Had them installed on my RKC for a couple of years and am convinced they don't work. Passed deer grazing right alongsidethe road many times and they didn't even look up or seem to notice.

 

8 or 10 years ago my Dad got some for his truck. He had lived for 60 years and never hit a deer. The week after he installed them,,,BAM! I am convinced that if anything, they make the deer run. I would prefer that they stand still. I would say if you do get them,,,increase your insurance, wear all the leather that you can find and a full face helmet.