Regulation signs
That would be the stop sign.
that your driving into a box
An octagon-shaped traffic sign is significant because it is used exclusively for stop signs. The unique shape helps drivers quickly recognize and understand the need to come to a complete stop at that intersection.
A stop sign is shaped like an octagon.
An octagon-shaped sign typically means "stop."
Stop sign?
A yield sign is shaped like an upside-down triangle.
A Stop Sign. How do you not know this?!
If you mean a diamond on the lane, that means that that lane is for BICYCLISTS ONLY, if you mean as a shape of a sign such as a "slippery when wet" sign, that usually tells you important things. I looked it up in my "Virginia Driver's Manual" and it says a diamond shaped sign is a warning sign.
The square sign looks like a square.
a stop sign
A stop sign is shaped like a hexagon