Another Map

[numbersix]

Got this map finished at last, any feedback would be welcome - as would ideas for my next one (no more cities though please!). There is another version of this I am working on with level 4 tunnels simulating a u-bahn system through the city but I am having some issues with getting it to work correctly.
The map uses Don Maddox's custom symbol set and is designed to be played east to west.

James