{"id":3813,"date":"2020-03-30T10:24:26","date_gmt":"2020-03-30T15:24:26","guid":{"rendered":"http:\/\/crossroadsled.com\/?page_id=3813"},"modified":"2024-09-12T12:44:44","modified_gmt":"2024-09-12T17:44:44","slug":"dark-sky-matters","status":"publish","type":"page","link":"https:\/\/dwdigitaldesign.com\/crossroadsled\/dark-sky-matters\/","title":{"rendered":"Dark Sky Matters"},"content":{"rendered":"<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"636\" src=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/only-in-the-darkness.jpg\" alt=\"A couple stands together, looking at the night sky with a quote from Marin Luther King, Jr. &quot;Only in the darkness can you see the stars.&quot;\" class=\"wp-image-3826\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/only-in-the-darkness.jpg 1200w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/only-in-the-darkness-300x159.jpg 300w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/only-in-the-darkness-1024x543.jpg 1024w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/only-in-the-darkness-768x407.jpg 768w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/only-in-the-darkness-600x318.jpg 600w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure><div class=\"wp-block-columns lightgreybg is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:60%\"><h2 class=\"wp-block-heading\"><strong>WHAT IS LIGHT POLLUTION?<\/strong> <\/h2>\n\n<p class=\"wp-block-paragraph\">Light pollution is the introduction of artificial light into the night sky. Street lights are the primary cause of light pollution and sky glow, obscuring the stars and creating perpetual twilight. Light pollution contributes to light trespass issues on public and private properties. Today, 80% of the US population cannot see the Milky Way. Blue wavelengths of light emitted by LED fixtures is a leading contributing factor of light pollution and sky glow.<\/p><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:40%\"><div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"849\" src=\"http:\/\/crossroadsled.com\/wp-content\/uploads\/2020\/03\/Santa-Fe-1024x849.jpg\" alt=\"The City of Santa Fe, New Mexico\" class=\"wp-image-3829\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/Santa-Fe-1024x849.jpg 1024w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/Santa-Fe-300x249.jpg 300w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/Santa-Fe-768x637.jpg 768w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/Santa-Fe-1536x1274.jpg 1536w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/Santa-Fe-2048x1699.jpg 2048w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/Santa-Fe-600x498.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div><\/div><\/div><div class=\"wp-block-columns bluebg is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><h2 class=\"wp-block-heading\">High Pressure Sodium Street Lights  <\/h2>\n\n<ul class=\"wp-block-list\"><li>High pressure sodium (HPS) street lights emit a 2200 kelvin diffused amber light <\/li>\n\n<li>Generate minimal blue light<\/li>\n\n<li>High pressure sodium fixtures are the most common street lights in use today <\/li><\/ul>\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"702\" height=\"433\" src=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/sodium_light_chart-3.png\" alt=\"\" class=\"wp-image-3851\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/sodium_light_chart-3.png 702w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/sodium_light_chart-3-300x185.png 300w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/sodium_light_chart-3-600x370.png 600w\" sizes=\"(max-width: 702px) 100vw, 702px\" \/><\/figure><\/div><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><p class=\"wp-block-paragraph\"><\/p>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"760\" src=\"http:\/\/crossroadsled.com\/wp-content\/uploads\/2020\/03\/sodium_light-1024x760.jpg\" alt=\"High pressure sodium (HPS) street light\" class=\"wp-image-3835\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/sodium_light-1024x760.jpg 1024w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/sodium_light-300x223.jpg 300w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/sodium_light-768x570.jpg 768w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/sodium_light-80x60.jpg 80w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/sodium_light-600x445.jpg 600w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/sodium_light.jpg 1456w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div><\/div><div class=\"wp-block-columns bluebg is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"827\" height=\"1024\" src=\"http:\/\/crossroadsled.com\/wp-content\/uploads\/2020\/03\/kelvin_light-827x1024.jpg\" alt=\"\" class=\"wp-image-3853\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/kelvin_light-827x1024.jpg 