IES DG-19-08

The purpose of this document is to provide recommendationsfor the lighting of roundabouts. In the US Federal Highway Administration publication FHWA-RD-00-067, Roundabouts; An Informational Guide1 it states:

For a roundabout to operate satisfactorily, a driver must be able to enter the roundabout, move through the circulating traffic, and separate from the circulating stream in a safe and efficient manner. To accomplish this, a driver must be able to perceive the general layoutand operation of the intersection in time to make the appropriate maneuvers. Adequate lighting should therefore be provided at all roundabouts.

This document therefore defines light levels within the roundabout, and vertical light levels at locations where pedestrians are present. Other considerations are discussed including glare, light trespass, and pole placement to help achieve proper lighting and to betterdefine the traffic elements within the roundabout.

People Who Bought This Also Bought:
ANSI/IES RP-8-00 (R2005)- Roadway Lighting ANSI ApprovedANSI/IES RP-22-05- Tunnel LightingIES LM-50-99- Photometric Measurement of Roadway Lighting InstallationsIES DG-5-94- Recommended Lighting for Walkways and Class 1 BikewaysIES RP-20-98- Lighting for Parking FacilitiesIES DG-17-05- Fundamentals of Lighting for VideoconferencingIES LEM-1-05- IESNA Recommended Procedure for Determining Interior and Exterior Lighting Power AllowancesIES LEM-3-07- IESNA Guidelines for Upgrading Lighting Systems in Commercial and Institutional SpacesIES LM-31-95- Photometric Testing of Roadway Luminaires Using Incandescent Filament and High Intensity Discharge LampsIES LM-60-01 (R2007)- Life Testing of Low Pressure Sodium Lamps
View Contents (PDF)