Use hexagonal structures in your city when grids are just too boring. This cell contains four 2x2 zones, eight 3x3 zones and eight 1x1 zones. To use it place one element and delete its edges where you want to add another element. Note: a highway should be connected to crossings which on the other hand isn't connected to the roads to inner roundabouts to avoid traffic problems. I had to use highwayramps to keep the zoneforms how I want them. Have fun!