How to design a city?

I do apologise if anyone got the feeling that i'm trying to say my opinion is more valid than anyone elses by stating that, I don't mean to be patronising, I, like mst of the others here am just trying to think of ways to improve the situation.

Sorry not meant to be a dig, more a compliment to the fact that you should have a pretty good analytical mind, a good grasp of maths e.t.c. A very important skill I.M.O (and it should be given my world). Bad choice of sentence structure on my part. This is quite an interesting thread so keep putting across your opinion, I'm not trying to bullzoe either, even if I seem like I am.

EDIT: P.S The traffic flow modeling is serious. If you have an opportunity to do a general mathematical modeling course that may have traffic flow modeling in it. I did maths at uni and took a course on this which had some mathematicians and some engineers, but as ever it depends what is available to you. It's quite interesting and the basics models are very quickly taught.