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dud's Lotus Flower Intersection

This is probably my most efficient and detailed creation: A 4-level intersection with two roundabouts inside and full weaving of traffic!

This intersection is fully symmetrical. The trick is that each 3 lanes on an incoming highway is given 9 (3x3) possible paths so that it ends up in the same lane after the intersection as it was before the intersection. This means minimal lane changing which means free flowing traffic!

Straight through is unhindered in all directions. Outer lanes goes on the one-way high-speed upper circle. Inner lanes goes in the two-way lower speed circle at the bottom.
In my test runs it handles huge amounts of traffic without queues but of course it has it's limits like all intersections. Due to it's sheer size and number of components it can be hard to plop down (slope to steep...) but it's certainly not impossible to put down!