A red signal does not always prevent a train from selecting a path. It only gives the pathfinder a penalty for selecting a certain path, so that it is less likely to select it.
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The extra penalty is only applied when the signal is forced red by a circuit connection. Standard red signals don't have special penalties, just the penalty for a train being in the way (otherwise the signal wouldn't be red).
Im not thinking that it will pass through. A red signal only prevents a train to enter the path but it doesnt lock the path for the pathfinder.AnthonyForPOTUS wrote: ↑Sun Oct 28, 2018 2:53 amRed signal will completely block that path. A train cannot path through a red signal except under manual control or if it was already pathing through it when it turned red and it cannot stop in time. I am not sure why you think it can path through it.
So the train will wait for the signal to turn green instead of taking the other path where it could get closer to its destination due to penalties. The problem start when the train waiting penalties go bigger then the signal penalties.