Ever wondered why red, yellow, and green are the go-to colors for traffic signals? 🚦 It all started with railroads, where red’s long wavelength made it the easiest color to see from far away, becoming the universal stop signal. Originally, railroads used white for 'GO,' but it caused confusion, so green took its place. Yellow, the second most visible color, became the ‘caution’ signal. Learn the fascinating history behind our everyday stop signs and traffic lights, and how color choice impacts safety on the roads!
