Lights Of The Signal | English Songs And Rhymes For Kids Watch 'Lights Of The Signal' - a traffic lights nursery rhyme for kids with the Dubby Dubs. Hey kids! Do you know what the colours of the traffic signal stand for? Well, in this song, Mr. Wignal teaches us the importance of the different colours of a traffic signal. Let's follow these traffic rules along with the Dubby Dubs and sing this fun song, 'Lights Of The Signal'.