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Nano-Turbine

Nano-Turbine by BlackAeronaut

This thing is tiny as far as turbine intersections go, but it's an absolute beast once you get it set up properly using TM:PE. You'll need Network Extensions 2 for some of the assets. Created because a simple roundabout just doesn't cut it sometimes, and other "turbo roundabouts" prove to be either... lacking... or are just too big for me to fit into my developments. (This bad boy measures 20x20 squares, or 160x160m.)

The odd-ball sunken-into-ground look is to split the difference between the upper crossing and lower crossing - this allows for a much shorter incline at the entry points. If that's not to your liking, though, you can easily change it using Move It by selecting the straight-through sections, as well as their nodes, and using the "Align Height To Object" tool. Make sure you only do one at a time (upper section first, then lower section), otherwise it'll flatten the whole thing into an unusable pancake.

(Fortunately, Move It has a lovely "Undo" feature mapped to the 'Ctrl-Z' keystroke... but it's better to do it right the first time.)