I have created a prop zoo that has a lot of trains, tracks, and other railway transportation method's models.
A lot of the trains in the background are custom content, some examples from various vehicle packs such as the Facepunch Vehicle Contest Pack or Frontline. If you have the custom content, great! Otherwise, this map will provide to you a vanilla prop library for ease of use in payload or background mapmaking.
Track and Train Prop Zoo 2017-07-02
From payload tracks to big trains, this prop-zoo map has you covered.