Deer are a common sight in many parts of the world, and they can cause a lot of damage to property and gardens. Deer road signs mean that there is a high probability of deer crossing the road in the area. Drivers should be extra cautious when approaching these signs and should be prepared to stop if they see a deer on the road. Be aware of your surroundings and look for deer in the woods and fields near the road. A Deer Sign Sticker.