- A Misleading Example of Outdoor Lighting
- discusses the use of the Ferrari of Denver auto dealership as an example of quality outdoor retail lighting - even though it fails to meet the IESNA requirements (in RP-20-98) for parking lot lighting!
- Recurring Errors in Ordinances: Site Uniformity and Property Line Limitations
- discusses the problems that misunderstood and misapplied elements in ordinances can produce - even repeatedly in some documents like the current proposals in Boulder, Castle Rock and Arapahoe County.
- Roadway Lighting Research
- discusses the findings from research into Unit Power Density (UPD) and Unit Uplight Density (UUD), published in four papers by David Keith in the Journal of the IESNA from 2000 through 2003.
- There is More to Lighting Quality Than What Meets the Eye
- presents the issues involved in outdoor lighting quality, recognizing that the visual appearance and performance of a lighting system are only part of the complete story.
- Uniformity Ratios in Ordinances
- discusses the way such ratios are defined and implemented in lighting ordiances, along with problems that occur when the implications of uniformity ratios are not undestood.
- What Blue Skies Tell Us About Light Pollution
- is a introduction to the issues of skyglow and particularly evaluation of relative contributions by different light sources.
- Why MH Systems Cost More Than HPS Systems
- discusses the relative costs - in monetary and environmental terms - of choosing Metal Halide or High Pressure Sodium sources for outdoor lighting.
- Xenon Headlights
- are a nuisance (or worse!) for many drivers and this discussion includes review of the relevant standards and reasons why these headlights are such a pain in the eye.
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- Learning from Roadway Lighting Research
- is the Powerpoint presentation (1,115 kB) made in October 2002 for a leading manufacturer's luminaire design staff.
- Legislation, Ordinances and Energy Codes: the Future for Outdoor Lighting
- - an outline of the the presentation made to the IEEE 2003 Regional Conference in Denver, CO in March. The Powerpoint presentation (255 kB) is available here.
- IESNA Street and Area Lighting Committee 2001
- conference included this Powerpoint presentation about research into Unit Power Density (UPD), with special emphasis on the potential reduction of uplight.
- Sources, Surfaces and Scatter
- is the Powerpoint presentation made to the International Dark-sky Association 2003 Annual Conference in Tuscon, AZ in March The abstract is available here.
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- Roadway Unit Uplight Density (UUD) Calculation Examples
- includes information about calculating UUD with references and examples.
- Scientific Method in Research
- is the topic of this paper by Professor Gifford, part of a discussion on Full Spectrum Lighting.
- Sources, Surfaces and Atmospheric Scatter: The Rayleigh Scatter Index
- is the paper submitted to the International Dark-sky Association 2003 Annual Conference in Tuscon, AZ in March. The abstract is here.
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- 2005 Update Residential & Nonresidential Energy Efficiency Building Standards
- has been developed by the California Energy Commission, based on the Eley Outdoor Lighting Report and the PIER Outdoor Lighting Baseline Assessment. Proposed measures are outlined in this presentation.
- Colorado Jurisdictions
- which have been posting lighting standards or ordinances on the web are linked to the IESNA's Rocky Mountain Section's website.
- Eley Outdoor Lighting Report
- is part of the technical basis for the California Energy Commission's proposed outdoor lighting standards.
- Full Spectrum Lighting
- is discussed in this website, including Professor Gifford's paper on scientific method.
- PIER Outdoor Lighting Baseline Assessment
- is part of the the technical basis for the California Energy Commission's proposed outdoor lighting standards.
- Additional ALI links can be found here
- and corrections or contributions are welcome, please send to David Keith
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For more information, or to send along comments, suggestions or contributions, please contact David Keith by email at keithd@resodance.com
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