/learn/publications/b/blog/posts/los-angeles-replaces-aging-streetlights-with-more-efficient-leds-about-timeClinton Climate Initiative LED streetlight... Los Angeles - now the &quot;City of LED Lights&quot; (via LA Bureau of Street Lighting ) Street lighting has been around since the ancient Romans and Greeks used them for safety purposes (tripping over ob...en-USTelligent Community 12https://community.element14.com/learn/publications/b/blog/posts/los-angeles-replaces-aging-streetlights-with-more-efficient-leds-about-timeFri, 27 Sep 2013 20:45:06 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:c6535296-dbcc-42a7-a133-3c73e5298eb5DAB1<p>Hopefully they have already checked to see if the new street lights reduce light pollution for astronomers.</p><p>&nbsp;</p><p>The big issue with the older lamps was all of the wasted energy emitted during use that just filled the air with stray light.</p><p>I have not seen any studies on the light pollution aspects of LED&#39;s, but there could still be an issue if they are emitting in visible light or infrared spectrums.</p><p>&nbsp;</p><p>Still, given the cost of power, you have to wonder what they are waiting for.&nbsp; The cost to replace is probably about a year or so and the replacement cycle probably runs into years of extended life before replacement needs.</p><p>&nbsp;</p><p>DAB</p><img src="https://community.element14.com/aggbug?PostID=16553&AppID=45&AppType=Weblog&ContentType=0" width="1" height="1">