Have you ever looked at a traffic light and wondered, "Why are traffic lights red, yellow, and green? Is there a specific reason for this color code?" We associate red with stop, green with go, and yellow with caution, but why is that and when did it first develop?
The standard stoplight system of today first came into existence because of the system the British developed to prevent ships crashing into each other at night - this two color light system was extremely basic and simply had green for go and red for stop. The railway also developed a system of its own, which then went through trial and error before being adapted into the stoplights we see on the road today.Read on to discover why these specific colors are used and what happened during the early railroad days that caused the 'go' color to be changed permanently.