I saw this and thougth people here might be interested in it:
http://today.reuters.com/news/newsArticle.aspx?type=technologyNews&storyID=2005-07-15T122754Z_01_L15695136_RTRIDST_0_TECH-TECH-PHILIPS-STREETLAMPS-DC.XML
Here is a picture of one, bet they are using Luxeons.
http://www.refdag.nl/website/artfoto.php?fotoid=24767
Interesting that they use white and yellow LED's to change the color of the light depending on the season.
http://today.reuters.com/news/newsArticle.aspx?type=technologyNews&storyID=2005-07-15T122754Z_01_L15695136_RTRIDST_0_TECH-TECH-PHILIPS-STREETLAMPS-DC.XML
Here is a picture of one, bet they are using Luxeons.
http://www.refdag.nl/website/artfoto.php?fotoid=24767
Interesting that they use white and yellow LED's to change the color of the light depending on the season.