There are four of these strange, eight sided signs in my South Salt Lake neighborhood and they're placed on the corners of the 4-way intersection. I know have to mean something, maybe it means STOP, as in bring your vehicle to a complete stop before proceeding. No that can't possibly be what means.
Ugh, over the weekend my wife and I counted 5 drivers blowing through the 4-way stop on Saturday alone. Come on people!