... from the begining the terrain levels have been one of my main concern.
I'm taking inspiration from E Marginal way S., I'm not going to make an exact replica, but one needs a prototype to start with. Here the tracks run at the same level of the street, or below, so I put some attention to the ground levels.
There will be three industrial spots, with their private railroad crossings, the first is already in an advanced state of construction:
The next two are planned to be a cement factory and a biodiesel reseller: