http://www.switched.com/2009/12/17/useful-but-dangerous-led-traffic-lights-save-energy-hide-in-sn/ Switched Comments for Useful but Dangerous: LED Traffic Lights Save Energy, Hide in Snow http://www.switched.com/media/feedlogo.gif http://www.switched.com en-us Copyright 2012 Weblogs, Inc. The contents of this feed are available for non-commercial use only. Blogsmith http://www.blogsmith.com/http://www.switched.com/2009/12/17/useful-but-dangerous-led-traffic-lights-save-energy-hide-in-sn/http://www.switched.com/2009/12/17/useful-but-dangerous-led-traffic-lights-save-energy-hide-in-sn/Dec 20th 2009 10:34AM