Here’s an issue that has tickled the community for a while. Something that the addition of the new rolling stock a couple of months ago seemed to bring to the forefront. That is a train stopping to pick up cargo from a factory, but then leaving without any.
From a visual point of view it’s hard to work out what is going wrong (in fact I couldn’t and had to ask the devs to explain it to me). However, once I understood it made sense and is pretty logical.
Here’s a short video explaining the situation