This is my dad's explanation to me and my sisters when we were young as to why people stopped their cars at traffic lights: drivers like the sight of the red traffic lights so much that they stop their cars and look at them. They dislike looking at the green lights so much that when the light changes from red to green, they simply drive away.
A childhood belief about traffic lights

others believed things like this
- i used to believe that the green arrows on the traffic lights told you which way you had to go to get home.— Helen
- i used to believe that red yellow and green meant "ready, set, Go!" on traffic lights..— cabagona
- when i was little thought that ants changed traffic lights from green to red and vice versa.Anon
- I believed that traffic lights had police officers inside them, turning the lights on and off...— CrowHeart
- when i was about 5-8 i used to believe that oompa loompas lived in traffic lights and controlled the lights!!— ~wierd ~
- When i was little i always thought there were little men inside the traffic lights changing the light— Kiley