827w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/kelvin_light-242x300.jpg 242w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/kelvin_light-768x951.jpg 768w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/kelvin_light-600x743.jpg 600w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/kelvin_light.jpg 872w\" sizes=\"(max-width: 827px) 100vw, 827px\" \/><\/figure><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><h2 class=\"wp-block-heading\">3000 Kelvin LED Street Lights<\/h2>\n\n<ul class=\"wp-block-list\"><li>LED street lights have a more intense and directly focused beam angle, resulting in intense glare and light trespass issues <\/li>\n\n<li>White LEDs are actually blue LEDs with a phosphor coating that convert the blue light into white through a process called fluorescence<\/li>\n\n<li>Blue light radiates from the LED, significantly contributing to light pollution and sky glow <\/li><\/ul>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"631\" height=\"397\" src=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/kelvin_light_chart-2.png\" alt=\"\" class=\"wp-image-3861\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/kelvin_light_chart-2.png 631w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/kelvin_light_chart-2-300x189.png 300w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/kelvin_light_chart-2-600x377.png 600w\" sizes=\"(max-width: 631px) 100vw, 631px\" \/><\/figure><\/div><\/div><div class=\"wp-block-columns lightgreybg is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\"><h2 class=\"wp-block-heading\">LEDs vs The Night Sky<\/h2>\n\n<ul class=\"wp-block-list\"><li>Blue light is scattered in all directions by the atmosphere <\/li>\n\n<li>The blue light is partially scattered back toward the ground, producing a diffuse glow that can be seen from miles away<\/li>\n\n<li>The resultant sky glow blocks the natural light and beauty of the night sky<\/li>\n\n<li>It takes more than simply changing the LED color temperature to 2700 or 3000 kelvin to be Dark Sky compliant as these LED\u2019s produce significant amounts of harmful blue light <\/li><\/ul><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"902\" height=\"1024\" src=\"http:\/\/crossroadsled.com\/wp-content\/uploads\/2020\/03\/ledvsnightsky-902x1024.jpg\" alt=\"\" class=\"wp-image-3865\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/ledvsnightsky-902x1024.jpg 902w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/ledvsnightsky-264x300.jpg 264w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/ledvsnightsky-768x872.jpg 768w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/ledvsnightsky-600x681.jpg 600w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/ledvsnightsky.jpg 1046w\" sizes=\"(max-width: 902px) 100vw, 902px\" \/><\/figure><\/div><\/div><div class=\"wp-block-columns lightgreybg is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"825\" height=\"525\" src=\"http:\/\/crossroadsled.com\/wp-content\/uploads\/2020\/03\/ida_darkskyapproved.png\" alt=\"\" class=\"wp-image-3873\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/ida_darkskyapproved.png 825w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/ida_darkskyapproved-300x191.png 300w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/ida_darkskyapproved-768x489.png 768w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/ida_darkskyapproved-600x382.png 600w\" sizes=\"(max-width: 825px) 100vw, 825px\" \/><\/figure><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><h2 class=\"wp-block-heading\">IDA Statement on Blue Light<\/h2>\n\n<p class=\"wp-block-paragraph\"><strong>LEDs<\/strong><br>With the continued advances in LED technology, the IDA is concerned about the potential negative effects of blue rich light on the night sky, including fixtures with shielding and 3000 kelvin LEDs<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>New lighting requirements<\/strong><br>Because of this, the IDA is expected to soon reduce its color temperature recommendation to 2,700K or lower<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>IDA recommendations<\/strong><br>The IDA promotes environmentally responsible outdoor lighting projects and encourages the adoption of new technologies that utilize the lowest possible kelvin temperature LED\u2019s that will&nbsp; reduce and eliminate blue light emissions into the night sky<\/p>\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.darksky.org\/our-work\/lighting\/lighting-for-industry\/fsa\/\">Learn More<\/a><\/div><\/div><\/div><div class=\"wp-block-group blackbg\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading has-text-align-center\">Are they really Dark Sky rated?