The Full Story
Percy Shaw was born in Halifax in 1890, one of ten children, and left school young to fix roads for a living. By his own account, one foggy night in 1933 he was driving home from Queensbury on a dangerous stretch of road with a steep drop. The fog was so thick he could not see the tarmac. The polished tram rails he normally followed had been taken up. Then he saw two points of light. A cat by the roadside, its eyes reflecting his headlights back through the fog. He did not drive off the edge.
He started building something. Glass lenses in a flexible rubber dome set into a cast iron base. When a car drove over it, the rubber pressed down and wiped the glass clean, helped by collected rainwater. He patented it in 1934 and founded Reflecting Roadstuds Ltd in 1935 to make it. At first sales were modest. Then the war came. Britain switched off every streetlight in the country to hide from German bombers. Percy Shaw's cat's eyes became one of the few safe guides left on British roads, and mass orders followed.
A famous line calls the catseye the most brilliant invention ever produced in the interests of road safety. It is repeated everywhere, often credited to Parliament, but it has never been traced to a parliamentary record. The success was real enough. Percy Shaw became a millionaire and kept living in his house in Halifax. He removed the carpets. Kept four televisions running in the same room with the sound turned down. Every Friday his friends came round with crates of ale. He was awarded an OBE in 1965. A road mender from Halifax.
Why This Matters
Cat's eyes are on almost every road in Britain and the world. They are self-cleaning, cost nothing to run, and save lives every single night. They have barely changed in 90 years because they have not needed to. Percy Shaw is a portrait of British engineering at its most overlooked: a man with no formal engineering education and no money who looked at a problem and solved it so well that the world never needed a second solution.
Key Facts
- ⚠Correction: the video dates the fog incident to 1934 and quotes Parliament calling the catseye the most brilliant invention ever. The fog incident was 1933 (the patent followed in 1934), the cat story is Shaw's own account, the celebrated quote has never been traced to a parliamentary record, and the claim of orders at 40,000 a week could not be verified and has been removed.