Specification unclear. If two or more entries to the intersection have at stopped vehicle waiting to cross, a waiting vehicle is somewhere "on the right" of each waiting vehicle. If only two vehicles are present, and are across from each other, and at least one of them wants to turn across the path of the other, each vehicle is _equally_ "on the right". A relative reference is not sufficient.
Some people try clock-relative turns, but that only works if the vehicles arrived while an existing rotation (of prior vehicles) was in progress.
Some people try clock-relative turns, but that only works if the vehicles arrived while an existing rotation (of prior vehicles) was in progress.