Most of the time I'm aiming for big, high-density RCI zones but sometimes I want to build smaller areas that can't blossom into huge pollution spewing factories. Can I limit the density with clever use of space or roads?
How to limit zone density
simcity-2013
Best Answer
In addition to the density of the road, as mentioned by Raven Dreamer, the density of a zone is also restricted by space.
This means that if you build your roads too close together, the maximum density of the zone will be limited, resulting in a 'not enough room to expand' message when you bring up the information for a particular zone.
I especially noticed this when building circular roads, as getting them too close to each other will prevent the density of the zone from increasing due to lack of space.