Roundabouts in Lincoln
What is a roundabout?
A modern roundabout is an unsignalized circular intersection with the following key design characteristics:
- Yield on entry; priority to circulating vehicles
- Pedestrian access & crossing
- Lack of parking
- Truck apron
- Landscaped central island
- Deflection of vehicle paths to reduce speed
What are the benefits?
Roundabouts are being used to improve safety, increase intersection capacity and efficiency, reduce environmental impacts, and enhance community values. Additional benefits may include lower costs over other types of intersections and greater design flexibility.
How are they being used in Lincoln?
The first modern roundabout at an intersection of two major arterial streets in Nebraska was built at 33rd and Sheridan in 2002. The intersection had been traffic signal controlled since 1980 and had a high rate of crashes using "traditional" traffic control measures. In the three years following completion of construction, total crashes dropped by 83%, with a 95% reduction in injury crashes. Not only were fewer people hurt, but the cost of property damage due to crashes was reduced by $810,000.
Since the initial success of the 33rd and Sheridan improvement, dozens of roundabouts have been installed throughout Lincoln, and more are planned in future projects.