Recently, the Richardson City Council got into what passes for a contentious exchange over the question of naming parks (or, at least, naming of bridges in parks). What it boils down to is that the lack of any policies in Richardson results in naming by whim — i.e., when someone on City Council gets a notion to name something after someone, and just mentions it at a Council meeting, and others on the Council agree it's a good idea, it happens. Just like that. I called it government by whim.
Our big neighbor to the south has a different practice.