Circle Island
This is a map i made for people who likes to build circular cities. Its set up to only use oneway lanes, as i wanted to make a city myself that way.
Most of the land is suited for farming and forestry. There are no ore or oil so if you want that you have to add that yourself.
Also be careful with your water and sewage management. Sewage will start flowing backwards into the middle when youre city starts to grow, so consider this as a challenge. Or just buy two tiles and place it in ocean when you can. 🙂
Have fun!