IES Light For Life® Virtual Symposium 2025: Outdoor Spaces
Recorded On: 12/11/2025
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Symposium Description: This one-day virtual symposium recording focused on the latest research and trends for quality outdoor lighting, hosted by the IES Outdoor Nighttime Environments Committee.
Presentations curated to cover:
- Modifications to IES lighting zone definitions and ANSI/IES RP-43
- Emerging research: ecological science, astronomical considerations, skyglow mitigation, and urban streetlight
- The critical role of lighting intensity
- Perspectives on applying the latest recommendations to exterior designs and lighting products
The Value of Outdoor Space
Outdoor space is valuable, highly valuable. For many municipalities, the development and/or protection of outdoor space has become a competitive advantage towards tourism and population growth. This includes the hours after dark when visual safety and ecological protection are at a premium. Recent updates to BSR/IES RP-43 will position you to understand how to handle the changing landscape.
Ecological Lighting Design: Common Misconceptions and Human Bias in Lighting for Outdoor Spaces
Lighting design standards reflect the needs of humans as we move through our world. Despite growing interest in outdoor lighting standards for ecological concerns, there remain many misconceptions in the lighting community about applying lighting design to ecological contexts and non-human needs. This session will provide a brief overview of current scientific knowledge on non-human perception and the limitations of applying human-centric lighting design to ecological scenarios. By focusing on what science does know about ecological lighting concerns, lighting designers can avoid unverified assumptions and human bias and make more informed ecological lighting decisions.
High Angle Light: Impacts and Issues
Everyone wants less light pollution and good visual comfort at night…let’s talk technology and the importance of the designer's discretion.
It's all about contrast - why dark skies are essential for astronomy and casual stargazing
Modern astronomy is now mostly done from remote mountaintops and is seriously compromised by man-made lighting. The observatories in Hawaii will be used as examples of sites that have been preserved with dark skies, and some of the research being done will be explained in the context of the need for the dark sky to be preserved.
The Challenge: LED Luminaire Efficacy versus Application Efficacy
It has been common practice to base “Good, Better, Best” descriptors to lighting products for energy efficiency, particularly when discussing energy incentive and rebate programs. Many decisions are made solely based on “How much of a rebate (dollars) will I receive if I use this bucket of products?” The issue with this approach is that the application of the light being generated is typically not considered for these choices. Furthermore, luminaires with the highest efficacy values often don’t meet the quality criteria for the applications for which they are chosen.
This session will include a demonstration providing a visual representation of this challenge.
LESS LIGHT: practical darkness
This session uses completed projects from the FMS studios to illustrate the evolution of the practice of lighting design over the past 25 years as our design strategies have responded to increased understanding of the effects of electric lighting at night on flora, fauna, and dark skies, and the arrival and dominance of the LED in architectural lighting.
Updated IES Lighting Zone Definitions
An overview of efforts to update and revise IES Lighting Zone definitions
Signs of change
Illuminated sign technology and the way we evaluate signs are evolving. Methods for measuring and assessing illuminated signs must also adapt to provide accurate results.
Geographic Information System (GIS) technology applied to Roadway Lighting
Street lighting design has long relied on a few general "typical layouts", often overlooking the unique spatial conditions that exist across streetscapes. This session introduces how traditional GIS and spatial analysis methods, commonly used in infrastructure planning, can improve lighting outcomes. By mapping illumination levels and overlaying land use, transportation assets, environmental constraints, and crime and crash data, cities can better align lighting with actual needs. Street lighting is multifaceted. We light for transportation safety, crime prevention, and economic development, while also addressing energy use, protected habitat and species, migratory birds, and dark skies. This session will highlight how spatial analysis can help lighting designers make more context-sensitive decisions on street lighting projects.
Watch any or all of the videos from the symposium. You must watch each video in its entirety to unlock the corresponding CEU certificate. Watch all videos to receive a total of 4 CEUs.
Rick A. Utting
Rick Utting is an independent consultant serving as a policy advisor for DarkSky International and Clanton & Associates Lighting Design and Engineering. Rick is currently Vice Chair of the IES’s Outdoor Nighttime Environment Committee. Focused on pedestrian vision and the environmental sustainability of outdoor lighting, Rick consults with advocate groups, communities, legislators, and other organizations regarding outdoor lighting best practices.
Hannah Moon
Hannah Moon holds a PhD in Zoology from the University of Hawaiʻi at Mānoa. Her research focuses on the physiology and molecular aspects of vision in birds. She has more than a decade of international field experience in avian conservation, seven years of studies related to impacts of human infrastructure on Hawaiian seabirds and has served for three years as an advisory member of the Outdoor Nighttime Environments Committee of the IES. Hannah currently works as an independent consultant in New Orleans and is open to new opportunities.
James Brigagliano
Lighting Program Manager
DarkSky
Active in the lighting community for 20 years, James brings a unique blend of technical knowledge, real-world experience, and a passion for DarkSky preservation. James champions the development of existing and new DarkSky Approved Lighting programs. He is also the current chair of the IES RP-39 task group.
