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Roundabout Information
A roundabout is a one-way, circular intersection in which traffic flows around a center island with yield control. All vehicles are required to travel in a counterclockwise direction, to the right of the central island.

To learn more about roundabouts an educational video has been created and made available by the Kansas Department of Transportation. 

View a video created by the Arizona Department of Transportation regarding roundabouts.

Why Roundabouts
Studies have shown that roundabouts:

Improve Safety
Reduction in fatalities, reduction in injuries, reduction in all crash types, reduction in the severity of a crash if it does occur, slower speeds which allow drivers more time to react to a situation, and generally safer for pedestrians because they need only cross one direction of traffic at a time at each approach

Image of rounabout and traditional intersedtio with potential conflict points

Vehicle conflict points are substantially reduced when a roundabout is used as compared to a traditional intersection. The Federal Highway Administration estimates that 45 percent of all crashes nationwide occur in intersections. Roundabouts can help to reduce this number.

• Reduce Congestion
Allows for more efficient driving with less delays during regular and peak driving times

• Reduce Pollution and Fuel Use
Fewer stops, accelerations and less time idling

• Save Money
There is no traffic signal purchase/installation or ongoing power and maintenance requirements

Often times, less pavement is needed than a traditional intersection

Some roundabouts require less right-of-way than a traditional intersection

• Improved Community Quality
Roundabouts can yield quieter environments that are both functional and aesthetically pleasing

How to Navigate a Roundabout
Slow Down

Look to your left to see if there is an appropriate gap in traffic; if one is not available be prepared to stop

Always enter the roundabout to the right and proceed on the right side off the central island

Maintain slow speeds through the roundabout, generally 15 mph to 25 mph

Do not attempt to pass other vehicles or bicyclists

Yield to pedestrians and bicyclists

Always assume trucks need all available space

When emergency vehicles are approaching with their lights and sirens on, completely clear the roundabout and then pull to the right to allow the emergency vehicles to pass

Did You Know
Roundabouts are designed specifically to accommodate large vehicles. Truck trailers may drag over the special apron around the central island – it was designed for this purpose.

Bicyclists can choose to enter the roundabout and circulate as a vehicle or use the sidewalk around the roundabout.

Pedestrians should walk around the perimeter of the roundabout and should not cross the circulatory roadway to the central island. Pedestrians should use the crosswalks on the legs of the roundabout.