Optical Illusion Improves Visibility of Highway Markers (Oct, 1939)
I’m guessing that someone’s last thought as they hurtled through the intersection right in front of a fast moving truck was “Why did someone paint ‘POTS’ on the ground?”
Optical Illusion Improves Visibility of Highway Markers
Optical illusions are now being turned to the cause of highway safety with the recent development by Frank McLaughlin, a Chicago, Ill., industrial designer, of road signs that are said to have a three-dimensional effect, although they are actually stenciled flat on the pavement. Designed according to a mathematical formula that applies to each letter of the alphabet, the sign’s property of seeming to stand up away from the street makes it visible to motorists 150 feet farther away than conventional road markers.