John Van Nostrand Dorr was already a household name in chemical engineering when he changed the world. But what truly secured his legacy was nothing academic or technical. It was a simple white line, painted on the outermost edges of roads and highways - one that has likely saved millions of lives. And you've probably never really noticed it.
Born in 1872, Dorr had been interested in geology and metallurgy ever since he was a little kid, hiking out to explore iron and copper mines and collecting any "specimens" that caught his eye. By the time he was 16 or 17, he was working at Thomas Edison's laboratory. His job title: "pioneer".
After studying chemistry at Rutgers University, he moved out West, using chemical methods to pull gold from low-grade ores, and by 1916 he was running his own eponymous company. "His inventions were applied also to sewage treatment, purifying waters around many large cities," reported the New York Times in his 1962 obituary. None of it, though, was what birthed his quest to see every road outlined in white.
For all that Dorr was a metallurgical genius, it was his wife who really gets the credit for his most far-reaching legacy. "Mr Dorr set up the Dorr Foundation in 1950 to make grants in chemistry and metallurgy," reported the New York Times. "But because his wife complained that headlight glare from approaching cars tended to force drivers off the road, he broadened the purpose to promote highway safety."
The theory was this: with no lines at the road's edge, drivers naturally tended to hug the center - fine, until another car came the other way, at which point you'd have to swerve towards the shoulder to avoid it. At night it was worse. Oncoming traffic came at you with near-blinding headlights, and no driver could focus on the center line while facing down that glare.
Dorr thought that could be fixed with one more white line, on the outside of the lane. That may sound obvious today, if only because those lines are everywhere. But he met a wall of resistance. "When I first suggested it" to the Connecticut highway commissioner, he later wrote, "it was turned down completely." There was only one way forward: he had to go to the media.
Undeterred, Dorr wrote to the Westport Town Crier newspaper. Oncoming headlights were "particularly blinding on a rainy or snowy night," he argued, and he "would gladly pay for a demonstration test of a few miles." "Dr. Dorr's suggestion," the paper declared, "is a dandy."
So began a rough-and-ready experiment: outside lines were painted along a few miles of road, and the effects monitored. "The position and driving behavior of 11,289 vehicles along this test strip demonstrated that the shoulder lines improved automobile position in the center of the lane," wrote public policy researcher Steven Schindler in the 2007 Casebook for The Foundation: A Great American Secret.
With such encouraging results the idea spread - but not far. One state hesitantly ran a trial on a stretch of parkway known for its high accident rate. In the seven months after the stripes went down in 1954, accidents there fell by 55 percent.
Highway officials, meanwhile, came up with ever-more inventive reasons to reject the idea: some said the lines were too expensive to paint; others that their lifesaving effect was overstated; one even argued that edge lines would confuse drivers into driving off the road entirely.
Time and again, though, the edge lines proved their worth. In Ohio, the state highway director told Dorr that "we have not found any locations where we believe edge-marking would yield sufficient value." Yet a later controlled, randomized experiment there found that lined highways cut casualties by more than a third.
What's more, the public loved the lines. "It has been popularly acclaimed by many motorists," reported The New York Times in 1957, "who have found the line delineating the safe edge of the road a particular help." Once drivers had the lines, they really didn't want to give them up.
It was only a matter of time before highway officials gave in. "The Public is demanding it," the chief of research of the Bureau of Public Roads wrote in a 1958 report to the Highway Research Board. "Everywhere drivers are saying: 'This is the finest thing we've ever seen.'" "As highway engineers," he advised, "we've got to stop dragging our feet."
And so they did. Less than a decade after he began his crusade, Dorr's white lines were virtually universal. His name may not be famous, but John Dorr changed the everyday world more profoundly than most, and saved countless lives in the process.