> Signals indicate whether the next segment is occupied, not whether any given train will fit in there (and potentially block a segment or intersection behind i

> Signals indicate whether the next segment is occupied, not whether any given train will fit in there (and potentially block a segment or intersection behind it.) That's what chain signals are for. If a train waiting at a signal causes issues, replace the previous signal with a chain signal to prevent the train from problematically waiting at the signal.