Whoopsy:

We are talking about a 3-way, a T intersection where a side road intersect with a through road. I have yet to find one example  of a T intersection where the cars on the through road has to yield to the car merging from the side road.

And yet (at least in Germany) the "right before left" rule (as explained by RC) applies, unless the driver in the straight driving car has seen this roadsign before approaching the intersection:

600px-Zeichen_306.jpg

 

Though maybe it's only a wording issue: if "through road" has the meaning of "Vorfahrtstrasse" ("way of right road") then you're right, though in Germany the roadsigns define which street a "Vorfahrtstrasse" is - it's not defined by the size of the road.


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public roads: Porsche 981S white/black/red, toll road Smiley : Porsche 997 GT3 Arctic/Black