The First Trial of Cat's Eyes Road Reflectors
Percy Shaw's invention, the "cat's eyes" road reflector, was first trialled on a stretch of road near his home in Halifax, West Yorkshire, England.
Shaw noticed that drivers struggled to navigate the road at night due to a lack of proper reflective markings. This observation inspired him to develop the "cat's eyes," which were initially made from two pieces of glass set into a metal casing with a reflective surface.