American invention-John Dorr's line of paint on the road and on highways in the 1950's. It took Dorr eight years from 152 to 1960 to get this simple invention of putting white paint lines on highways and roads in the 51 states starting with New Jersey, New York and Connecticut. Each step of the way showing that it would lead to fewer accidents. Dorr did this in his older years when he was approaching eighty years and when he was not a good driver. The simple idea was finally accepted by highway authorties in the US, and then applied all over the world, saving countless lives. Making roads safer when speeds were much higher in the modern cars of the period after 1980 and 2000.