I live here so have been both cars in this scenario numerous times.
Red car is coming uphill turning into the road on the right. Blue car is turning into the road red car is exiting. To the left of red car are trees and bushes which completely obscure the road on the left meaning neither car can see the other until already mid manoeuvre. The road red car is on narrows at the point where you turn and there is no room for two cars to pass so either red car has to reverse back down the hill until the road widens (often impossible if other cars behind) or blue car has to reverse back out into oncoming traffic (also often cars behind hoping to go down the hill)
So based on all that- who has right of way and what should happen when two cars meet like this?
(Ps sorry I have no actual colours!)