Roundabout Sign
The roundabout sign is a diamond-shaped yellow warning sign with a black circular arrow symbol showing the counterclockwise flow of traffic. It warns drivers that a roundabout — a circular intersection where traffic flows in one direction around a central island — is ahead. Roundabouts are increasingly common in the United States as a safer alternative to traditional signalized intersections. Studies show roundabouts reduce fatal and injury crashes by 78-82% compared to traditional intersections because all traffic moves in the same direction, speeds are lower, and there are no head-on or high-speed right-angle collisions. When entering a roundabout, yield to traffic already circulating inside the roundabout. You must travel counterclockwise (to the right) around the center island. Use your right turn signal when you're ready to exit. On multi-lane roundabouts, choose the correct lane before entering based on your exit: use the right lane for the first exit (turning right) or going straight, and the left lane for continuing past the first exit or making a U-turn. Never stop inside a roundabout unless necessary to avoid a collision. Don't change lanes within the roundabout.
Rules & What to Do
Slow down as you approach. Yield to traffic already in the roundabout. Enter when there's a safe gap. Travel counterclockwise. Do not stop inside the roundabout. Use your right signal when exiting. Choose the correct lane before entering multi-lane roundabouts.
Penalties
Failing to yield when entering a roundabout carries fines of $100-$250 and 2-3 points. Going the wrong way in a roundabout (clockwise) is a serious violation with fines of $200-$500 and potential reckless driving charges.
For Commercial Drivers
Roundabouts can be challenging for commercial vehicles due to their size. Many roundabouts have a truck apron — a raised, mountable area around the central island designed for the rear wheels of large trucks to track over. Use the entire roadway if needed, but yield to other vehicles. Check for signs restricting commercial vehicles or indicating truck routing. Approach slowly — once in the roundabout, a large truck is committed to its path.
Frequently Asked Questions
How do you drive through a roundabout?
Slow down and yield to traffic already in the roundabout. When there's a gap, enter and drive counterclockwise around the center. Signal right when approaching your exit and exit the roundabout.
Who has the right of way in a roundabout?
Traffic already inside the roundabout has the right of way. Drivers entering must yield. Pedestrians in crosswalks at roundabout entrances and exits also have the right of way.
Which lane should I use in a roundabout?
In a multi-lane roundabout: use the right lane if turning right or going straight to the first or second exit. Use the left lane if you're going past the second exit or making a U-turn. Choose your lane before entering.