Tag: who invented the yellow light

Who Invented the Yellow Traffic Light? The yellow (amber) light is one of the simplest safety upgrades ever added to the roadway—and it’s saved countless fender-benders (and worse) by giving drivers a clear “heads up” before red. So who invented it? The short answer: a Detroit police officer named William Potts, who introduced the amber caution phase and helped standardize … Continue reading “Who Invented The Yellow Light?”