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December 09, 2005
Solar-powered traffic signs: "Lintec is marketing ...
... Solar-powered traffic signs: " Lintec is marketing in Japan solar-powered traffic signs that have no electric wiring and consume no electricity. The sign stores solar energy in the daytime and automatically illuminates when it gets dark, remaining lit until dawn. IMG 0512081-1.jpg ...
Posted by dymaxion at December 9, 2005 05:26 PM