With 12 lanes of cars constantly approaching the intersection, that's a lot to keep track of to figure out who goes first.
I saw this recently with Irma in FL. Mostly each set of lanes would start moving roughly together once one person got brave enough to enter the intersection. But it's very hard to adjust to.
I even found myself sometimes just going after stopping without fully checking to see if I had the right-of-way or not.
https://www.google.com/maps/@37.5600363,-122.2845215,3a,75y,...
(I thought this was an early George Carlin joke but I can’t say for sure.)
In New York we call it driving.
People can be incredibly cordial when there aren't any problems or one big common one they can focus their efforts around. It isn't until personal liability enters the equation that the finger-pointing gets going.
Reason being, given that this construction is expressly prohibited in many (most?) jurisdictions, there's clearly no right-of-way rule for such a combined intersection that's universally understood or taught, and I can think of several "reasonable" candidate rules that drivers would invent on-the-fly upon first approaching such an intersection.
As an aside, I'd personally assume that such a "all-way combo" intersection would essentially devolve into an all-way Stop in any case where traffic is either approaching or stopped at two or more cross directions, if only because this seems to be the rule least likely to fail catastrophically against both itself and a variety of other rules.
Does anyone know of any jurisdiction that permits this sort of intersection, and, if so, what the right-of-way rules are there?
No, traffic one one road has the right of way and traffic on the intersecting road has to yield the right of way.
This way in case of issues with traffic lights or when the city is jammed and they turn off the lights, everyone knows what to do.
I've seen less than a dozen times either a blinking-red or a dead light.
Blinking red is more confusing than a not-working-at-all traffic light IMHO.
And if people actually did that, it would be a disaster.
I'd like to think the behavior described is due to people not being complete idiots.