U-Turn Interchange
Sometimes you are just missing the space to build a full-blown interchange, but just in one direction. The other one though has plenty of space. The U-Turn Interchange was just made for such a situation.
Advantages:
– High capacity
– Smooth changes of elevation
– Doesn’t need a square space to be build
Disadvantages:
– Quite long footprint
– Has weaving, though it doesn’t impede traffic that much
– Is expansive