They seldom help. Most deer, elk and moose are tall enough they would just roll over the hood. Even see it on tall 3/4 ton truck here in Texas, Sometimes if they are a bit to the side they get knocked that direction. I was always a big believer in them but after watching and thinking I realized it's the drunks that have a high percentage rate of getting us. Some animal freeze and some run. The ones that stand and wait usually jump in the last second straight up like some type of reflex. Most people do exactly the same.
If I lived in Australia I would definitely go with on. Those Roos jumping around everywhere and the type of brush they have is where those bars evolved. We always had brush guards on our farm trucks when I was a kid. But it was just for driving through head high brush sometimes or corn. There is always a small chance one could save you....but I've been shocked by lightning 2 times while getting gas. I'm not wearing a rubber hat and boots though.
) If you look at statistics then death from driving in general and drunken morons are the numbers that are scary. ))
