The hard part is when back to back traffic for 15 miles worth of cars is coming from one direction and everyone else is either too scared to zipper merge or they allow the one direction to have perpetual right of way.
At some point of heavy traffic, the circle right of way must yield for zipper merging, else face my ass aggro merging and beeping at everyone who doesn’t.
There are certain kinds of rules and discoveries that society can make that they must defend by making rules that eliminate anyone that dares bring the adverse ruling up again. You want slavery and propose it back into law? Society kills you for that.