James began his career in lighting working with the Planning, Design & Construction Dept. at Cornell University. In his time at Cornell James gained experience measuring and photographing built projects, collaborating with professionals on master planning, and creating site lighting standards for the campus. Dedicating himself to lighting, James continued his career at Selux Corporation in Highland NY. Here, James wrote multiple continuing education articles, developed award-winning DarkSky luminaires, and gained a strong appreciation for environmentally friendly lighting.
Being able to utilize his expertise in lighting to support environmental stewardship is extremely exciting to James. Outside of work, he loves adventuring with his family and pursuing his interests in nightscape/landscape photography, rock/ice climbing, mountain running, and ski/mountaineering.
Rodney Wardle
Vice President of Manufacturing
Young Electric Sign Company (YESCO)
Rod Wardle has more than 41 years in the sign industry. He is the Vice President of Manufacturing for Young Electric Sign Company (YESCO). Rod is an advocate for the responsible use of lighting for advertising and signage-based wayfinding.
Ari Isaak
Ari Isaak, GISP, CFLC, has more than 25 years of GIS experience and 17 years in the street and roadway lighting space. During this time, Ari has been involved in the audit, management, and conversion of approximately five million street lights across the U.S., including major projects in Chicago, Honolulu, San Francisco, Philadelphia, Boston, and many others. He is the creator of EvariLUX, a tool that generates horizontal illumination maps across a city or project area. Ari is currently building Photometrics AI, which applies photometry to determine the optimum performance of lighting on networked lighting controls.
Shirley Coyle
President
Cree Lighting Canada
Shirley Coyle is President of Cree Lighting Canada and has worked in leadership roles for several lighting manufacturers over the past 35 years. Lighting Certified since 2000, Shirley is a Past President of the Illuminating Engineering Society (IES), and is active on several IES technical committees, including the Outdoor Nighttime Environments Committee and the Roadway Lighting Committee. Shirley is also a Board member of CIE’s Canadian National Committee.
Richard Wainscoat
Richard Wainscoat has a PhD in Astronomy from the Australian National University. After working for a few years at NASA Ames Research Center in California, he moved to Hawaii in order to be able to use the large telescopes on Maunakea and Haleakala. He now leads efforts to find asteroids that may come close to, or impact Earth using the Pan-STARRS telescopes on Haleakala. He has been actively working to preserve the dark night skies over Hawaii's observatories for the last 20 years.
Charles G. Stone II
Founder
Fisher Marantz Stone
Charles joined architectural lighting designers, Jules Fisher & Paul Marantz, Inc., in 1983, and helped found FMS in 1997. From studios in New York, Seattle, and Austin, FMS has received 300 awards and completed 5000 successful projects on six continents, including Carnegie Hall, the Washington Monument, the Tribute in Light, the Hong Kong International Airport, the Portland Airport, the Academy Museum of Motion Pictures in Los Angeles, the Peninsula Hotel in Paris, 41 buildings on the Shanghai Bund, the world’s tallest building - the Burj Kalifa, and the 2nd tallest - Merdeka Tower in Kuala Lumpur. Mr. Stone is a graduate of Princeton University, a Certified Lighting Designer, LEED and NCQLP accredited, a Fellow and Past President of the International Association of Lighting Designers. He has received Lifetime Achievement Awards from the Edison Report and the ILAS (Mumbai). In 2025, Charles was named a Lighting ICON by the New York Designers Lighting Forum.
Charles’s Traveling Light lecture tour, which explores light and culture, has visited 25 countries. Mr. Stone is active in education and research as a member of the Advisory Board for the Architectural Lighting program at Oregon State University, the IESNA Lighting for Outdoor Nighttime Environment Committee, and the Lighting Detectives (Tokyo).
FIALD CLD IES LC LEED AP BD+C
Bradley D. Schlesselman
Musco Lighting
Brad is responsible for various lighting and vision research projects at Musco Lighting in Oskaloosa, Iowa. He began his lighting career as a Lighting Designer for Musco in 1998 and became Lighting Certified (LC) in 2001. During his time at Musco, he has completed lighting designs for thousands of athletic fields, ranging from recreational to professional venues.
In 2012, Brad became a Senior Research Engineer engaged with vision research on the Intrinsically Photosensitive Retinal Ganglion Cells (IPRGC)/melanopsin receptors and their role on perceived brightness. He has conducted numerous speaking engagements for the lighting industry and is currently the Chair of the Discomfort Glare in Outdoor Nighttime Environments (DGONE) Committee. He is also a member of several other IES Committees, including the Outdoor Nighttime Environments (ONE) Committee.
As senior research engineer with Musco Lighting, Brad has worked closely with DarkSky International for many years helping to establish benchmarks and best practices for exterior lighting that align with DarkSky’s purpose and goals. Brad has helped Musco’s decades-long mission of controlling and applying light in ways that significantly reduce glare, spill, and sky glow through educational sessions. He is a firm believer that the best outdoor lighting systems are designed in a way that’s equally focused on preserving darkness as on illuminating the intended area. Lighting at night, when necessary, can co-exist with protecting the enjoyment of observing the dark nighttime skies.