I did a bunch of driving in France and what struck me most was the near complete absence of stoplights and even stop signs. Where I was, admittedly smaller places, big intersections are usually roundabouts, and smaller ones have a yield sign or follow "priorité a droit" which is basically a 4-way yield where you yield to the person on the right.

I don't know the traffic accidents stats, but overall the system really does rely on people knowing the rules as opposed to signalization, and it (mostly) seemed to cut down on time spent waiting.