<\/h2>\n\n<p class=\"has-text-align-center wp-block-paragraph\">Although all three of these fixtures have an IDA stamp, none incorporate the required full shielding necessary for IDA compliance and will generate significant amounts of light pollution, light trespass and glare. All three 3000 kelvin fixtures radiate significant levels of blue light and will increase light pollution and sky glow.<\/p>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"636\" height=\"400\" src=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/light1.png\" alt=\"\" class=\"wp-image-3877\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/light1.png 636w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/light1-300x189.png 300w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/light1-600x377.png 600w\" sizes=\"(max-width: 636px) 100vw, 636px\" \/><\/figure><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"636\" height=\"400\" src=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/light2.png\" alt=\"\" class=\"wp-image-3878\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/light2.png 636w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/light2-300x189.png 300w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/light2-600x377.png 600w\" sizes=\"(max-width: 636px) 100vw, 636px\" \/><\/figure><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"636\" height=\"400\" src=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/light3.png\" alt=\"\" class=\"wp-image-3879\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/light3.png 636w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/light3-300x189.png 300w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/light3-600x377.png 600w\" sizes=\"(max-width: 636px) 100vw, 636px\" \/><\/figure><\/div><\/div><\/div><\/div><div class=\"wp-block-group bluebg\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading has-text-align-center\">Dark Sky rated LED fixtures<\/h2>\n\n<ul class=\"wp-block-list\"><li>Advanced Dark Sky Compliant LED street lights utilize Phosphor Converted Amber (PCA) LED\u2019s at the same 2200 kelvin temperature as HPS street lights<\/li>\n\n<li>Negligible levels of blue light, less than HPS street lights<\/li>\n\n<li>Fully shielded fixtures\u00a0that completely enclose the LED\u2019s, eliminating glare<\/li>\n\n<li>Have internally mounted and adjustable house side light shields on all fixtures that will 100% eliminate light trespass to the light pole\/curb<\/li><\/ul>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"853\" height=\"693\" src=\"http:\/\/crossroadsled.com\/wp-content\/uploads\/2020\/03\/darksky_light2-1.png\" alt=\"Astrophile fixtures before they're installed.\" class=\"wp-image-3892\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darksky_light2-1.png 853w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darksky_light2-1-300x244.png 300w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darksky_light2-1-768x624.png 768w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darksky_light2-1-600x487.png 600w\" sizes=\"(max-width: 853px) 100vw, 853px\" \/><\/figure><\/div>\n\n<p class=\"has-text-align-center wp-block-paragraph\">Crossroads LED 2200 kelvin Astrophile fixtures spectral power distribution (SPD) measurement<\/p>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"572\" height=\"354\" src=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darkskychart1-1.png\" alt=\"A graph showing very low levels of blue light from an Astrophile fixture\" class=\"wp-image-3891\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darkskychart1-1.png 572w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darkskychart1-1-300x186.png 300w\" sizes=\"(max-width: 572px) 100vw, 572px\" \/><\/figure><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"853\" height=\"693\" src=\"http:\/\/crossroadsled.com\/wp-content\/uploads\/2020\/03\/darksky_light1-1.png\" alt=\"An Astrophile fixture before it's installed.\" class=\"wp-image-3893\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darksky_light1-1.png 853w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darksky_light1-1-300x244.png 300w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darksky_light1-1-768x624.png 768w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darksky_light1-1-600x487.png 600w\" sizes=\"(max-width: 853px) 100vw, 853px\" \/><\/figure><\/div>\n\n<p class=\"has-text-align-center wp-block-paragraph\">Crossroads LED 1700 kelvin Astrophile fixtures spectral power distribution (SPD) measurement<\/p>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"572\" height=\"354\" src=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darkskychart2.png\" alt=\"\" class=\"wp-image-3886\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darkskychart2.png 572w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darkskychart2-300x186.png 300w\" sizes=\"(max-width: 572px) 100vw, 572px\" \/><\/figure><\/div><\/div><\/div><\/div><div class=\"wp-block-group lightgreybg\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"http:\/\/crossroadsled.com\/wp-content\/uploads\/2020\/03\/Downtown_Albuquerque-1024x683.jpg\" alt=\"A photo of downtown Albuquerque during sunset.