Brits have them. The French have them (30,000, the most in the world). Aussies have them. Mexicans have them. La Jollans have them. You can call them traffic circles, rotaries, rotundas … or as we call them, roundabouts. Five of them have been a fixture along La Jolla Boulevard since 2008. They've improved traffic flow, reduced speeds, reduced collisions and reduced auto emissions. But, even after nine years, it appears that many drivers still don't know "roundabout etiquette."
