http://news.com.com/2100-1041_3-5790806.html
"The LED street lamps were installed in the central Dutch town of Ede, in what Philips--the world's biggest lighting maker--claims is a world first.

The lamps contain yellow and white LEDs, which allow for brighter or softer tones according to differences in seasons and the time of night. Until now, LEDs were used as indicators on electronic goods, bicycles and cars, but technical developments have made them so bright they can now be used for any normal lighting situation. "

"LED street lamps are twice as expensive as current street lighting with a similar design, but this is compensated for by the longer lifespan, Philips product manager Bram Lansink said."