Hey, just made another 3d model.
Blue floor = public access
Red floor = passenger access
Browny floor = staff only
Ah, I think modelling isometric things is a lot better then making them in pixels, mainly because it's easy as pie, everything can be made to the right size, and same size, when dealing with walls and stuff, and it looks lovely and clean if you do a nice render.
Also I made a blog update with a batch of new models there:
www.trib3.com/blog