nope urban planners are like gods. Think Sim City.
I have a friend who's an architect and the urban planners tell him what to draw in layout terms.
Then if planners go to the people there the ones at town meetings saying "hey folks we would like to this and this, you like? vote."
[a href="vny!://en.wikipedia.org/wiki/Urban_planning"]vny!://en.wikipedia.org/wiki/Urban_planning[/a]
[img style="width: 550px; height: 490px;" src="vny!://www.nyc.gov/html/om/gif/2005/flushing_commons.jpg"]
False Creek, Coal Harbour, Yaletown, Granville Island, West End are examples of mega urban planning. They decide where to put the buildings, interact with the environment and so on.
For small scale, your house, apartment, condo, place of work, highway, skytrain line was all thought up by an urban planner.