IES DG-19-08 PDF Download

The IES DG-19-08 standard provides recommendations for the lighting of roundabouts. The purpose of this standard is to ensure that drivers can safely and efficiently navigate roundabouts by being able to perceive the layout and operation of the intersection in a timely manner. Adequate lighting is essential for this purpose.

The standard defines light levels within the roundabout and vertical light levels at locations where pedestrians are present. It takes into account considerations such as glare, light trespass, and pole placement in order to achieve proper lighting and enhance visibility of the various traffic elements within the roundabout.