Wildlife jump-out with plank on top, Arizona, USA. The plank is believed to discourage ungulates (elk, deer) from jumping up into the rfences road corridor. On the other hand, animals that are cqaught in the fenced road corridor can walk up to the height of the jump-out behind the plank. This effectively makes the jump-out higher for animals that want to jump up into the fenced road corridor, and lower for animals that want to leave the fenced road corridor and jump down to the safe side of the fence.