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 alert for something occurring.

The first traffic signals were not red, yellow and green. Here's why they are now. We're talking transportation with Jim Cameron every week.

Almost all TV remote controls have red, green, yellow, and blue buttons. However, most people are unaware of what these four colored buttons do. You've probably noticed that almost every remote, ...