Inventions That Changed the World
Experience groundbreaking African American inventions in stunning 3D. Rotate, explore, and discover the innovations that shaped modern life.
Drag to rotate • Scroll to zoom
1923
Three-Position Traffic Signal
by Garrett Morgan
About the Invention
Garrett Morgan invented the three-position traffic signal that included a 'yield' position between stop and go. This revolutionary safety device became the foundation for modern traffic lights used worldwide.
Discover More Black Excellence
Explore hundreds of African American inventors, heroes, and innovators who shaped our world.