Once the sun sets, commuting by bike or skateboard becomes a risky game. The newest gear for night riders is a stylish shirt with retroreflective stripes sewn directly into the fabric, increasing ...

BUFFALO, N.Y. — A thin film that reflects light in intriguing ways could be used to make road signs that shine brightly and change color at night, according to a study published on Aug. 9 in Science ...

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 ...

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 ...

The options when specifying sensors for long-range object detection or positioning usually boil down to two alternatives: optical sensors using either infrared or visible-red light and ultrasonic.

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 ...