I was tempted to get a deer whistle a few years ago after I smacked one going to Perry one morning. After an internet search I saw where the Ohio State Police had done a study with them and found that they didn't help prevent and that the study showed a slight increase in incidents with the use of the whistles.
Internet BMW Riders - Deer Whistles, they don't work!
“There is no difference between communism and socialism, except in the means of achieving the same ultimate end: communism proposes to enslave men by force, socialism—by vote. It is merely the difference between murder and suicide.” Ayn Rand