My current attempt:
I dragged the second curve away from the first curve to see the dimensions.
Red segments are lines where the camber is above a certain value…
The curves are divided regularly, rebuilt as polylines and removed the least significant vertices of the polylines.
I used a script by @Mahdiyar to create 2-point arcs with rounded radii and finally chose the ones which fit best.
curve_to_rounded_arcs_and_lines.gh (34.9 KB)