what is illegal about creating a barrier to entry to your own private property? If that barrier is perceived (like a sign that warns of toxic waters or rabid animals that keeps people out) or physical (like a simple gate or tall fence), or seen but potentially dangerous (like barbed wire on top of a fence or spike strips?)
Isn't the beware of dog sign (which works by nature of the fact that they can't see the dog but likely he is there) similar to a beware of spike strips (also unseen but probably lurking under the dirt where they would have to choose to drive over them or not)?
I don't think anyone would get injured, although possibly if they were going very fast on their dirt bike and had a flat tire something could happen, where is the legality when damage occurs to their vehicle while they were trespassing?
Actually, a "Beware Of Dog" sign, INCREASES your liability....it could imply you know your dog is vicious and if it bites someone, you failed to restrain it. You might lose your one shot at not knowing your dog would bite defense.
Electric fences are awesome....even electrified barbed wire, but they need to be prominently flagged every few feet, and can't be lethal voltage. Spike strips and other assorted booby traps would be pre-meditated assault and with wanton disregard...but sure fun to think about when people ignore your land!...lol
