Roundabouts are popping up everywhere, they can be safe if you know how to use them of course.
Some drivers, however, aren't too sure about getting around a roundabout.
For one, what's the speed limit?
Some roundabouts post their speed limits, others don't, and if you're confused, Kate Porras from the Grand Junction Police Department says play it safe, "Drive the speed that allows you to negotiate that curve," she says, "Without going over the road's posted speed limit."
If you happened to miss your turn, keep going around because you won't get a violation for driving in a complete circle.
An insurance institute for highway study looked at about a quarter of the roundabouts in Colorado before and after they were put in.
They found crashes were reduced by more than a third.