Durable, digitally-printed signs ideal for tourism, way-finding and airports ST. PAUL, Minn.--(BUSINESS WIRE)-- 3M introduces 3M Custom Traffic Sign Faces, a new offering of image-enhancing, ...
PITTSBURGH--(BUSINESS WIRE)--PPG (NYSE:PPG) today announced the introduction of PPG ENVIROCRON™ LUM coating, which is the industry’s first commercial retroreflective powder coating. The patent-pending ...
A thin film that reflects light in intriguing ways could be used to make road signs that shine brightly and change color at night. The technology could help call attention to important traffic ...
The usual way of detecting objects of varying shapes, heights, or positions has been through the use of an array of single-beam photoelectric sensors or a thru-beam light grid: a photoelectric array ...
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