3-way Roundabout Interchange
This is 3-way highway interchange with a roundabout. It can handle quite a lot of traffic going through it.
If you would like to increase the capacity even more, you could upgrade the highway ramps with 2 or 3-lane highway if you have the Network Extensions Project.
If you have any recommendations feel free to post them down.
If you want a particular type of interchange, you can post an order to me in the comments.