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Friday, July 25, 2014

Roundabouts

Roundabout at Bailey Road and Radio Drive

A modern roundabout is an unsignalized circular intersection used to maximize safety, minimize traffic delay, and provide aesthetic benefits.

Roundabouts are currently located within the City of Woodbury: a multi-lane roundabout at Radio Drive and Bailey Road, and a single-lane roundabout at Settlers Ridge Parkway and Lake Road in the Stonemill Farms development. In addition, five single-lane roundabouts located along Hargis Parkway and one on Pioneer Drive south of Bailey Road provide access to East Ridge High School.

City considering future roundabouts
Roundabouts are a form of traffic control the city is currently considering at new and reconstructed intersections. For intersections that require more capacity than can be provided at two-way stop or all-way stop intersections, a detailed study of each intersection will be performed to determine whether a traffic signal or roundabout is most appropriate. Roundabouts are generally most effective at intersections with the following characteristics:

  • Location with high incidents of right angle or turning traffic crashes.
  • Locations with complex geometry.
  • Locations with frequent left-turn movements.
  • Locations where traffic flows from opposing directions are fairly balanced.
  • At isolated locations or outside a series of traffic signals that are spaced close together. (Placing a roundabout in the middle of a series of traffic signals would disrupt any coordinated timing that may exist.)

How to navigate a roundabout