Pls remove Depot #000 text from the map, after it has been disbanded/abandoned.
The AI exceeds in the Depot constructions (not in town/cities) and the map, in the later years, is covered with disbanded depots, with a very ugly effect...
It can't be removed. Once you build a depot a railyard level 1 is created in that hex. When you disband the depot the level 1 railyard is still present and it must be tied to a location name.