As LED road lighting expands, concerns about collateral impacts are being expressed. The American Medical Association encourages using LEDs with correlated color temperatures of 3,000 K or less (warm white color), citing potential impacts on circadian health, glare, preference, and possible effects on other species. These proposals have sparked lively discussion about proper guides for road lighting. The speakers will offer varied perspectives on specifying road lighting that meets safety concerns while minimizing negative consequences.
Concerns over the Health Effects of Lighting
Maya Babu, Mayo ClinicShow Abstract
The presenter will discuss the data in the published literature regarding lighting and its neurocognitive and physiologic effects.
Update from the National Toxicology Program's Workshop on Electric Light-Related Exposures
Windy Boyd, National Institute of Environmental Health SciencesShow Abstract
A workshop was held at the National Institute of Environmental Health Sciences on March 10-11, 2016 to help inform the literature based health evaluations of cancer and non-cancer health outcomes related to electric lighting by the National Toxicology Program. This talk will provide a brief overview of the workshop activities along with current progress and future activities.
Management of Outdoor Lighting to Reduce Impacts on Wildlife
Fraser Shilling, University of California, DavisShow Abstract
Kimberly Andrews, University of Georgia
This presentation will describe some impacts of electric lighting on wildlife and options for mitigating those impacts.
Beyond Illuminance and CCT: How Do We Measure the Health Impacts of Roadway Lighting?
Mark S. Rea, Rensselaer Polytechnic Institute (RPI)Show Abstract
The most important reason to install roadway lighting is to help drivers reduce collisions with other cars, bicycles and pedestrians. These intended safety benefits may, however, have unintended negative consequences, such as creating sky glow in regions where astronomical observations are important. Recently the AMA expressed concerns about potential negative effects of LED roadway lighting on human health. These concerns are extremely important, but roadway lighting metrics like photopic illuminance and CCT are of no value for characterizing health impacts and therefore of no value for addressing these concerns. The AMA report raised health concerns about three phenomena, blue light hazard (BLH), circadian disruption and nocturnal melatonin suppression, and glare. There is sufficient literature and proper metrics available to assess the risks associated with LED roadway lighting as it might affect human health. When properly characterized, one must conclude that LED roadway lighting as typically applied and experienced represents little risk for BLH, circadian disruption and melatonin suppression, and glare.