Right of way at an intersection?

I believe the car turning left must yield right of way. However, there is no mention of it in the Idaho driver's manual. It only addresses 4 way stops. Good driver etiquette mandates the first person getting there to go first. Anyone that doesn't do this is playing by American League rules.

All cross traffic had cleared and vehicle A was the first one to the intersection.

First to arrive goes first - Car A in this case. Car B can go first if traffic on the other street prevents Car A from proceeding.

You can't cover every single situation with a clear "right of way" answer. Common sense has to come into play. Unfortunately kids nowadays seem to have no common sense. They need an answer for every question and can't work it out for themselves.

By simple virtue of arriving first, that one would go first.....assuming there is no approaching traffic.