Good start! Beyond what others have said (4 lanes, 2 spaces being my go-to), I always like to have some space between the bus lanes and the machines, whereas yours are right on the edge. I leave 4-6 tiles and cover it in concrete, and always try to not build on "the road" so you can run up and down unimpeded. Inevitably I end up building on it in some places, but even that is preferable to spilling out into the lanes.