its from a road safety awareness campaign, alerting drivers that they might want to use the mirror and actually check for motorcycles in the next lane before they move their stupid unaware arse into it, there might be a motorcycle there. As usual it made no difference. I still go with the "painfully loud pipes save lives" method, when the mothertruckers blindly try to squash me i give it the clutch in, full throttle and then dump the clutch, all while giving the patented withering stare from behind the mirror tinted visor
had one dickhead years ago that didn't see me, so i calmly went about removing the mirror under the (correct) assumption that if he wasn't using it he wouldn't be needing it, he became quite peeved at the modification i'd made to his pointless little sports car and gave chase, he kept it up for about 10 miles in medium density traffic, taking far more risks and coming closer to smashing another car than me, i had to pull over a couple of times to let him catch up and then i'd go past him again just to keep his blood boiling...i got bored eventually and left him for dead