Roundabout is useful in connecting bunch of junction to a community and it could clear up all of your heavy traffic road.
Up until recently, I had troubles in creating curved edge road or roundabout and I’ve been playing it quite some time till I figured how to actually use the Curved Road tools .
Now that I have figure it out it’s actually quite simple to create.
The basic of making one is like creating a square box road where you need to snap every road like a perfect symmetric.
Imagine creating a square box using a Straight Road tools. Starts from the Left – Down – Right – Up – and back to the Left again.
Here’s a video guide that I made on how to create a perfect square roundabout in Cities Skylines