> Vehicles already on the roundabout must yield to cars entering it.

Yeah but that's theory and theory only.

I would say that 99.9% of anything that look like a roundabout is a "normal roundabout" where the priority is for people in the center, not for the ones entering. This is currently the same than the rest of Europe.

Place de l'étoile is an exception, not a rule and the total number of roundabout like that in the country can probably be counted on one hand.