The Traffic Light is a character that briefly appears in Don't Hug Me I'm Scared 6, when Red Guy is experimenting with the machine. He was supposed to teach the puppets about crossing the road.
He looks a the standard traffic light, with a grey border, black cover, red yellow and green lights, and thick black eyebrows. There are two eye at the top corners of his face. His mouth is the yellow light.
"Green is for go, but red is for not go. You could be crushed by a bus..."
- He is presumably voiced by the same person as Sammy the Spade.
- It was most likely intentional that we only see his face, because making a body for a traffic light would be pretty hard.