Roundabouts

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WHAT IS A ROUNDABOUT?
 INFORMATIONAL VIDEOS:
 Navigating A Multi-Lane Roundabout
 Modern Roundabouts - A Safer Choice
 Mythbuster- 4 Way Stop vs. Roundabout
 How About A Roundabout?
 
 INFORMATIONAL HANDOUTS:
 AARP - Modern Roundabouts: Livability Fact Sheet
DIAGRAM OF A TYPICAL ROUNDABOUT
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Compared to standard instersections, there are fewer conflict points in a roundabout
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(Above) A traditional intersection has 32 conflict points. (Below) Modern roundabout have 16 conflict points. Accident in roundabout are typically minor due to slower speeds and indirect contact points. 
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A roundabout is a one-way circular intersection without traffic signal equipment in which traffic flows around a center island.

Unlike traffic circles from years ago, a modern roundabout provides safe and efficient traffic flow. It operates with yield control at the entry points and gives priority to vehicles within the roundabout.

WHY BUILD A ROUNDABOUT INSTEAD OF A TRAFFIC SIGNAL?

Roundabout move traffic safely and efficiently through an intersection because of:
  • Slower speeds
  • Fewer conflict points
  • Easy decision-making

Studies show that roundabouts provide:

  • 90% reduction in fatal crashes
  • 75% reduction in injury crashes
  • 30 to 40% reduction in pedestrian crashes
  • 10% reduction in bicycle crashes

Slower vehicle speeds mean:

  • Drivers have more time to judge and react
  • Easier to use for older and beginner drivers
  • Reduction in the severity of accidents
  • Pedestrians are safer

Efficient traffic flow:

  • Traffic always on the move- less delay
  • 30 to 50% increase in traffic capacity

Other benefits:

  • Reduction in pollution and fuel use
  • Less noise due to fewer stops and starts
  • No signal equipment to install and repair
  • Provides traffic calming