the loading track is a track that is used to load items onto trains.

place one in the middle of track where a freight train should stop. it takes items from a chest beneath it and into the train.

make sure to add a “point speed restriction” in front of the un/load tracks, set to <2. this means that the freight train will go slow enough to drop off the items.

make sure that the loading track is in front of the unloading track, otherwise you will end up moving items from one chest to the other, and not the train.