A private paved road ajoins one of my property lines. A neighbor has placed a speed bump on this road to protect his children from speeding vehicles. The vehicles have found that they can steer around his speed bump to avoid it by driving onto the dirt county right of way that exists between the paved surface and my fence. The neighbor has placed a wooden utility pole on the ground extending from the speed bump to my fence. If a vehicle collides with this pole would I be liable for damages/injuries caused by this utility pole? If the road is maintained by the neighbors, which it is, are we liable for the placement of the speed bump on the road?