Saxophone Prank with Traffic Cones

How do traffic lights REALLY work? 🤔🚦Traffic lights work using a combination of fixed timers and sensors that detect vehicles, pedestrians, and even bicycles. This information is sent to a central controller, the "brain" of the intersection, which then decides when to change the lights based on pre-programmed cycles and the real-time inputs it receives! #science #physics #engineering #technology | Learning with Lyrics

He Invented the Traffic Light. They Wouldn't Buy It. Meet Garrett Morgan—the Black inventor born to formerly enslaved parents who created two life-saving inventions that changed the world. In 1912, he patented the first practical gas mask (a "safety hood"), which he used heroically in 1916 to rescue trapped workers from a poison-filled tunnel beneath Lake Erie. In 1923, he invented the three-position traffic signal—the yellow light—that's now used worldwide. But here's what history buried: fire