The pedestrian traffic lights have two colours:
Red Light with the figure of a Pedestrian standing still means “STOP” – DO NOT CROSS THE ROAD.
Just like you, when you stop playing when your teacher says, “Stop!”
Green Light with the figure of a walking pedestrian means “CROSS THE ROAD” with extra caution by looking both ways, as there might be a vehicle coming and could pose a danger.
Imagine this as a green carpet inviting you to cross.