A roundabout is a type of circular intersection where entering traffic yields to circulating traffic and all traffic is slowed by appropriate geometric features. For a roundabout to operate satisfactorily, all users—drivers, pedestrians, and cyclists—must be able to enter, circulate around, and exit the roundabout in a safe and efficient manner and pedestrians must be able to safely use crosswalks.
In order to provide criteria that will adequately address the visibility of the roadway, pedestrians, and hazards through a roundabout, this guide uses a combination of horizontal illuminance for the roadway and vertical illuminance in the crosswalks.
Softcover or Secure PDF: 11 pages
Publisher: Illuminating Engineering Society (2008)
SKU: IES DG-19-08
Dimensions: 8½” x 11″