However, you don't really have to slow at all because the curb is not that high off the ground. The drivers who left their tire marks on the surface of the roundabout would agree with me. It was constructed to protect the preschool that sits at the corner. But now, when you circle the roundabout, you must actually point the front of your car directly at the corners, which you never did before. Therefore, the odds are higher now that, if your car were to lose control, you could possibly careen into the preschool's front yard.
Cars encountering the circle decelerate just enough to tear around it and then pick up speed.
This means they're going full throttle on reaching one of four pedestrian crosswalks. As a European by birth, I'm somewhat amused by the negative letters about the introduction of roundabouts in our horrendous traffic system. They work rather well in practically every major city in Europe, especially London, Paris and Rome. The introduction of the roundabout is money well spent. If you're a tourist, yes, it can be a nightmare.