OK, bringing this back up since I just moved to an area that has several more roundabouts... I guess folks around here just don't know how to properly navigate them? The point is to keep moving and only yield to your left, it's not a 3-way stop and an opportunity to be polite and someone else go.
Also, high-beam lights. Now that it is darker earlier, apparently other drivers don't care about blinding oncoming drivers...
Lastly... rain. People around here drive slower when it rains than people up north when its snowy and icy. I'm completely baffled that when I'm driving 65 on a posted 55, and I'm getting passed left and right. Yet when it's raining, those same people are likely the ones who back it down 45 like the rain is going to somehow magically push them off the road.
Rant over.
Ever had a car hydroplane with you? It will magically push you out of the road, into the wall, or into another car. Especially if you're in a front-wheel drive car. Every time it rains here, some idiot driving 75 mph through the pouring rain hydroplanes, wrecks several other people, and shuts down the interstate for hours.