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G'day Ricki & all,
I use a pair of $20 warning
devices But they emit an audible whistle when the vehicle is going
fast enough. They work by air being forced through a venturi, much like an
umpires whistle. Kangaroos, feeding on the side of the
road sometimes will look up & freeze.
But those off the road bound off in all
directions, including across the road.
The devices have as much effect on scaring
animals away as blowing a car's horn to encourage cattle to move off the road ie
zilch !
An earlier electronic version called the "Shoo-Roo"
allegedly emit an out of range signal and were trailed for some time by
interstate express coaches but apparently did not meet
expectations.
If anyone gets tempted to buy a pair, check it out
in the store by blowing into them. One $9 pair I tried, had no hole through them
at all !
Could it be that Eagles, Kites and Corvids feeding
on carrion on the road get their first warning of an arriving vehicle by road
vibrations ?
Regards
Bob Forsyth, Mount Isa, NW
Qld.
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