WisDOT Roundabout Educational Video: Take it Slow. How to navigate a multi-lane roundabout - This is the Wisconsin DOT educational video for navigating a multi-lane roundabout. WisDOT took a different approach to roundabout public outreach with this light-hearted, fun, easy-to-understand tutorial.
All About Wisconsin Roundabouts
Information on the safety and efficiency of modern roundabouts, and the proper way drivers, bicyclists and pedestrians should use these types of circular intersections.
For a larger version of the information, please click directly on the picture.

Choose the proper lane before entering: As you get closer to the roundabout entrance, it is very important to observe the signs and arrows to determine which lane to use before entering a roundabout. Black and white
signs on the side of the road and white arrows on the road will show the correct lane to use. In general, if you want to make a left turn, you should be in the left lane or other lanes that are signed and marked as left turn lanes. If you want to make a right turn, you should be in the right lane or other lanes that are signed and marked as right turn lanes. If you want to go straight, observe the signs and arrows to see what lane is correct.

Drivers approaching a roundabout must reduce their speeds, look for potential conflicts with vehicles already in the circle, and be prepared to stop for pedestrians and bicyclists.

Once in the roundabout, drivers proceed to the appropriate exit, following the guidance provided by traffic signs and pavement markings.
This video animation gives a focused view of how traffic traveling eastbound on Iowa Street interacts with an active rail crossing and the roundabout. Special traffic signals at the railroad crossing, called Queue Cutters, hold and release traffic in intervals after a train has just passed. This allows traffic at the roundabout to move more smoothly and increases safety at the railroad crossing for motorists, so vehicles don’t block the railroad tracks.
This video animation gives a general overview of the three roundabouts including standard signage, markings, and operations for modern roundabouts. When needed, the traffic near the roundabouts is coordinated with the nearby rail line with special signing and signals, although during this video no train crossing events actually occur.
This video animation gives a focused drive through of the three roundabouts with a railroad train crossing event and special overhead changeable message signs on Marquette Rd. at Wisconsin St. and Blackhawk Ave. for the northbound left turn lane at these two intersections. The special overhead blank-out sign is a multiple message sign that warns of a train on tracks, and no left turn restriction for the northbound left turn lane, if appropriate as traffic conditions dictate.
(From the Wisconsin DOT)

Modern roundabouts are among the newer forms of intersection control in the U.S. along with the J-turn, Echelon, diverging diamond, and others. Wisconsin has over 200 roundabouts installed and operating at this time. Several others are in the planning stages around the state. The modern roundabouts are much smaller than the "traffic circles" of earlier years.

Roundabouts provide safe and efficient traffic flow. A number of safety studies have been researched by the University of Wisconsin Traffic Operations and Safety laboratory (UW TOPS lab), the Insurance Institute for Highway Safety and others internationally.

Roundabouts move traffic safely through an intersection because of:

* Slower speeds
* Fewer conflict points
* Easier decision-making

The safety studies by the UW TOPS lab shows that roundabouts provide a:

* 52 percent reduction in fatal and injury crashes
* 9 percent reduction for all crashes

Roundabouts are also bringing about a significant decrease in severe crashes.

Emergency vehicles in the roundabout

* Always yield to emergency vehicles.
* If you have not entered the roundabout, pull over and allow emergency vehicles to pass.
* If you have entered the roundabout,
continue to your exit, then pull over
and allow emergency vehicles to pass.
* Avoid stopping in the roundabout.


How Roundabouts Work

The Benefits of Roundabouts

Frequently Asked Questions (FAQs) about Roundabouts

Roundabouts in Wisconsin

Roundabouts for Kids

Design Information