Hidden History: Who Really Invented the Traffic Light?

The Invention That Saves Millions of Lives

Every day, billions of people around the world encounter traffic lights. These ubiquitous devices regulate the flow of vehicles and pedestrians, preventing countless accidents. But few know the remarkable story of Garrett Morgan, the African American inventor who revolutionized traffic safety.

Garrett Morgan: A Life of Innovation

Born in 1877 in Paris, Kentucky, Garrett Morgan was the son of formerly enslaved people. With only an elementary school education, he moved to Cleveland, Ohio, as a teenager and began working as a handyman for a wealthy landowner.

Morgan's curiosity and mechanical aptitude led him to open his own sewing machine repair shop. His success allowed him to venture into other businesses and inventions.

The Three-Position Traffic Signal

In 1923, Morgan patented his three-position traffic signal. Unlike earlier two-position signals (stop and go), Morgan's design introduced a crucial third position—a warning signal that allowed vehicles to slow down before stopping.

This innovation addressed a critical safety problem. At busy intersections, cars would frequently collide because there was no warning before the light changed. Morgan's "all-stop" position gave time for intersections to clear before cross-traffic began moving.

Why This Matters

Morgan's traffic signal patent (U.S. Patent #1,475,024) laid the groundwork for modern traffic management. While traffic lights have evolved significantly, the fundamental principle of his three-position system remains in use today.

The General Electric Company recognized the value of Morgan's invention and purchased the patent for $40,000—a substantial sum in 1923.

Other Inventions

The traffic signal wasn't Morgan's only contribution:

The Safety Hood (1914) - Morgan invented a breathing device that protected wearers from smoke and gases. This "safety hood" was the precursor to the modern gas mask. In 1916, Morgan personally used his device to rescue workers trapped in a tunnel beneath Lake Erie after an explosion.

Hair Straightening Products - While attempting to solve a problem with sewing machine needles, Morgan accidentally discovered a chemical that could straighten hair. He founded the G.A. Morgan Hair Refining Company, which became highly successful.

Overcoming Racism

Morgan faced significant obstacles due to racism. At times, he had to hire white actors to demonstrate his inventions because many potential buyers wouldn't purchase from a Black inventor. Despite these challenges, his innovations succeeded on their merits.

Legacy

Garrett Morgan died in 1963, having lived to see the Civil Rights Movement begin to dismantle the segregation he had navigated throughout his life. His inventions continue to save lives daily.

Discover more hidden histories and overlooked inventors in our Facts section.