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Wide Roundabout highway exit (with quay walls)

Note: If you want to use this intersection, you have to lower the quay walls yourself, because the game editor can't handle it. All you have to do is select all quay's nodes using the "Move it" mod and lower it by clicking Page Down several times.

The wide Roundabout intersection is commonly used (e.g. in the UK), where an ordinary diamond intersection cannot cope with the capacity.

Versatile, efficient, small, simple, and cheap.

Version with the sunken main 3-lane highway which crossing with a 4-lane avenue. Of course, you can easily upgrade the roundabout to more-lines-highway. Same with avenue.

The version without quay walls: https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2224366555