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Western Pennsylvania municipalities to get 'Green Light-Go' funding for traffic signal improvements
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green street lights (well, turquoise maybe?) | oops, I think… | Flickr
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Irvine light synchronization keeps you moving - Irvine Standard
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Green light signals clean energy at 10 Downing Street | National Grid Group
Lighting-Gallery.net - Street Lights/Color Corrected LED "Yellow/Green" Streetlight In Hawaii County, HI
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Green Light Your Commute With America's Unsecured Traffic Lights | Hackaday
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