RPG city creator is sort of semi abandonware.....the guy who wrote it gave it out for free and I know that someone at the guild has popped a copy of the install file on server where we can still find it. Ah found it You can download it from here.

Yeah the yellow / green lines are all roads but I probably won't use them (the buildings define road edges) the oranges are meant to be parks but I just wanted something to break up the city and they were good to do it with. I'm probably going to use another generated city with very small and windy roads for certain parts and drop them in somewhere.

Enjoy it, it really rocks - and with a bit of clean up produces stunning results.