The Zone decided to create awareness about the 'STOP' sign! Those who drive (and claim to be diligent and respectful of the road signs) would have certainly noticed that there is a general tendency among drivers in Malta to take the 'STOP' sign as an optional thing. If you don't believe, watch this video!
The 'STOP' sign says 'stop'. It means you must stop. Again, stop! Not slow down, not hoot and keep driving, it means stop. Always!