I went to check on google maps, I suspect I misremembered and it was a 4 way priority loosing (downwards triangle), but the road markings are mostly worn out (but I think they are 4 dashed lines, not continuous), and Germany being Germany, I can't use google street view.

St Peter Strasse / Von der Tann Strasse in Rorhbach in Heidelberg.

Sorry for causing a stir with my bad memory, I remembered that from my French point of view that would cause a deadlock.