The image shows a warning sign attached to a wooden pole. The sign is rectangular in shape and has a yellow background with black text. The text reads "WARNING" in bold letters at the top, followed by "F-309" in smaller letters. Below the text, there is an orange label with the number "309". The pole is attached to the pole with a black cable that is coiled around it. In the background, there are buildings and a fence. The sky is overcast and the ground is covered in grass.