"DANGEROUS" stake-sign from a truck trailer

This little fiberglass sign measures 12" square and is bolted to a chunk of 2X4 wood. It was picked up alongside a street after having fallen or bounced from the back of a truck, little placard signs similar to it are commonly used on all sorts of trucks hauling things that fit the description. The wood part of this one suggests that it was displayed by sticking it into an unused load-holding slot on a flatbed truck or trailer, other common varieties clip into a holder bracket that mounts on a cargo box or trailer door surface. (I have a few of those, too...)

It now decorates my porch by the door where I suppose it could kinda warn of a slightly different form of "DANGER" within...that of "TOO MUCH STUFF" inside...?? <LOLOL>