\" class=\"wp-image-3900\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/Downtown_Albuquerque-1024x683.jpg 1024w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/Downtown_Albuquerque-300x200.jpg 300w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/Downtown_Albuquerque-768x512.jpg 768w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/Downtown_Albuquerque-600x400.jpg 600w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/Downtown_Albuquerque.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><h4 class=\"wp-block-heading\">Case Study<\/h4>\n\n<h2 class=\"wp-block-heading\">Albuquerque LED Street Light Conversion Program<\/h2>\n\n<p class=\"wp-block-paragraph\">In August of 2017, City officials announce a $20 million partnership with an energy service company to convert 20,000 HPS streetlights to LED technology. The City anticipated significant savings in electricity and maintenance over the LED bulb\u2019s estimated 18 year lifespan.<\/p>\n\n<p class=\"wp-block-paragraph\"> The program required the use of 3000 kelvin Dark Sky compliant LED fixtures to decrease light pollution and preserve the City of Albuquerque\u2019s night skies. In December 2018, City officials announced that all 20,000 street lights have been replaced with LED technology.&nbsp; <\/p>\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/2020\/03\/31\/albuquerque-led-street-light-conversion\/\" data-type=\"post\" data-id=\"3899\">Read the complete case study<\/a><\/p><\/div><\/div><\/div><\/div><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"532\" src=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darkskyfriendly.jpg\" alt=\"\" class=\"wp-image-3919\" srcset=\"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darkskyfriendly.jpg 1200w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darkskyfriendly-300x133.jpg 300w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darkskyfriendly-1024x454.jpg 1024w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darkskyfriendly-768x340.jpg 768w, https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-content\/uploads\/2020\/03\/darkskyfriendly-600x266.jpg 600w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure><div class=\"wp-block-group blackbg\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\"><p class=\"has-text-align-center wp-block-paragraph\">Replacing HPS street lights with 3000 kelvin LEDs will considerably&nbsp; increase both a Cities and the surrounding communities\u2019 light pollution and sky glow by at least 100%.<\/p>\n\n<p class=\"has-text-align-center wp-block-paragraph\">Cities should consider new ordinances and specifications that require LED street lights to be at the lowest possible kelvin temperature and meet Dark Sky specific performance standards.<\/p>\n\n<p class=\"has-text-align-center wp-block-paragraph\">Do not rely on internally generated test data provided by lighting manufacturers or their distributors.&nbsp; Demand independent third party testing from an accredited laboratory for all LED street lights. At a minimum, the test data should include LM-79, LM-80, ISTMT and TM21 test reports.<\/p><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>WHAT IS LIGHT POLLUTION? Light pollution is the introduction of artificial light into the night sky. Street lights are the primary cause of light pollution and sky glow, obscuring the stars and creating perpetual twilight. Light pollution contributes to light trespass issues on public and private properties. Today, 80% of the US population cannot see the Milky Way. Blue wavelengths [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"postBodyMargin":[],"postBodyPadding":[],"postBodyBackground":{"backgroundType":"classic","gradient":""},"footnotes":""},"class_list":["post-3813","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-json\/wp\/v2\/pages\/3813","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-json\/wp\/v2\/comments?post=3813"}],"version-history":[{"count":1,"href":"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-json\/wp\/v2\/pages\/3813\/revisions"}],"predecessor-version":[{"id":4629,"href":"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-json\/wp\/v2\/pages\/3813\/revisions\/4629"}],"wp:attachment":[{"href":"https:\/\/dwdigitaldesign.com\/crossroadsled\/wp-json\/wp\/v2\/media?parent=3813"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}