Hi. I have the same probleme with a roundabout of 12.5 m of radii. I create the superelevation section and lane. But I can't edit or take this section. Therefore, I can't assign this section to its corridor.
I've seen in the answers that it isn't possible construct a superelevation for little roundabouts. We must proceed with line with variable slope. Is it true? How can I to make a report of superelevation for this roundabout?