Sustainable site design strategies: Lighting pollution reduction

- [Instructor] The last sustainable site design strategy…we'll discuss is called light pollution reduction.…Light pollution is the misdirection or misuse of light,…generally resulting from exterior lighting design…that doesn't consider uplight,…light trespass to the adjacent sites,…and glare, instead of directing lighting…to what is intended to be lighted.…Good lighting design avoids three forms of light pollution,…uplight, glare, and light trespass.…Light pollution is disruptive to wildlife,…especially nocturnal species…that depend on dark skies for survival.…

It also results in a waste of energy and money…while increasing carbon emissions.…Light pollution also has a human health impact…by disrupting our sleep cycles.…Here's what you can do to reduce lighting pollution.…Specify and install well-shielded,…well-directed light fixtures.…Implement motion sensors, photocells, or time clocks…to reduce the amount of light when it's not needed.…For example, after work hours,…a portion of exterior lights can be turned off…