They would also have only red and green lights. These types of traffic lights were popular in cities like Chicago, where traffic was on the rise. The yellow light didn’t enter the scene until ...

But one time the red glass lens on a signal lamp dropped out of its socket, showing a white light, which then caused a rail collision. Traditionally red has evoked danger and green, a more calming ...

Why the traffic light colors were chosen There are a few reasons why the colors red, yellow and green were chosen for traffic lights. Red is an obvious choice. The color red means danger or to be ...