signal-B, and they have the same exit, then if B is direct opposing signal of signal C, A is indirect opposing of C. So, I think in 146A(M), 131B(M),131B©,127B(M) need to be route locking. Right or wrong?
3 In 128A(S), why does it need 107A(M) in route locking? I think it does not belong to any of these situation:overlap locking, direct opposing locking, indirect opposing locking....
2 I remember in indirect route locking, if signal-A is parallel with another signal-B, and they have the same exit, then if B is direct opposing signal of signal C, A is indirect opposing of C. So, I think in 146A(M), 131B(M),131B©,127B(M) need to be route locking. Right or wrong?
3 In 128A(S), why does it need 107A(M) in route locking? I think it does not belong to any of these situation:overlap locking, direct opposing locking, indirect opposing locking....