Chinese construction companies have an extraordinary approach which is best seen in Guizhou’s adjustable highway, with its humanized design.
A superb solution considering demanding conditions. Might be confusing for drivers, but with modern navigation, it works.
This turnabout was built because they could only put and off ramp to an exit on one side of the highway, so traffic coming in the other direction has no exit. In order to take that exit they have to keep driving and use this turnabout to go back in the opposite direction and then be able to access the off ramp.