When driving past the R57/R714 intersection, I noticed that it needs quite a bit of attention. I have added the segments as far as I am allowed to edit, and attached the bits that doesn’t quite meet, and changed it to a Major Highway (as per the Wiki).
However, I don’t know that road at all, so I can’t edit much further on it for now, even if I did have permissions there.
https://world.waze.com/editor/?lon=28.65274&lat=-28.08541&zoom=5&layers=BFTFFTTTTTTTTTTTTTTTTFT