White cake, with pink icing. To serve it, I used a knife to cut the cake, then a sort of spatula to lift the slice of cake, then a fork to eat the cake. It was just a simple piece of cake, for crying out loud, but we used three tools to serve it. Of course not. There are lots of causes of sprawl, and lots of types of sprawl.
Sprawl is more complicated than a piece of cake.
We need as many as possible. Right now I am going to put three tools in your anti-sprawl toolkit. They are three general tools, you can use them in many ways and in many combinations. Traffic lights have three colors. Red, yellow, green.