A study of North American architects, lighting designers and engineers' attitudes towards light pollution issues, including glare, light trespass and sky glow.

by Craig DiLouie, Principal
ZING Communications, Inc.

108 pages, illustrated. PDF format. $350

2005-2006 Light Pollution Study

“Light pollution” primarily deals with three outdoor lighting issues—sky glow, light trespass and glare. Addressing light pollution has grown in significance as an industry trend due to greater awareness of the issues, LEED, changes in codes, and the proliferation of anti-light pollution laws across the country at the state and local level.

How aware are lighting designers, architects and engineers about light pollution issues? How important are various aspects of light pollution in their decision-making? Who is most influential about making outdoor lighting decisions that address light pollution? What motivates them the most to address light pollution? What strategies and product types are most popular to deal with light pollution? What is their response to outdoor lighting manufacturer product and service offerings? What kinds of laws are they encountering, and how easy are they to understand and implement? And what are the most significant roadblocks to properly addressing light pollution?

The 2005-2006 Light Pollution Study was developed to achieve two purposes. First, it is intended to help outdoor lighting manufacturers to develop a deeper understanding of designer, architect and engineer attitudes towards light pollution issues. Using this information, manufacturers may develop products, programs and approaches that reflect a deeper understanding of the market. Second, the Study is intended to help municipalities, code writers and other organizations develop practical, easy-to-understand, and easy-to-implement codes and legislation that reflect input from lighting professionals.

The 2005-2006 Light Pollution Study contains more than 100 pages of data tables, graphs, verbatims and analysis based on a survey to 2,847 North American architects, lighting designers and engineers, with a 6.9% response. The study breaks down the response by specifier group, making this three studies in one with direct comparisons and contrasts between each group.


What is the current level of awareness of light pollution issues among lighting designers, architects and engineers who specify outdoor lighting systems in North America?

How do design professionals rate the importance of major light pollution issues—sky glow, glare and light trespass?

How important are various reasons that design professionals address light pollution issues in their designs?

Which market participants are most influential in making decisions about design- and specification-related light pollution issues?

What are the most popular strategies and equipment types that lighting designers, architects and engineers employ to address light pollution issues in their outdoor projects?

How do design professionals view full cutoff fixtures as a solution?

How helpful would design professionals regard standardized labeling of light fixtures to show compliance of maximum wattage (or lumens) and shielding for different lighting zones?

How well are manufacturers doing to address this issue, in terms of products and providing education?

How hard or easy to understand and implement state and local laws designed to prevent light pollution?

Imagining an ideal light pollution law, what metrics would be easiest for lighting designers, architects and engineers to work with for popular applications?

What barriers do lighting designers, architects and engineers face when addressing light pollution issues in their outdoor lighting projects?