Deer strike.

[JustPassinThru_imp]

Those deer whistles are conpletely worthless. I pretty much blast my horn repeatedly and if you have a loud pipe rev up the motor, basically making as much noise as possible. (The CB horn is nice and loud & piercing.) My experience has been they seem to run away from that, but that only works if you have adequate warning by seeing them. If they do their leaping trick, prayer instinct & experience are all you've got.
Also, SLOW DOWN AS FAST AS SAFELY POSSIBLE as soon as you see one, not to mention proceed very cautiosly when driving through wooded areas.

I suspect it's the raspiness of the horn that gets their attention. "Smooth" sounds, like a train air horn or some cars' horns...don't faze them a bit.

Ope pipes, as I said...I kinda wish I had some noise like that the other day; but then...think of how someone with a loud bike comes up on you when you're standing near the road. You hear that noise, maybe two seconds if he's traveling 60. That's really not much reaction time, even to wildlife.

Wonder if I could find an electronic relay, like a car alarm, to cycle the horn...quick blast every five seconds or so. Of course, if John Law finds me using it, I'll get a ticket...but a ticket is cheaper, wallet and body both, than a deer hit.