Great video, Scubaman. I was pleased to note that the cars in the video have little red signal lights that are displaying the proper etiquette for using turn signals in a roundabout. This is a pet peeve of mine, particularly with many North American drivers, who may be less familiar with how to use a roundabout. Ideally they should be used not just upon entering and exiting, but also if changing lanes while inside the circle.

This video also uses the yield signs at the entrances to the roundabout, giving priority to those already in the circle. Traditionally most roundabouts in France operated under the French "priority-to-the-right" rule, where the traffic already in the circle had to yield to the traffic entering the circle. Most have now been converted to the new system of yield signs.

Without the yield (or similar priority) signs, technically traffic entering the roundabout still has the priority under French law. The most famous remaining exception to the new system is the massive, multi-lane roundabout that circles the Arc de Triomphe in Paris.