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Two modern roundabouts were completed in Janesville in 2007, one at the intersection of Sandhill Drive and Sandstone and the other on Morse Street off of Highway 26 at the entrance to the new Menards development site.  In 2013, two roundabouts were constructed at the Racine Street on/off ramps with I-39/90.

A modern roundabout is a circular intersection that regulates traffic without the signs and lights used in traditional intersections.  A roundabout provides a safer driving environment by reducing speeds and conflict points, thus allowing easier decision-making for drivers.  Studies have shown that roundabouts have fewer crashes and are more efficient than traditional intersections.

Driving a modern roundabout is easy.  All vehicles yield the right-of-way to traffic in the roundabout, enter when a safe gap appears, and proceed counter-clockwise around the central island until they reach the desired exit point.  The following points detail the process:

  • Upon approaching the roundabout, slow down to less than 20 mph and be prepared to yield.
  • Watch for pedestrians and bicyclists.  Allow pedestrians to cross and bicyclists to merge.
  • Upon passing the pedestrian crossing point, drivers should look left and wait for an appropriate gap in the circulating traffic.
  • Stopping is not necessary if there is a sufficient gap in traffic.
  • Enter the roundabout and proceed counter-clockwise to the desired exit point.
  • Do not stop in the roundabout.
  • Watch for pedestrians and bicyclists while exiting.
  • Counterclockwise around the central island, drive a quarter-turn to make a right, a half-turn to continue straight, and a three-quarters turn to make a left.
  • Making a U-turn is completely acceptable at a roundabout. Drive counterclockwise around the central island.

Helpful Links

Roundabout Brochure

State DOT "Driving a Roundabout, Turn by Turn" Handout

State DOT roundabout webpage

State DOT roundabout animation

State DOT "All About Roundabouts" Brochure

State DOT "How to drive the Highway 11 (Racine St.) Roundabouts" Brochure

State DOT "Using a Roundabout: Pedestrians & Bicyclists" Brochure


For questions or concerns about roundabouts please call 755-3160.

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