Picture a junction with signal A on one of the trailing branches and signal B on the facing side. (Both signals correctly placed in relation to spline points and point lever.) After a train goes through the junction from the trailing side, A goes red and B goes yellow. When the train passes the next signal, C, B goes back to red and A will go yellow if there is another train coming.
That is how it should be and that is how it usually is. Sometimes it behaves strangely. Signal B stays yellow, and hence A stays red, while the train goes way down the track, passing not only C but also signals D, E, F.... Following trains form a queue behind signal A.
Eventually B goes red when the train passes another trailing junction and the facing-side signal at that junction turns yellow. Odd that that linkage exists in the logic. The junctions are a long way apart, certainly greater than the distance at which the AI can "see" signals.
The solution is simple. Take away signal B. But then the route is not correctly signalled in both directions.
Can anyone shed a light on this? The only clue I have is that the anomalous junction is the last of several close together, some leading, some trailing, on or off the main line.
That is how it should be and that is how it usually is. Sometimes it behaves strangely. Signal B stays yellow, and hence A stays red, while the train goes way down the track, passing not only C but also signals D, E, F.... Following trains form a queue behind signal A.
Eventually B goes red when the train passes another trailing junction and the facing-side signal at that junction turns yellow. Odd that that linkage exists in the logic. The junctions are a long way apart, certainly greater than the distance at which the AI can "see" signals.
The solution is simple. Take away signal B. But then the route is not correctly signalled in both directions.
Can anyone shed a light on this? The only clue I have is that the anomalous junction is the last of several close together, some leading, some trailing, on or off the main line.