Factorio mod adding "logistic-train-stops" acting as anchor points for building a train powered logistic network.
It can handle multiple train configurations and will pick the best available train for a delivery.
With Choumiko's RailTanker it will also deliver liquids.
Forum: https://forums.factorio.com/viewforum.php?f=214
Download: https://mods.factorio.com/mods/Optera/LogisticTrainNetwork