This Simple White Line Is America’s Greatest Unsung Innovation

The Wall Street Journal ^ | July 3, 2026 9:00 pm ET | Ben Cohe

[E. Pluribus Unum]

You know about the lightbulb and the iPhone. This is the unknown story of another ingenious creation that changed a nation.

Over the past 250 years, America has produced the world’s most valuable inventions. 

The lightbulb. The internet. The telephone and the iPhone. Since the founding of the United States, we have built airplanes, refrigerators and Costco. We dreamed up the microchip and we gave the world chocolate-chip cookies. 

But the greatest American innovation that you won’t ever find on a list of America’s innovations might just be one that you see every day. 

It’s an unsung idea that changed a nation and spread all over the world—and it was driven by one guy.

In the 1950s, around the time Jonas Salk cracked the polio vaccine, a metallurgist named John V. N. Dorr became the champion of a different lifesaver: a white line on the right side of the road.

For years, Dorr told anyone who would listen—and everyone who wouldn’t—about his simple way of making highways safer. A line on the side of the road, he argued, would give drivers somewhere to aim their eyes at night other than oncoming headlights. It was both cheap and incredibly effective, which made it a brilliant investment. Over time, his revolutionary stripe of paint would reach billions of people and guide drivers across the planet.

To this day, you depend on it without knowing anything about it.

“I’ve never found anybody that knew about it,” said Barbara McMillan, Dorr’s great granddaughter. 

It was also unknown to me until I wrote about another ingenious creation...

---

TOPICS: History
KEYWORDS:

[Steely Tom]

Ayn Rand said America’s greatest invention was the expression “to make money.” She explained that in every other country, money was something you “got,” or “took.” Only in America was money treated as something that was created. It’s not a zero-sum game.

[FamiliarFace]

Car lights are so bright now, that white line is critical.

[John Milner]

When I first started driving it was difficult to judge lane location. I may be more vulnerable to the effects of oncoming headlights. The white line on the right side was just becoming a thing.

I definitely remember thinking how great it was when it was on the road I was using versus the ones without it.

[Southside_Chicago_Republican]

Having spent many a night out in the boondocks on some dark highway, I salute John V. N. Dorr.

[bankwalker]

They saved my life one night on a curvy mountain highway. I was blinded by an instantaneous blizzard. The only thing I could see was my headlights shining on the white line by looking down and ahead about 10 or 20 feet or so. It lasted about 3 minutes but it seemed like hours. I was surprised that I was alive when it ended.

[Jim Noble]

I just got yellow polarized lenses that fit over my everyday glasses and make it possible to drive at night on dark country roads with no white line.

$40

If you are having trouble at night with ultra-bright oncoming headlights, check it out.

[21twelve]

I miss the old hood ornaments some times!

[lee martell]

Reflective white paint is probably used.
The paywall stopped my reading for now.

[E. Pluribus Unum]

The paywall stopped my reading for now.

Follows the instructions at the top of my homepage: https://freerepublic.com/~epluribusunum/

[lee martell]

Thanks, E. Pluribus!

[A strike]

This article is true as is your point.
The idiot (bought off) NationalHighwayTrafficSafetyAdministration rule allowing Sun bright headlights kinda negates that white line..

[Merrick]

Edward N. Hines, decades earlier, came up with the idea of the line down the middle of the road to keep passing cars from hitting each other, day or night.

I grew up on the edge of Hines Park (now in the middle of Rashida Tlaib’s district). It sickens me to think what’s happenee to the area that was *correctly* called the Arsenal of Democracy in the 40s. That term morphed over time, but that was the original usage.

Henry Ford built Hydra-matic and the Willow Run Airport next to it in 1941 to build B-24s. The plant floor had a natural 2% grade and B-24s rolled slowly under their own weight from one end of the plant to the other. They rolled out of the plant door onto the tarmac of Willow Run, were fueled up, and took off for service.

At peak operation through much of the war a new B-24 took once an hour, 24/7.

After the war GM took the plant over to manufacture power trains, and until the mid-90s it was the largest plant operating under one roof in the world.

[FamiliarFace]

We have those glasses now. They are very helpful! Still, I appreciate the white lines.

[FamiliarFace]

I can manage with most cars, but trucks! Ughh!

I do my best to not need to drive at night much these days.

[central_va]

It also helps when you are a little buzzed.

[A strike]

Right, but those SUN bright headlights are Really effd up !

[E. Pluribus Unum]

At peak operation through much of the war a new B-24 took once an hour, 24/7.

That's incredible.

One way or the other, Germany was doomed.

[Dr. Sivana]

This is one area where the Euro-weenies (E-Code) got it right. I installed some Hella E-Codes in my 1966 Dodge Dart, and they were great! Plenty bright, but lighting up the road and the right side of the road to read signs. For that reason, the lenses are NOT reversible, but assigned a side.

From Co-Pilot:

E‑code (ECE) pattern
Sharp, asymmetric cutoff

Strong right‑side “kick‑up” for illuminating road signs

More forward reach with less stray glare

Designed for driver visibility first, with controlled glare to others

Regulated under UN ECE R112 / R98 / R149

FMVSS 108 (U.S.) pattern
Softer cutoff

More symmetrical beam

More foreground light

Less pronounced right‑side kick‑up

Designed around glare avoidance first, sometimes at the cost of reach

ECE beams are generally considered more precise and more effective, especially in rural or dark conditions.

[GOPJ]

Thanks for sharing - great story.