I mentioned this in another thread I started after reading the 1998 CSPC's reports on ATV's.
Basically, most rollovers are over the back, not the front. If you factor in all the variables, you will see that rollovers caused by only having one front wheel, on approved trails, ridden by responsible riders make up way less than 1% of all ATV accidents. I am not even sure any deaths can be blamed on it. It's a bunch of horsey.
I was telling my friend yesterday that I had 3- 3wheelers, and his immediate response was, "3wheelers are dangerous", so I asked him why, he did not know. The stupid cspc has programmed the general public, and have decided how we should live our lives, so much for freedom.
All vehicles are dangerous in the hands of people with no common sense.