road signs

Independence Day ramblings on road signs, sunglasses, rain, and materials

By Eileen De Guire / July 5, 2013

   Next time you are driving in the rain, think about the engineering that ensures road signs and road markings are visible. Or just wear your sunglasses. Credit: 3M; You Tube. Top image: New (left) and old highway signs in Canada. You might see it for yourself if you drive to MS&T in Montreal in…

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