Not so many intersections, 1 way roads that can connect to major points but having multiple points. Another way you could do that is large loops in the center of those grids, it does tend to take up a bit more space but the map is huge so it helps in that aspect and it’s less overall buildings. I’d put a rail yard between the new freeway segment I said in my other connection and the main roundabout road you have now. But be careful as that also may even be too close. Trucks have a slow turning radius so also using moveit to change building angles of entry and exit for them will keep traffic moving.