SPLINK! Now we can all remember the Green Code.
Wonderful video of old and scary British public information films. I have to admit I think some of the first traffic safety ones are really effective pieces of communication (not "SPLINK!" - quite possibly the most useless and non-intuitive mnemonic ever). And many of them are just plain fright-mongering unnecessary silliness. "I am the spirit of dark and lonely water"? C'mon.
I actually remember seeing the one with the electricity substation as a child and being scared witless. I can't imagine where, though. This must have been in the late 80s/early 90s. Maybe on Super Channel or Sky during early morning cartoons, or something.