Heaps of shows use this as a motif, don't they. I remember when I was first getting into anime, wondering if traffic lights were really like that, and then when I finally managed to go to Japan I got to hear a couple, although it was something like 1% of the total number of traffic lights I crossed at...
Also, isn't it interesting that the Japanese call the green light blue? I mean even when I was over there, it still looked green to me. ;-)
There's a page on WIkipedia about that too, turns out heaps of languages lack the colour green. Japanese has at least one word for green though, which makes it all the more baffling to me.